Quiz
Prosthetic MC
Questions in this quiz (166)
1The Ertl procedure is known as an osteomyoplastic amputation reconstruction that
performs a bone bridge between what:- ATibia bridged with the fibula
- BDistal end of the radius and ulna
- CDistal end of femur bridged with the tibia
- DHumerus bridged with the ulna
2A 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:- AExtend the prosthetic socket
- BFlex the prosthetic socket
- CAdd pretibial pads to the prosthetic socket
- DLower the posterior socket brim
3A 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:- Alower the posterior medial brim on the prosthetic socket
- BExtend the prosthetic socket
- CFlex the prosthetic socket
- DAlign prosthetic foot more posterior in relation to the prosthetic socket
4Which level(s) of amputation may lead to an equinus gait deformity:
- ALisfranc amputation
- BChopart amputation
- CSymes amputation
- DTransmetatarsal amputation
5A 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:- ARecommend the patient be evaluated for a new liner that will provide better
cushioning to her residual limb - BFlex the prosthetic socket while concurrently plantar flexing the prosthetic foot
- CAdd a gastroc pad to prosthetic socket
- DAdd a 1 ply prosthetic sock over liner
- ARecommend the patient be evaluated for a new liner that will provide better
6Myodesis can be described as:
- AA condition associated with calcification of muscle fibers
- BThe suturing and permanent attachment of a muscle to a bone
- CThe suturing or permanent attachment of a muscle to another muscle
- DA muscle going through atrophy
7Which of the following is not part of a Symes amputation procedure:
- ARemoval of the malleoli "distal aspect"
- BPlacement of thick heel pad
- CAmputation through the articulation of the ankle
- DTransmetatarsal amputation
8Myoplasty can be described as:
- AA condition associated with the loss of sarcomeres
- BThe suturing and permanent attachment of a muscle to a bone
- CThe suturing or permanent attachment of a muscle to another muscle
- DA muscle experiencing hypertrophy
9What are two advantages in the list below of myodesis over myoplasty with regards to
amputations:- ADecreased rate of infection related revisions
- BDecreased rate of muscular atrophy
- CDecreased rate of antagonistic muscular imbalances
- DProvides a bulbous distal residual limb for self suspending applications in TT and
TF cases
10During normal heel strike, the forward hip is how flexed:
- Aneutral
- B10 deg flexed
- C25 deg flexed
- D40 deg flexed
11Which style of muscular tissue management in an TH amputation would be of greatest
advantage to a myoelectric prosthesis candidate:- AMyodesis
- BMyoplasty
12A 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:- AThe posterior wall does not have ischial containment
- BThe lateral wall is located too proximal for an ischial containment socket
- CThe patient is causing the deviation from antalgic gait secondary to adductor longus
tendon socket pressure - DThe medial wall is located too far inferior to the perineum
13With a Krukenberg procedure what muscle is the driver of the pincer grip:
- ASupinator
- BPronator teres
- CBrachioradialis
- DFlexor carpi radialis
14What 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:- AFoot that progresses rapidly into plantar flexion during loading response
- BFoot that progresses slowly into plantar flexion during loading response
- CHeel should have a relatively firm durometer
- DHeel should have a relatively soft durometer
15Today 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:- APlantar flex the prosthetic foot
- BDorsiflex the prosthetic foot
- CCheck to see if the patient switched to a shoe with a higher heel height compared to
what she used to wear - DCheck to see if the patient switched to a shoe with a lower heel height compared to
what she used to wear
16The 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:- ABlind patients with bilateral below elbow amputations
- BUnilateral above elbow amputee
- CA patient concerned with the cosmetic appearance
- DFailed prosthetic use for bilateral below elbow amputations
17A 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:- A555
- B#7
- C5XA
- DA mechanical prosthetic hand
18What 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:- AHave the forearm lift tab located distally/anterior
- BHave forearm lift tab moved proximal/anterior
