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Prosthetic MC

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Quiz on Prosthetic MC, created by Devin Schlueter on 22/08/2017.
Devin Schlueter
Test por Devin Schlueter, actualizado hace más de 1 año
Devin Schlueter
Creado por Devin Schlueter hace más de 6 años
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Resumen del Recurso

Pregunta 1

Pregunta
The Ertl procedure is known as an osteomyoplastic amputation reconstruction that performs a bone bridge between what:
Respuesta
  • Tibia bridged with the fibula
  • Distal end of the radius and ulna
  • Distal end of femur bridged with the tibia
  • Humerus bridged with the ulna

Pregunta 2

Pregunta
A below knee amputee is seen in your clinic for a follow up appointment and states he feels anterior/distal discomfort in his prosthetic socket. Choose all correct answer(s) to address this problem:
Respuesta
  • Extend the prosthetic socket
  • Flex the prosthetic socket
  • Add pretibial pads to the prosthetic socket
  • Lower the posterior socket brim

Pregunta 3

Pregunta
A below the knee amputee is seen in your clinic for a follow up appointment and states he has posterior knee or hamstring discomfort. Choose all correct answer(s) to address this problem:
Respuesta
  • lower the posterior medial brim on the prosthetic socket
  • Extend the prosthetic socket
  • Flex the prosthetic socket
  • Align prosthetic foot more posterior in relation to the prosthetic socket

Pregunta 4

Pregunta
Which level(s) of amputation may lead to an equinus gait deformity:
Respuesta
  • Lisfranc amputation
  • Chopart amputation
  • Symes amputation
  • Transmetatarsal amputation

Pregunta 5

Pregunta
A below knee amputee presents in clinic wearing a PTB style endoskeletal prosthesis with general knee pain and distal end pressure. The patient doffs her prosthesis and liner, upon examination of her residual limb you note redness on the distal tibia and inferior aspect of the patella bone. What would be the most logical clinical action(s) you could take at this point in addressing this problem:
Respuesta
  • Recommend the patient be evaluated for a new liner that will provide better cushioning to her residual limb
  • Flex the prosthetic socket while concurrently plantar flexing the prosthetic foot
  • Add a gastroc pad to prosthetic socket
  • Add a 1 ply prosthetic sock over liner

Pregunta 6

Pregunta
Myodesis can be described as:
Respuesta
  • A condition associated with calcification of muscle fibers
  • The suturing and permanent attachment of a muscle to a bone
  • The suturing or permanent attachment of a muscle to another muscle
  • A muscle going through atrophy

Pregunta 7

Pregunta
Which of the following is not part of a Symes amputation procedure:
Respuesta
  • Removal of the malleoli "distal aspect"
  • Placement of thick heel pad
  • Amputation through the articulation of the ankle
  • Transmetatarsal amputation

Pregunta 8

Pregunta
Myoplasty can be described as:
Respuesta
  • A condition associated with the loss of sarcomeres
  • The suturing and permanent attachment of a muscle to a bone
  • The suturing or permanent attachment of a muscle to another muscle
  • A muscle experiencing hypertrophy

Pregunta 9

Pregunta
What are two advantages in the list below of myodesis over myoplasty with regards to amputations:
Respuesta
  • Decreased rate of infection related revisions
  • Decreased rate of muscular atrophy
  • Decreased rate of antagonistic muscular imbalances
  • Provides a bulbous distal residual limb for self suspending applications in TT and TF cases

Pregunta 10

Pregunta
During normal heel strike, the forward hip is how flexed:
Respuesta
  • neutral
  • 10 deg flexed
  • 25 deg flexed
  • 40 deg flexed

Pregunta 11

Pregunta
Which style of muscular tissue management in an TH amputation would be of greatest advantage to a myoelectric prosthesis candidate:
Respuesta
  • Myodesis
  • Myoplasty

Pregunta 12

Pregunta
A TF patient is seen in clinic that exhibits lateral/proximal loss of contact in stance. Upon prosthetic fit examination it is noted the lateral wall is superior to the greater trochanter, the anterior wall contours to the adductor longus tendon, the posterior socket does not encompass the ischial tuberosity, the medial wall is located 65mm inferior to the perineum. What do you attribute to the cause of this deviation:
Respuesta
  • The posterior wall does not have ischial containment
  • The lateral wall is located too proximal for an ischial containment socket
  • The patient is causing the deviation from antalgic gait secondary to adductor longus tendon socket pressure
  • The medial wall is located too far inferior to the perineum

Pregunta 13

Pregunta
With a Krukenberg procedure what muscle is the driver of the pincer grip:
Respuesta
  • Supinator
  • Pronator teres
  • Brachioradialis
  • Flexor carpi radialis

Pregunta 14

Pregunta
What would be a good quality(s) to look for in a prosthetic foot for a TT amputee who is a K2 designated household ambulator that utilizes his prosthesis efficiently during the day but fatigues in the evening and buckles at the knee secondary to quadriceps weakness:
Respuesta
  • Foot that progresses rapidly into plantar flexion during loading response
  • Foot that progresses slowly into plantar flexion during loading response
  • Heel should have a relatively firm durometer
  • Heel should have a relatively soft durometer

Pregunta 15

Pregunta
Today in clinic a TT patient is seen presenting with a traditional exoskeletal PTB prosthesis with a SACH foot. Patient states that she feels like the prosthesis is throwing her knee forward as soon as the heel firmly contacts the ground. She has worn this prosthesis comfortably for two years until one month ago. What should be the first clinical action you should take at this time in the appointment:
Respuesta
  • Plantar flex the prosthetic foot
  • Dorsiflex the prosthetic foot
  • Check to see if the patient switched to a shoe with a higher heel height compared to what she used to wear
  • Check to see if the patient switched to a shoe with a lower heel height compared to what she used to wear

Pregunta 16

Pregunta
The Krukenburg procedure is used at times in developing countries where expensive prosthesis are not attainable. What other patient population(s) would this be potentially used for:
Respuesta
  • Blind patients with bilateral below elbow amputations
  • Unilateral above elbow amputee
  • A patient concerned with the cosmetic appearance
  • Failed prosthetic use for bilateral below elbow amputations

Pregunta 17

Pregunta
A TR patient is seen in your clinic. The patient is inquiring as to which terminal device would be best for picking up a small coin from a table. Which device would you recommend:
Respuesta
  • 555
  • #7
  • 5XA
  • A mechanical prosthetic hand

Pregunta 18

Pregunta
What are simple option(s) for increasing the ease of pre-positioning the prosthetic elbow in flexion, for a TH amputee utilizing a body powered prosthesis who lacks glenohumeral flexion strength and biscapular abduction strength but can operate a elbow lock:
Respuesta
  • Have the forearm lift tab located distally/anterior
  • Have forearm lift tab moved proximal/anterior
  • Move proximal base plate and retainer on humeral section posterior
  • Check the level of resistance in the cable housing

Pregunta 19

Pregunta
What bony landmark is utilized for a weight bearing prosthesis in a hip disarticulation:
Respuesta
  • Pubic rami
  • Greater trochanter
  • Ischial tuberosity
  • Iliac crest

Pregunta 20

Pregunta
What is an option for pre positioning the prosthetic elbow in flexion, for a TH amputee utilizing a triple control body powered prosthesis who lacks glenohumeral flexion strength and biscapular abduction strength but can operate an elbow lock:
Respuesta
  • Have the forearm lift tab located posterior/ proximal
  • Have forearm lift tab moved proximal
  • Change triple control to dual control, switch split housing to single housing, utilize ballistic motion for forearm lift
  • Move NW ring laterally towards the prosthetic side

Pregunta 21

Pregunta
Why is choosing a SACH foot with a firm heel durometer not advised for TT patients with poor prosthetic side knee stability:
Respuesta
  • It will increase knee stability
  • It will decrease knee stability
  • It will increase shock absorption at heel strike
  • It will not provide enough keel resistance

Pregunta 22

Pregunta
You are doing a gait assessment with your patient that has a below knee prosthesis. You notice that there is lateral trunk bending at mid stance to the prosthetic side. Choose the choice that would NOT be a potential cause of this gait deviation:
Respuesta
  • Prosthesis too short
  • Residual limb pain
  • Prosthesis too long
  • Weak quadriceps

Pregunta 23

Pregunta
A TF patient is seen in your clinic. It is noted that as he ambulates with a circumducted gait. Select ALL possible causes:
Respuesta
  • Prosthesis height is longer than his sound side ischial tuberosity to floor measurement
  • Prosthetic suspension is not adequate
  • The user does not have adequate hip flexor strength
  • Prosthetic foot is plantar flexed excessively

Pregunta 24

Pregunta
A TF patient is seen in your clinic. In stance, the prosthetic foot "smears" externally as she simultaneously abducts her prosthesis whereby advancing forward in the sagittal plane. She complains of low back pain as well. What is a prosthetic cause:
Respuesta
  • Prosthetic keel too short
  • Prosthetic knee has too little resistance to flexion
  • Not enough flexion is built into the socket
  • Prosthetic socket is excessively flexed

Pregunta 25

Pregunta
A patient with an above knee amputation has a prosthesis. During gait analysis you find that she has knee instability while standing and you see knee buckling with any weight shift. You suspect the cause of the instability is:
Respuesta
  • Prosthetic knee set too far posterior to the TKA line
  • Tight extension aid
  • Prosthetic knee set too far anterior to the TKA line
  • Weak hip flexors

Pregunta 26

Pregunta
TT prosthetic sockets that are excessively extended cause excessive pressure in what areas:
Respuesta
  • anterior/proximal
  • anterior/distal
  • posterior/distal
  • posterior/proximal

Pregunta 27

Pregunta
T/F, Outsetting the prosthetic foot on a TT prosthesis increases socket pressure medial/distal and lateral/proximal:
Respuesta
  • True
  • False

Pregunta 28

Pregunta
A forequarter amputation removes what structures:
Respuesta
  • Femur and half of pelvis
  • Femur and acetabulum
  • Arm, clavicle, and scapula
  • Arm and scapula

Pregunta 29

Pregunta
A TT patient is seen in clinic. Upon examining gait you notice a mild extension moment at the knee in stance phase. What could be the cause? Note: alignment is proper:
Respuesta
  • Prosthetic keel too short
  • Prosthetic heel is too firm
  • Prosthetic Keel is too soft
  • Prosthetic heel is too soft

Pregunta 30

Pregunta
When choosing if a prosthetic patient is a gel liner candidate, which of the following option(s) would assist you in this decision:
Respuesta
  • General hygiene
  • Hand dexterity
  • K-level
  • allergies

Pregunta 31

Pregunta
In a transmetatarsal amputation you would expect to see what gait deviation:
Respuesta
  • Absent push off
  • Absent heel strike
  • Foot drop due to loss of dorsiflexion
  • Loss of supination during gait

Pregunta 32

Pregunta
Dorsiflexing the prosthetic foot is synonymous with __________________:
Respuesta
  • Flexing the prosthetic socket
  • Extending the prosthetic socket
  • Switching to a shoe with a lower heel height
  • Switching to a shoe with a wider heel

Pregunta 33

Pregunta
Why is it necessary to utilize a Berkeley alignable componentry prior to final fabrication of an exoskeletal prosthesis:
Respuesta
  • This will allow alignment changes in the final prosthesis
  • This will allow you to align the prosthesis properly as exoskeletal prostheses cannot be re-aligned
  • This will make the prosthesis more cosmetic
  • None of the above

Pregunta 34

Pregunta
What muscle group would you expect to be the weakest in an above knee amputee:
Respuesta
  • Hip flexors
  • Hip abductors
  • Hip extensors
  • Hip adductors