- CMove proximal base plate and retainer on humeral section posterior
- DCheck the level of resistance in the cable housing
19What bony landmark is utilized for a weight bearing prosthesis in a hip disarticulation:
- APubic rami
- BGreater trochanter
- CIschial tuberosity
- DIliac crest
20What 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:- AHave the forearm lift tab located posterior/ proximal
- BHave forearm lift tab moved proximal
- CChange triple control to dual control, switch split housing to single housing, utilize
ballistic motion for forearm lift - DMove NW ring laterally towards the prosthetic side
21Why is choosing a SACH foot with a firm heel durometer not advised for TT patients with
poor prosthetic side knee stability:- AIt will increase knee stability
- BIt will decrease knee stability
- CIt will increase shock absorption at heel strike
- DIt will not provide enough keel resistance
22You 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:- AProsthesis too short
- BResidual limb pain
- CProsthesis too long
- DWeak quadriceps
23A TF patient is seen in your clinic. It is noted that as he ambulates with a circumducted
gait. Select ALL possible causes:- AProsthesis height is longer than his sound side ischial tuberosity to floor
measurement - BProsthetic suspension is not adequate
- CThe user does not have adequate hip flexor strength
- DProsthetic foot is plantar flexed excessively
- AProsthesis height is longer than his sound side ischial tuberosity to floor
24A 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:- AProsthetic keel too short
- BProsthetic knee has too little resistance to flexion
- CNot enough flexion is built into the socket
- DProsthetic socket is excessively flexed
25A 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:- AProsthetic knee set too far posterior to the TKA line
- BTight extension aid
- CProsthetic knee set too far anterior to the TKA line
- DWeak hip flexors
26TT prosthetic sockets that are excessively extended cause excessive pressure in what areas:
- Aanterior/proximal
- Banterior/distal
- Cposterior/distal
- Dposterior/proximal
27T/F, Outsetting the prosthetic foot on a TT prosthesis increases socket pressure
medial/distal and lateral/proximal:- ATrue
- BFalse
28A forequarter amputation removes what structures:
- AFemur and half of pelvis
- BFemur and acetabulum
- CArm, clavicle, and scapula
- DArm and scapula
29A 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:- AProsthetic keel too short
- BProsthetic heel is too firm
- CProsthetic Keel is too soft
- DProsthetic heel is too soft
30When choosing if a prosthetic patient is a gel liner candidate, which of the following
option(s) would assist you in this decision:- AGeneral hygiene
- BHand dexterity
- CK-level
- Dallergies
31In a transmetatarsal amputation you would expect to see what gait deviation:
- AAbsent push off
- BAbsent heel strike
- CFoot drop due to loss of dorsiflexion
- DLoss of supination during gait
32Dorsiflexing the prosthetic foot is synonymous with __________________:
- AFlexing the prosthetic socket
- BExtending the prosthetic socket
- CSwitching to a shoe with a lower heel height
- DSwitching to a shoe with a wider heel
33Why is it necessary to utilize a Berkeley alignable componentry prior to final fabrication of
an exoskeletal prosthesis:- AThis will allow alignment changes in the final prosthesis
- BThis will allow you to align the prosthesis properly as exoskeletal prostheses cannot
be re-aligned - CThis will make the prosthesis more cosmetic
- DNone of the above
34What muscle group would you expect to be the weakest in an above knee amputee:
- AHip flexors
- BHip abductors
- CHip extensors
- DHip adductors
35When flexing an AK socket to accommodate a flexion contracture what concurrent
alignment adjustment should also be made:- ADorsiflex the prosthetic foot
- BPlantarflex the prosthetic foot
- CMove the prosthetic knee anterior
- DMove the prosthetic knee posterior
36An AK patient is seen in clinic. When ambulating the patient complains of knee
instability. What alignment change could possibly assist in regaining knee stability:- AFlex the prosthetic socket
- BMove the prosthetic knee anterior relative to the socket
- CMove the prosthetic knee posterior relative to the socket
- Dmove the prosthetic foot posterior relative to the prosthetic knee and socket
37With a knee disarticulation amputee what is a cosmetic concern:
- AKnee extends too far out when sitting or kneeling
- BLeg length discrepancy
- CThe non amputated side extends too far past surgical knee side
- DKnee too bulky
38An AK patient is seen in clinic. When ambulating the patient complains of knee
instability. What alignment change could possibly assist in regaining knee stability:- AExtend the prosthetic socket
- BMove the prosthetic knee anterior relative to the socket
- CShorten the overall height of prosthesis
- DMove prosthetic socket posterior in relation to the prosthetic knee
39When making an angular change utilizing endoskeletal componentry it is necessary to:
- ALoosen the bolt opposite the direction of desired angulation and tighten the
opposing bolt on the side of desired angulation - BLoosen the bolt on the side of desired angulation and tighten the opposing bolt
opposite the side of desired angulation
- ALoosen the bolt opposite the direction of desired angulation and tighten the
40Choose all that apply to the benefit of a knee disarticulation over an above knee
amputation with prosthetic fit:- ASocket rotational control
- BNatural weight bearing surface
- CMuscular balance equalized with abductors and adductors
- DLarger surface area for prosthetic socket
41When removing endoskeletal prosthetic componentry for adjustment, how do you save
your original alignment:- ACompletely back out two opposing bolts
- BCompletely back out three adjacent bolts
- CCompletely back out two adjacent bolts
- DCompletely back out all bolts
42In general polycentric prosthetic knees are considered inherently stable. Why is this:
- APolycentric knees have multiple linkages which increases resistance to flexion
- BPolycentric knees have a theoretical knee center which is located posterior and
superior - CPolycentric knees are difficult to bend manually and under body weight the
resistance increases making them even more difficult to bend - DPolycentric knees utilize fluid friction which resist fast motions such as knee
buckling
43Which of the following is not part of the Scarpa's triangle:
- ARectus femoris
- BInguinal ligament
- CSartorius
- DAdductor longus
44Choose all answers that are considered benefits of polycentric knees:
- AThey relatively shorten in swing phase of AK prosthetic gait
- BThey provide increased cosmesis when sitting
- CThey are inherently stable
- DThey have less moving parts when compared to other prosthetic knee designs
45T/F, In a TT amputation when trying to increase the energy return of a dynamic response
foot it may be necessary to increase plantarflexion:- ATrue
- BFalse
46The gait cycle is composed of what:
- AHeel strike on one side followed by heel strike by that same foot
- BHeel strike to push off
- CHeel strike on one side followed with heel strike on the other side
- DPush off on one side followed by push off on the opposite side
47A 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:- ADial the Automatic forearm balance mechanism located proximal posterior on the
forearm shell - BInstall a spring lift assist
- CLengthen the forearm section 10mm
- DSwitch the terminal device from a 5XA hook to a #7 hook
- ADial the Automatic forearm balance mechanism located proximal posterior on the
48What 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:- AHave the forearm lift tab located proximal and anterior
- BHave forearm lift tab moved proximal and anterior
- CMove the proximal base plate and retainer on humeral section anterior
- DMove proximal base plate and retainer on humeral section posterior
49During many amputations the surgeon will perform a myoplasty
What does this consist of:- ASurgical attachment of muscle to muscle
- BSurgical attachment of the muscle to the bone
- CBone bridge between two bones, artificial joint ossification
- DSurgical replacement of a joint due to osteoarthritis
50T/F, When fabricating a TR figure of eight harness it is necessary to incorporate elastic
materials in the control strap:- ATrue
- BFalse
51T/F, When fabricating a TR figure of eight harness the inverted Y-strap should be located
in the delto-pectoral groove:- ATrue
- BFalse
52What muscle is responsible for scapular elevation:
- ATrapezius muscle
- BDeltoid
- CPecotralis major
- DRotator cuff
53A 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:- AVerrucous hyperplasia
- BAckerman's Tumor
- CExcessive distal pressure within the prosthetic socket
- DIncomplete seating of residual limb in prosthetic socket