Pregunta 35

Pregunta
When flexing an AK socket to accommodate a flexion contracture what concurrent alignment adjustment should also be made:
Respuesta
  • Dorsiflex the prosthetic foot
  • Plantarflex the prosthetic foot
  • Move the prosthetic knee anterior
  • Move the prosthetic knee posterior

Pregunta 36

Pregunta
An AK patient is seen in clinic. When ambulating the patient complains of knee instability. What alignment change could possibly assist in regaining knee stability:
Respuesta
  • Flex the prosthetic socket
  • Move the prosthetic knee anterior relative to the socket
  • Move the prosthetic knee posterior relative to the socket
  • move the prosthetic foot posterior relative to the prosthetic knee and socket

Pregunta 37

Pregunta
With a knee disarticulation amputee what is a cosmetic concern:
Respuesta
  • Knee extends too far out when sitting or kneeling
  • Leg length discrepancy
  • The non amputated side extends too far past surgical knee side
  • Knee too bulky

Pregunta 38

Pregunta
An AK patient is seen in clinic. When ambulating the patient complains of knee instability. What alignment change could possibly assist in regaining knee stability:
Respuesta
  • Extend the prosthetic socket
  • Move the prosthetic knee anterior relative to the socket
  • Shorten the overall height of prosthesis
  • Move prosthetic socket posterior in relation to the prosthetic knee

Pregunta 39

Pregunta
When making an angular change utilizing endoskeletal componentry it is necessary to:
Respuesta
  • Loosen the bolt opposite the direction of desired angulation and tighten the opposing bolt on the side of desired angulation
  • Loosen the bolt on the side of desired angulation and tighten the opposing bolt opposite the side of desired angulation

Pregunta 40

Pregunta
Choose all that apply to the benefit of a knee disarticulation over an above knee amputation with prosthetic fit:
Respuesta
  • Socket rotational control
  • Natural weight bearing surface
  • Muscular balance equalized with abductors and adductors
  • Larger surface area for prosthetic socket

Pregunta 41

Pregunta
When removing endoskeletal prosthetic componentry for adjustment, how do you save your original alignment:
Respuesta
  • Completely back out two opposing bolts
  • Completely back out three adjacent bolts
  • Completely back out two adjacent bolts
  • Completely back out all bolts

Pregunta 42

Pregunta
In general polycentric prosthetic knees are considered inherently stable. Why is this:
Respuesta
  • Polycentric knees have multiple linkages which increases resistance to flexion
  • Polycentric knees have a theoretical knee center which is located posterior and superior
  • Polycentric knees are difficult to bend manually and under body weight the resistance increases making them even more difficult to bend
  • Polycentric knees utilize fluid friction which resist fast motions such as knee buckling

Pregunta 43

Pregunta
Which of the following is not part of the Scarpa's triangle:
Respuesta
  • Rectus femoris
  • Inguinal ligament
  • Sartorius
  • Adductor longus

Pregunta 44

Pregunta
Choose all answers that are considered benefits of polycentric knees:
Respuesta
  • They relatively shorten in swing phase of AK prosthetic gait
  • They provide increased cosmesis when sitting
  • They are inherently stable
  • They have less moving parts when compared to other prosthetic knee designs

Pregunta 45

Pregunta
T/F, In a TT amputation when trying to increase the energy return of a dynamic response foot it may be necessary to increase plantarflexion:
Respuesta
  • True
  • False

Pregunta 46

Pregunta
The gait cycle is composed of what:
Respuesta
  • Heel strike on one side followed by heel strike by that same foot
  • Heel strike to push off
  • Heel strike on one side followed with heel strike on the other side
  • Push off on one side followed by push off on the opposite side

Pregunta 47

Pregunta
A TH patient is seen in clinic. The patient is utilizing a body powered prosthesis with a Hosmer mechanical elbow and complains that he can operate it throughout its full range of motion but it requires too much effort. What could you do to remedy this:
Respuesta
  • Dial the Automatic forearm balance mechanism located proximal posterior on the forearm shell
  • Install a spring lift assist
  • Lengthen the forearm section 10mm
  • Switch the terminal device from a 5XA hook to a #7 hook

Pregunta 48

Pregunta
What is a simple option for pre positioning the prosthetic elbow in flexion, for a TH amputee utilizing a body powered prosthesis who lacks glenohumeral flexion strength and biscapular abduction strength but can operate an elbow lock:
Respuesta
  • Have the forearm lift tab located proximal and anterior
  • Have forearm lift tab moved proximal and anterior
  • Move the proximal base plate and retainer on humeral section anterior
  • Move proximal base plate and retainer on humeral section posterior

Pregunta 49

Pregunta
During many amputations the surgeon will perform a myoplasty What does this consist of:
Respuesta
  • Surgical attachment of muscle to muscle
  • Surgical attachment of the muscle to the bone
  • Bone bridge between two bones, artificial joint ossification
  • Surgical replacement of a joint due to osteoarthritis

Pregunta 50

Pregunta
T/F, When fabricating a TR figure of eight harness it is necessary to incorporate elastic materials in the control strap:
Respuesta
  • True
  • False

Pregunta 51

Pregunta
T/F, When fabricating a TR figure of eight harness the inverted Y-strap should be located in the delto-pectoral groove:
Respuesta
  • True
  • False

Pregunta 52

Pregunta
What muscle is responsible for scapular elevation:
Respuesta
  • Trapezius muscle
  • Deltoid
  • Pecotralis major
  • Rotator cuff

Pregunta 53

Pregunta
A TF client is seen in clinic, upon doffing the suction socket you notice a red, wart like formation, and cracked skin distally. Choose the name of this condition AND its cause:
Respuesta
  • Verrucous hyperplasia
  • Ackerman's Tumor
  • Excessive distal pressure within the prosthetic socket
  • Incomplete seating of residual limb in prosthetic socket