54A 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:- A5XA
- B#7
- CMechanical prosthetic hand
- D555
55With a hip disarticulation prosthesis, what is used for suspension:
- AIschial tuberosity
- BIliac crest
- CIliac crest of the intact side
- DSacrum
56When 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:- AIt will increase the comfort of the user
- BIt will position the control cable optimally
- CIt will position the inverted Y-strap in the delto-pectoral groove
- DNone of the above
57When recommending an ischial containment TF socket what are some of the
biomechanical goals that accompany this design:- AThe ischial seat provides a weight bearing surface
- BBy containing the ischium we can decrease distal lateral discomfort in weight
bearing - CBy containing the ischium we can decrease proximal medial irritation
- DBy containing the ischium we can decrease proximal anterior irritation
58With the upper extremity, supination and pronation occur at what joint:
- ADistal radioulnar
- BRadiocarpal
- CProximal radioulnar
- DA and C
59A 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:- AAdd a prosthetic sock
- BDrop the ischial seat 1cm distally
- CAdd pad adjacent to scarpas triangle
- DAdd a proximal posterior pad inferior to the ischial seat
60Standard bench alignment for a TT prosthesis with a SACH foot in the coronal plane is:
- A0-12mm outset
- B0-12mm posterior
- C0-12mm anterior
- D0-12mm inset
61With a below elbow amputation all of these muscles would be transected except:
- AFlexor carpi radialis
- BSupraspinatus
- CBrachioradialis
- DPronator quadratus
62A 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:- AOutset the foot 3mm
- BInset the foot 3mm
- CDorsiflex the foot
- DPlantarflex the foot
63Many 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:- AThe patient would have difficulty moving from sit to stand only
- BThe patient would have difficulty during double support instances in prosthetic gait
- CThe patient would be unable to sit
- DThe patient would have shortened step length
64Which muscle is the primary forearm supinator:
- ABiceps brachii
- BBrachioradialis
- CBrachialis
- DCoracobrachialis
65In reference to TT prosthetics excessive adduction of the prosthetic pylon would cause
what at midstance in gait:- AGenu varum
- BGenu valgum
- CGenu flexion
- DGenu extension
66One of the characteristics of the TT total surface bearing socket is:
- AOne of the characteristics of the TT total surface bearing socket is:
- BEmphasizing pressure equalization across all residual limb surfaces
- CEmphasizing pressure distribution on the tibia fibula interosseus membrane to
prevent residual limb scissoring - DEmphasizing pressure adjacent to the bony anatomy
67With a knee disarticulation what adductor muscle is transected:
- AAdductor magnus
- BAdductor longus
- CGracilis
- DAdductor brevis
68When evaluating a new trans-metatarsal amputee, what deformity of the foot and ankle
complex is typical without tendon transfers:- APes plano valgus
- BForefoot adductus
- CEquino varus
- DClub Foot
69The most accurate description of a hydraulic single axis knee is:
- AA prosthetic knee that utilizes pneumatic friction resistance to modify TF prosthetic
swing - BA prosthetic knee that utilizes mechanical friction resistance to modify TF prosthetic
swing - CA prosthetic knee that utilizes variable Elastoplast resistance to modify TF prosthetic
swing - DA prosthetic knee that utilizes fluid resistance to modify TF prosthetic swing
- AA prosthetic knee that utilizes pneumatic friction resistance to modify TF prosthetic
70All of the following muscles make up the pes anserinus except:
- ASartorius
- BGracilis
- CSemitendinosus
- DSemimembranosus
71When evaluating fluid TF prosthetic knees, which type of resistance is most adversely
effected by cold environmental temperature changes:- AHydraulic
- BPneumatic
- CMechanical
- DConstant friction
72In TF prosthetic alignment the relationship between the posterior socket shelf and the
lateral wall is referred to as:- AQ-angle
- BTKA alignment
- CSagittal flexion alignment
- DAdduction angle
73In determining the correct length of the prosthesis what bony landmark is NOT used:
- AGreater trochanter
- BIliac crest
- CAnterior superior iliac spine
- DPosterior superior iliac crest
74A TT patient is seen in clinic. At heel strike the SACH prosthetic foot rotates externally.