Pregunta 54

Pregunta
A TH patient is seen in clinic. The patient is utilizing a body powered prosthesis and is wondering which terminal device would be best suited for holding a broom handle:
Respuesta
  • 5XA
  • #7
  • Mechanical prosthetic hand
  • 555

Pregunta 55

Pregunta
With a hip disarticulation prosthesis, what is used for suspension:
Respuesta
  • Ischial tuberosity
  • Iliac crest
  • Iliac crest of the intact side
  • Sacrum

Pregunta 56

Pregunta
When fitting a figure of 8 harness with a NW ring on a TR patient, why is it advantageous to locate the NW slightly toward the sound side and at the level of C7:
Respuesta
  • It will increase the comfort of the user
  • It will position the control cable optimally
  • It will position the inverted Y-strap in the delto-pectoral groove
  • None of the above

Pregunta 57

Pregunta
When recommending an ischial containment TF socket what are some of the biomechanical goals that accompany this design:
Respuesta
  • The ischial seat provides a weight bearing surface
  • By containing the ischium we can decrease distal lateral discomfort in weight bearing
  • By containing the ischium we can decrease proximal medial irritation
  • By containing the ischium we can decrease proximal anterior irritation

Pregunta 58

Pregunta
With the upper extremity, supination and pronation occur at what joint:
Respuesta
  • Distal radioulnar
  • Radiocarpal
  • Proximal radioulnar
  • A and C

Pregunta 59

Pregunta
A TF patient is seen in clinic. Upon socket fit evaluation the ischial-tuberosity is not located on the seat but further down in the socket. What adjustment could you attempt to remedy this:
Respuesta
  • Add a prosthetic sock
  • Drop the ischial seat 1cm distally
  • Add pad adjacent to scarpas triangle
  • Add a proximal posterior pad inferior to the ischial seat

Pregunta 60

Pregunta
Standard bench alignment for a TT prosthesis with a SACH foot in the coronal plane is:
Respuesta
  • 0-12mm outset
  • 0-12mm posterior
  • 0-12mm anterior
  • 0-12mm inset

Pregunta 61

Pregunta
With a below elbow amputation all of these muscles would be transected except:
Respuesta
  • Flexor carpi radialis
  • Supraspinatus
  • Brachioradialis
  • Pronator quadratus

Pregunta 62

Pregunta
A TT patient is seen in clinic. The patient has been utilizing a TT prosthesis successfully for 10 years but the patient has a grade 1 osteochondral defect "OCD" to his medial femoral condyle that is painful in weight bearing . What alignment change could you incorporate assist in the clients discomfort:
Respuesta
  • Outset the foot 3mm
  • Inset the foot 3mm
  • Dorsiflex the foot
  • Plantarflex the foot

Pregunta 63

Pregunta
Many prosthetic knees require the toe to be loaded and un-weighted in order to transition from stance features to swing features. Why would recommending two knees that function in this way to a bilateral TF amputee be contraindicated:
Respuesta
  • The patient would have difficulty moving from sit to stand only
  • The patient would have difficulty during double support instances in prosthetic gait
  • The patient would be unable to sit
  • The patient would have shortened step length

Pregunta 64

Pregunta
Which muscle is the primary forearm supinator:
Respuesta
  • Biceps brachii
  • Brachioradialis
  • Brachialis
  • Coracobrachialis

Pregunta 65

Pregunta
In reference to TT prosthetics excessive adduction of the prosthetic pylon would cause what at midstance in gait:
Respuesta
  • Genu varum
  • Genu valgum
  • Genu flexion
  • Genu extension

Pregunta 66

Pregunta
One of the characteristics of the TT total surface bearing socket is:
Respuesta
  • One of the characteristics of the TT total surface bearing socket is:
  • Emphasizing pressure equalization across all residual limb surfaces
  • Emphasizing pressure distribution on the tibia fibula interosseus membrane to prevent residual limb scissoring
  • Emphasizing pressure adjacent to the bony anatomy

Pregunta 67

Pregunta
With a knee disarticulation what adductor muscle is transected:
Respuesta
  • Adductor magnus
  • Adductor longus
  • Gracilis
  • Adductor brevis

Pregunta 68

Pregunta
When evaluating a new trans-metatarsal amputee, what deformity of the foot and ankle complex is typical without tendon transfers:
Respuesta
  • Pes plano valgus
  • Forefoot adductus
  • Equino varus
  • Club Foot

Pregunta 69

Pregunta
The most accurate description of a hydraulic single axis knee is:
Respuesta
  • A prosthetic knee that utilizes pneumatic friction resistance to modify TF prosthetic swing
  • A prosthetic knee that utilizes mechanical friction resistance to modify TF prosthetic swing
  • A prosthetic knee that utilizes variable Elastoplast resistance to modify TF prosthetic swing
  • A prosthetic knee that utilizes fluid resistance to modify TF prosthetic swing

Pregunta 70

Pregunta
All of the following muscles make up the pes anserinus except:
Respuesta
  • Sartorius
  • Gracilis
  • Semitendinosus
  • Semimembranosus

Pregunta 71

Pregunta
When evaluating fluid TF prosthetic knees, which type of resistance is most adversely effected by cold environmental temperature changes:
Respuesta
  • Hydraulic
  • Pneumatic
  • Mechanical
  • Constant friction

Pregunta 72

Pregunta
In TF prosthetic alignment the relationship between the posterior socket shelf and the lateral wall is referred to as:
Respuesta
  • Q-angle
  • TKA alignment
  • Sagittal flexion alignment
  • Adduction angle

Pregunta 73

Pregunta
In determining the correct length of the prosthesis what bony landmark is NOT used:
Respuesta
  • Greater trochanter
  • Iliac crest
  • Anterior superior iliac spine
  • Posterior superior iliac crest

Pregunta 74

Pregunta
A TT patient is seen in clinic. At heel strike the SACH prosthetic foot rotates externally. What is one cause of this gait deviation:
Respuesta
  • The prosthetic heel durometer is too firm
  • The prosthetic heel durometer is too soft
  • The prosthetic keel is too firm
  • The prosthetic keel is too soft

Pregunta 75

Pregunta
A force of 2 lbs. is exerted on a 1.5 foot lever arm. What amount of force must be exerted on a 2 foot lever arm to balance the system:
Respuesta
  • 3 lbs
  • 6 lbs
  • 1.5 lbs
  • 12 lbs

Pregunta 76

Pregunta
The biceps femoris causes what motion at the hip and knee respectively:
Respuesta
  • Hip extension, knee extension
  • Hip extension, knee flexion
  • Hip flexion, knee extension
  • Hip flexion, knee flexion

Pregunta 77

Pregunta
A TF client is seen in clinic, a medial whip is noted in prosthetic gait. What adjustment would be appropriate to normalize swing phase alignment:
Respuesta
  • Externally rotate the prosthetic knee
  • Internally rotate the prosthetic knee
  • Internally rotate the prosthetic foot
  • Externally rotate the prosthetic foot

Pregunta 78

Pregunta
A TF client is seen in clinic, a lateral whip is noted in prosthetic gait. What adjustment would be appropriate to normalize swing phase alignment:
Respuesta
  • Externally rotate the prosthetic knee
  • Internally rotate the prosthetic knee
  • Internally rotate the prosthetic foot
  • Externally rotate the prosthetic foot

Pregunta 79

Pregunta
During normal gait you see the pelvis drop during mid stance. What muscle weakness could cause this:
Respuesta
  • Piriformis
  • Gluteus minimus
  • Gluteus medius
  • Iliopsoas

Pregunta 80

Pregunta
When a prosthetic foot inset is increased, socket pressures will become more apparent:
Respuesta
  • Lateral/Distal & Medial/Proximal
  • Lateral/Proximal & Medial/Distal
  • Medial/Distal & Medial/Proximal
  • Lateral/Distal & Lateral/Proximal

Pregunta 81

Pregunta
What is the maximum amount of knee flexion contracture that could be fit with a traditional TT PTB socket:
Respuesta
  • 10*
  • 15*
  • 25*
  • 35*

Pregunta 82

Pregunta
Which muscle of the quadriceps femoris group will steady the hip joint and help iliopsoas to flex the thigh:
Respuesta
  • Rectus femoris
  • Vastus lateralis
  • Vastus medialis
  • Vastus intermedius

Pregunta 83

Pregunta
When evaluating the mechanics of a prosthetic foot, it could be said that the resistance of the prosthetic keel is acting like which muscular group and what type of muscular contraction:
Respuesta
  • Ankle dorsiflexors & Eccentric contraction
  • Ankle dorsiflexors & Concentric contraction
  • Ankle plantarflexors & Concentric contraction
  • Ankle plantarflexors & Eccentric contraction

Pregunta 84

Pregunta
When aligning the prosthetic socket posterior in relation to the prosthetic foot, forces present in the socket will increase where:
Respuesta
  • Anterior/Proximal & Posterior/distal
  • Proximal/Medial & Distal/Lateral
  • Posterior/Proximal & Anterior/Distal
  • Proximal/Lateral & Distal/Medial

Pregunta 85

Pregunta
T/F: When fabricating a below the knee prosthesis for a 4 year old patient it may be necessary to make a socket that includes multiple removable volume layers “onion skin lamination”:
Respuesta
  • True
  • False

Pregunta 86

Pregunta
A TT patient is seen in clinic. When evaluating gait you notice a Trendelenburg sign on the prosthetic side during midstance. What muscle group would you expect to show low MMT scores on the prosthetic side:
Respuesta
  • Gluteus Maximus
  • Adductor Magnus
  • Vastus lateralis
  • Gluteus Medius

Pregunta 87

Pregunta
For prosthetic patients utilizing a cane in rehabilitation, why is it recommended that the cane be held in the hand opposite the side of involvement? Choose ALL correct answers:
Respuesta
  • To give tripod base for support
  • To facilitate natural arm swing
  • To facilitate normal prosthetic step length
  • To encourage knee stability and confidence

Pregunta 88

Pregunta
All are bony landmarks that are easily palpable in the lower limb except:
Respuesta
  • Lateral malleolus
  • Tibial tuberosity
  • Lesser trochanter
  • Ischial tuberosity

Pregunta 89

Pregunta
A TF client is seen in clinic, if the patient is utilizing suction suspension you can best differentiate the socket pressures as ________in stance phase and_________in swing phase:
Respuesta
  • Less, More
  • Negative, Positive
  • Dynamic, Static
  • Positive, Negative

Pregunta 90

Pregunta
An elbow disarticulation patient is seen in clinic for a prosthesis replacement. What type of articulation at the elbow would be indicated:
Respuesta
  • Hosmer friction elbow
  • Residual limb activated locking hinge
  • Outside locking hinge
  • Ergo arm

Pregunta 91

Pregunta
T/F:When fabricating a prosthetic socket in general it is necessary to have all “like” fibers directly adjacent to aid in strength:
Respuesta
  • True
  • False

Pregunta 92

Pregunta
When deciding to add a cross back strap to a figure of eight harness. Which material would be best to fabricate the cross back strap with:
Respuesta
  • Elastic strapping
  • Inelastic strapping
  • Leather strapping
  • Cotton webbing

Pregunta 93

Pregunta
Why are flexible elbow hinges recommended for longer TR amputees:
Respuesta
  • Allows better pre-positioning
  • Durability
  • Improved residual limb comfort
  • Allows patient to maintain natural pronation/supination

Pregunta 94

Pregunta
Partial foot amputees often present with a lack of controlled third rocker late in stance. What options can assist with this other than a partial foot insert with toe filler:
Respuesta
  • Rigid sole shoe
  • Rocker addition to shoe sole
  • Carbon insert
  • OTS carbon AFO

Pregunta 95

Pregunta
When recommending a prostheses for a bilateral TR patient what style of suspension would you not recommend:
Respuesta
  • Northwestern self suspending sockets
  • Custom silicone suction suspension sockets
  • Munster self suspending sockets
  • Pin lock suspension sockets

Pregunta 96

Pregunta
When fabricating a TH prosthesis it is important to add pre-flexion to the prosthetic elbow, why is this:
Respuesta
  • To ensure full ROM will be available in the prosthetic elbow
  • To decrease force necessary to initiate elbow flexion
  • To maintain a natural hang angle
  • To decrease premature wear on the elbow lock notches

Pregunta 97

Pregunta
Transverse tarsal joints allow inversion and eversion of the foot. Choose the other joint(s) that allow inversion and eversion:
Respuesta
  • Talocrural joint
  • Subtalar and talocalcaneonavicular
  • Superior and inferior tibiofibular joints
  • All of the above

Pregunta 98

Pregunta
With respect to TF quadrilateral socket measurements, which measurement would the following calculations be used for? (Measure the ischial level circumference and divide it by three, then subtract 6mm):
Respuesta
  • Anterior/Posterior measurement
  • Lateral A/P measurement
  • Medial A/P measurement
  • Medial/Lateral measurement

Pregunta 99

Pregunta
A TR patient needing the ability to vary grip force on small delicate objects would benefit from which terminal device:
Respuesta
  • Voluntary closing prosthetic hook
  • Voluntary closing prosthetic hand
  • Voluntary opening prosthetic hand
  • Voluntary opening prosthetic hook

Pregunta 100

Pregunta
Injury to the superior gluteal nerve will result in what gait deviation:
Respuesta
  • Absent push off
  • Absent heel strike
  • Circumducted gait
  • Trendelenburg gait

Pregunta 101

Pregunta
A force of 9lbs is applied at the harness in a TR prosthesis, in order to maintain the minimum acceptable efficiency of the cable/cable housing, how much force must be needed in order to open the prosthetic hook:
Respuesta
  • 10lbs
  • 5.7lbs
  • 6.3lbs
  • 7lbs

Pregunta 102

Pregunta
When modifying a TF Quadrilateral plaster mold, if you are trying to increase the amount of adduction on the mold what must you do to maintain a level posterior shelf:
Respuesta
  • Apply plaster laterally
  • Apply plaster medially
  • Shave plaster off medially
  • Shave plaster off laterally

Pregunta 103

Pregunta
The talus does not articulate with the:
Respuesta
  • Cuboid
  • Tibia
  • Navicular
  • Fibula

Pregunta 104

Pregunta
When fabricating TF socket with a hip joint, the hip joint should be located where in relation to the greater trochanter:
Respuesta
  • 12mm inferior & 25.4mm posterior
  • 10mm inferior & 20mm anterior
  • 12mm superior & 25.4mm posterior
  • 12mm anterior & 25.4mm superior

Pregunta 105

Pregunta
In TF applications, when inadequate socket flexion is incorporated into the prosthesis what will the patient be unable to do without a gait deviation:
Respuesta
  • Stand with decreased lumbar lordosis
  • Sit with prosthetic knee and sound side knees level in the coronal plane
  • Have symmetric step lengths
  • Fully extend the prosthetic knee

Pregunta 106

Pregunta
The tibial nerve innervates muscles to the_____portion of the leg, while the deep fibular nerve innervates muscles on the _____ portion of the leg:
Respuesta
  • posterior, anterior
  • anterior, posterior
  • anterior, lateral
  • posterior, lateral

Pregunta 107

Pregunta
A TT patient is seen in clinic. The patient has been utilizing a TT prosthesis without problems for years. The patient has PVD and has been experiencing ischemic pain within his prosthetic socket in what seems to be his gastroc muscles. What should be the most logical plan of action:
Respuesta
  • Decrease pressure on the medial tibial flare
  • Decrease pressure posterior and adjacent to the popliteal artery
  • Recommend the patient be seen by a vascular specialist
  • Flex the prosthetic socket

Pregunta 108

Pregunta
T/F, With regards to initial post operative prostheses and rigid dressings, removing the device is indicated if the patient is running a temperature because it is a hallmark sign of infection:
Respuesta
  • True
  • False

Pregunta 109

Pregunta
You place a shrinker on a below knee amputee patient 3 weeks post op and notice that he keeps a pillow under his knee. What joint(s) would you expect a contracture if this persists:
Respuesta
  • Knee flexion contracture
  • Knee flexion and hip flexion contracture
  • Hip flexion and hip adductor contracture
  • Knee extensor and hip flexor contracture

Pregunta 110

Pregunta
T/F, When performing plaster mold modifications for a lateral stabilization bar in a TT PTB style socket, it is imperative that it does not extend too superior so as to avoid the common peroneal nerve:
Respuesta
  • True
  • False

Pregunta 111

Pregunta
T/F, A pull sock is often used to donn a TF suction suspension to draw tissue into the socket and to facilitate hydrostatic loading:
Respuesta
  • True
  • False

Pregunta 112

Pregunta
If the sciatic nerve is severed at the level of the ischial tuberosity, muscle function will NOT be impaired at the:
Respuesta
  • Knee joint
  • Ankle joint
  • Hip joint
  • Subtalor joint

Pregunta 113

Pregunta
T/F, A silesian belt is used to increase coronal plane stability in TF prosthesis applications:
Respuesta
  • True
  • False

Pregunta 114

Pregunta
At heel strike the knee joint is at ____while the ankle joint is at_____:
Respuesta
  • At neutral/full extension, 90 degrees/neutral
  • 10 deg flexed, 5 deg plantarflexed
  • Neutral, 10 degrees dorsiflexion
  • Neutral, 5 degrees dorsiflexion

Pregunta 115

Pregunta
In normal gait, maximum knee flexion reaches approximately:
Respuesta
  • 30-35 degrees
  • 35-40 degrees
  • 45-50 degrees
  • 60-65 degrees

Pregunta 116

Pregunta
T/F: The duration of double support varies inversely with the speed of walking and in running double support is absent:
Respuesta
  • True
  • False

Pregunta 117

Pregunta
The stance phase of gait makes up what percent of the gait cycle during ordinary walking speeds:
Respuesta
  • 40%
  • 60%
  • 80%
  • 20%

Pregunta 118

Pregunta
Your patient has a transtibial amputation and was just fitted with a PTB socket. During your session with the patient for initial fitting, you have him walk in the parallel bars. After which you inspect the skin of the residual limb. You would not expect redness in what area(s):
Respuesta
  • Distal residual limb
  • Anterior tibia and tibial crest
  • Fibular head and cut end of the fibula
  • Tibial tuberosity and patellar bone

Pregunta 119

Pregunta
When external rotation of the prosthetic foot is needed the toe lever or keel of the foot is relatively:
Respuesta
  • Lengthened
  • Shortened
  • Softened
  • Hardened

Pregunta 120

Pregunta
T/F: Unilateral BK amputees should be instructed to ascend stairs with the prostheses leading first and to descend stairs with the sound limb leading first:
Respuesta
  • True
  • False

Pregunta 121

Pregunta
During swing phase of the gait cycle what muscles are active to achieve dorsiflexion:
Respuesta
  • Anterior tibialis, extensor hallucis longus, extensor digitorum longus
  • Anterior tibialis, peronous brevis, extensor digitorum longus
  • Anterior tibialis, gastroc soleus, extensor hallucis longus
  • Anterior tibialis, extensor hallucis longus, tibialis posterior

Pregunta 122

Pregunta
The sciatic nerve innervates all these muscles except:
Respuesta
  • Semitendinosis
  • Biceps femoris
  • Semimembranosis
  • Gluteus medius

Pregunta 123

Pregunta
You are seeing a patient with diagnosis of peripheral vascular disease. What is the common artery that you can palpate to assess blood flow:
Respuesta
  • Dorsalis pedis
  • Ulnar artery
  • Femoral artery
  • Radial artery

Pregunta 124

Pregunta
What is the primary function of brachioradialis:
Respuesta
  • Elbow flexion
  • Elbow flexion and forearm pronation
  • Elbow flexion and wrist extension
  • Elbow flexion and wrist flexion

Pregunta 125

Pregunta
You have a patient that presents for evaluation for an above knee prosthesis. You notice he has a forward flexed posture. What positive muscle length test would you expect to see associated with this posture:
Respuesta
  • Ober test
  • Thomas test
  • Hip extensor tightness
  • Plantar flexion tightness

Pregunta 126

Pregunta
Possible causes for knee instability at initial contact in the TF prosthesis include
Respuesta
  • Heel cushion too firm
  • Knee set too far anterior
  • Insufficient socket flexion
  • Patient has weak hip extensors

Pregunta 127

Pregunta
The primary indication for use of Silesian belt is rotational control of the prosthesis
Respuesta
  • True
  • False

Pregunta 128

Pregunta
How would you correct an abrupt knee flexion moment at loading response
Respuesta
  • Increase socket flexion
  • Increase plantarflexion bumper
  • Move foot anterior
  • All of the above

Pregunta 129

Pregunta
If the prosthetic foot is positioned too far posterior in relation to the socket:
Respuesta
  • An excessive knee flexion moment will occur at LR
  • An insufficient knee extension moment will occur at late midstance
  • An insufficient knee flexion moment will occur at LR

Pregunta 130

Pregunta
Which of the following are muscles of the anterior leg
Respuesta
  • Tibialis Anterior
  • Extensor Digitorum Longus
  • Extensor Hallicus Longus
  • Extensor Digitorum Brevis
  • Extensor Hallicus Brevis
  • Peroneus Tertius

Pregunta 131

Pregunta
What functions do muscles of the anterior leg provide?
Respuesta
  • Inversion
  • Eversion
  • Dorsiflexion
  • Plantarflexion

Pregunta 132

Pregunta
What functions do the muscles of the posterior leg provide?
Respuesta
  • Plantarflexion
  • Knee flexion
  • Dorsiflexion
  • Eversion
  • Inversion

Pregunta 133

Pregunta
The iliofemoral ligament limits excessive flexion of the hip joint
Respuesta
  • True
  • False

Pregunta 134

Pregunta
Which nerve innervates the muscles of the lateral leg
Respuesta
  • Deep Peroneal
  • Superficial Peroneal
  • Tibial
  • Plantar
  • Sural

Pregunta 135

Pregunta
Which of the following are adductors
Respuesta
  • Pectineus
  • Sartorius
  • Gracilis

Pregunta 136

Pregunta
Which nerve innervates the muscles of the anterior leg
Respuesta
  • Superficial peroneal
  • Deep peroneal
  • Plantar
  • Sural

Pregunta 137

Pregunta
The function of the ACL is to prevent the posterior motion of the tibia with respect to the femur
Respuesta
  • True
  • False

Pregunta 138

Pregunta
The semimembranosus, semitendinosus, and biceps femoris are innervated by what nerve and supplied by what artery?
Respuesta
  • Femoral
  • Sciatic
  • Obturator
  • Profunda Femoris
  • Femoral artery
  • Obturator artery

Pregunta 139

Pregunta
What nerve innervates the muscles of the posterior leg?
Respuesta
  • Femoral
  • Tibial
  • Sciatic
  • Deep Peroneal

Pregunta 140

Pregunta
The muscles of the lateral leg provide what function?
Respuesta
  • Eversion
  • Inversion
  • Supination
  • Plantarflexion

Pregunta 141

Pregunta
The femoral nerve innervates which of the following:
Respuesta
  • Vastus intermedius
  • Rectus femoris
  • Vastus lateralis
  • Gracilis

Pregunta 142

Pregunta
What muscles make up the quadriceps group?
Respuesta
  • Vastus Lateralis
  • Vastus Intermedius
  • Vastus Medialis
  • Biceps Femoris
  • Rectus Femoris

Pregunta 143

Pregunta
The obturator nerve innervates which of the following:
Respuesta
  • Hip Extensors
  • Adductors
  • Abductors
  • Hip Flexors

Pregunta 144

Pregunta
Which of the following are muscles of the posterior leg?
Respuesta
  • Tibialis posterior
  • Popliteus
  • Soleus
  • Gastrocnemius

Pregunta 145

Pregunta
Muscles of the lateral leg include:
Respuesta
  • Peroneus tertius
  • Peroneus brevis
  • Peroneus longus
  • Extensor hallicus longus
  • Extensor digitorum longus

Pregunta 146

Pregunta
Which nerve supplies the extensor digitorum longus and brevis?
Respuesta
  • Tibial nerve
  • Plantar Nerve
  • Superficial Peroneal
  • Deep Peroneal
  • Sciatic

Pregunta 147

Pregunta
What is the primary action and innervation of the Gracilis?
Respuesta
  • Hip abduction
  • Hip flexion
  • Hip Adduction
  • Hip external rotation
  • Femoral nerve
  • Obturator nerve
  • Sciatic Nerve

Pregunta 148

Pregunta
At midstance ground reaction line is as follows:
Respuesta
  • Anterior ankle
  • Posterior ankle
  • Anterior knee
  • Posterior knee
  • Anterior hip
  • Posterior hip

Pregunta 149

Pregunta
Muscle activity at initial contact
Respuesta
  • Hip Flexors
  • Hip Extensors
  • Knee Flexors
  • Knee Extensors
  • Dorsiflexors
  • Plantarflexors

Pregunta 150

Pregunta
The knee is slightly flexed at initial contact.
Respuesta
  • True
  • False

Pregunta 151

Pregunta
Which of the following is a tarsal-metatarsal disarticulation?
Respuesta
  • Transmetatarsal
  • Chopart
  • Boyd
  • Lisfranc

Pregunta 152

Pregunta
If the prosthetic foot is too far inset in relation to the socket, the weight line will pass too far medial to the foot resulting in an excessive genu varum moment at midstance.
Respuesta
  • True
  • False

Pregunta 153

Pregunta
Excessive socket adduction results in:
Respuesta
  • Medial leaning pylon
  • Lateral leaning pylon
  • Wide-based gait
  • Walking on medial border of the foot
  • Walking on lateral border of the foot

Pregunta 154

Pregunta
Inital coronal bench alignment for PTB socket has the foot outset 1/2" relative to socket midline at MTP.
Respuesta
  • True
  • False

Pregunta 155

Pregunta
At mid-stance, a properly aligned prosthesis will increase pressures at proximal __________ socket with corresponding load on the distal ________.
Respuesta
  • lateral/medial
  • Medial/lateral

Pregunta 156

Pregunta
When prosthetic foot is aligned too far posterior in relation to the socket:
Respuesta
  • Excessive knee flexion moment at LR
  • Insufficient knee extension moment at late midstance
  • Insufficient knee flexion moment at LR
  • Excessive knee extension moment at late midstance

Pregunta 157

Pregunta
Causes for a fully extended knee at initial contact include
Respuesta
  • Insufficient pre-flexion of the socket
  • Foot too anterior
  • Foot too posterior
  • Foot too dorsiflexed

Pregunta 158

Pregunta
Which of the following muscles originate on the fibular head?
Respuesta
  • Gastrocnemius
  • Soleus
  • Plantaris
  • Peroneus longus
  • Peroneus brevis
  • Tibialis anterior
  • Extensor digitorum longus

Pregunta 159

Pregunta
The proximal trimlines for a PTBSCSP socket should terminate 65 mm proximal to MTP level.
Respuesta
  • True
  • False

Pregunta 160

Pregunta
Which muscles are transected in a partial foot amputation that normally counteract the tendency to drift into equinovarus position?
Respuesta
  • Flexor Digitorum Longus
  • Pernoeus Brevis
  • Extensor Digitorum Longus
  • Tibialis Anterior
  • Flexor Hallicus longus
  • Peroneus Tertius

Pregunta 161

Pregunta
What are possible causes of medial brim pressure in the quad socket?
Respuesta
  • Excessive sock ply
  • Insufficient sock ply
  • Medial wall too high
  • Corner too snug
  • A/P too tight
  • A/P too loose
  • M/L too tight
  • M/L too loose

Pregunta 162

Pregunta
Which of the following may lead to a circumducted gait?
Respuesta
  • Prosthesis is too long
  • Prosthesis has too much alignment stability
  • A/P Dimension too large
  • Extension assist is too strong

Pregunta 163

Pregunta
Which muscles retain their full power in a supracondylar amputation?
Respuesta
  • Adductor Magnus
  • Adductor Brevis
  • Adductor Longus
  • Gracilis

Pregunta 164

Pregunta
The dynamic keel of an energy storing foot substitutes in part for the:
Respuesta
  • Biceps femoris
  • Extensor Hallicus brevis
  • Gastrocnemius
  • Tibialis Anterior

Pregunta 165

Pregunta
You notice the ischial tuberosity is positioned medial and anterior of desired location in the socket. Possible reasons may be:
Respuesta
  • ML too loose
  • ML too tight
  • AP too large
  • AP too small

Pregunta 166

Pregunta
Pain in the Scarpa's Triangle may be due to compresison of which nerve:
Respuesta
  • Obturator
  • Femoral
  • Sciatic
  • Common Peroneal
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