What is one cause of this gait deviation:- AThe prosthetic heel durometer is too firm
- BThe prosthetic heel durometer is too soft
- CThe prosthetic keel is too firm
- DThe prosthetic keel is too soft
75A 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:- A3 lbs
- B6 lbs
- C1.5 lbs
- D12 lbs
76The biceps femoris causes what motion at the hip and knee respectively:
- AHip extension, knee extension
- BHip extension, knee flexion
- CHip flexion, knee extension
- DHip flexion, knee flexion
77A TF client is seen in clinic, a medial whip is noted in prosthetic gait. What adjustment
would be appropriate to normalize swing phase alignment:- AExternally rotate the prosthetic knee
- BInternally rotate the prosthetic knee
- CInternally rotate the prosthetic foot
- DExternally rotate the prosthetic foot
78A TF client is seen in clinic, a lateral whip is noted in prosthetic gait. What adjustment
would be appropriate to normalize swing phase alignment:- AExternally rotate the prosthetic knee
- BInternally rotate the prosthetic knee
- CInternally rotate the prosthetic foot
- DExternally rotate the prosthetic foot
79During normal gait you see the pelvis drop during mid stance. What muscle weakness
could cause this:- APiriformis
- BGluteus minimus
- CGluteus medius
- DIliopsoas
80When a prosthetic foot inset is increased, socket pressures will become more apparent:
- ALateral/Distal & Medial/Proximal
- BLateral/Proximal & Medial/Distal
- CMedial/Distal & Medial/Proximal
- DLateral/Distal & Lateral/Proximal
81What is the maximum amount of knee flexion contracture that could be fit with a
traditional TT PTB socket:- A10*
- B15*
- C25*
- D35*
82Which muscle of the quadriceps femoris group will steady the hip joint and help iliopsoas
to flex the thigh:- ARectus femoris
- BVastus lateralis
- CVastus medialis
- DVastus intermedius
83When 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:- AAnkle dorsiflexors & Eccentric contraction
- BAnkle dorsiflexors & Concentric contraction
- CAnkle plantarflexors & Concentric contraction
- DAnkle plantarflexors & Eccentric contraction
84When aligning the prosthetic socket posterior in relation to the prosthetic foot, forces
present in the socket will increase where:- AAnterior/Proximal & Posterior/distal
- BProximal/Medial & Distal/Lateral
- CPosterior/Proximal & Anterior/Distal
- DProximal/Lateral & Distal/Medial
85T/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”:- ATrue
- BFalse
86A 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:- AGluteus Maximus
- BAdductor Magnus
- CVastus lateralis
- DGluteus Medius
87For 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:- ATo give tripod base for support
- BTo facilitate natural arm swing
- CTo facilitate normal prosthetic step length
- DTo encourage knee stability and confidence
88All are bony landmarks that are easily palpable in the lower limb except:
- ALateral malleolus
- BTibial tuberosity
- CLesser trochanter
- DIschial tuberosity
89A 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:- ALess, More
- BNegative, Positive
- CDynamic, Static
- DPositive, Negative
90An elbow disarticulation patient is seen in clinic for a prosthesis replacement. What type
of articulation at the elbow would be indicated:- AHosmer friction elbow
- BResidual limb activated locking hinge
- COutside locking hinge
- DErgo arm
91T/F:When fabricating a prosthetic socket in general it is necessary to have all “like” fibers
directly adjacent to aid in strength:- ATrue
- BFalse
92When 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:- AElastic strapping
- BInelastic strapping
- CLeather strapping
- DCotton webbing
93Why are flexible elbow hinges recommended for longer TR amputees:
- AAllows better pre-positioning
- BDurability
- CImproved residual limb comfort
- DAllows patient to maintain natural pronation/supination
94Partial 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:- ARigid sole shoe
- BRocker addition to shoe sole
- CCarbon insert
- DOTS carbon AFO
95When recommending a prostheses for a bilateral TR patient what style of suspension
would you not recommend:- ANorthwestern self suspending sockets
- BCustom silicone suction suspension sockets
- CMunster self suspending sockets
- DPin lock suspension sockets
96When fabricating a TH prosthesis it is important to add pre-flexion to the prosthetic
elbow, why is this:- ATo ensure full ROM will be available in the prosthetic elbow
- BTo decrease force necessary to initiate elbow flexion
- CTo maintain a natural hang angle
- DTo decrease premature wear on the elbow lock notches
97Transverse tarsal joints allow inversion and eversion of the foot. Choose the other joint(s)
that allow inversion and eversion:- ATalocrural joint
- BSubtalar and talocalcaneonavicular
- CSuperior and inferior tibiofibular joints
- DAll of the above
98With 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):- AAnterior/Posterior measurement
- BLateral A/P measurement
- CMedial A/P measurement
- DMedial/Lateral measurement
99A TR patient needing the ability to vary grip force on small delicate objects would benefit
from which terminal device:- AVoluntary closing prosthetic hook
- BVoluntary closing prosthetic hand
- CVoluntary opening prosthetic hand
- DVoluntary opening prosthetic hook
100Injury to the superior gluteal nerve will result in what gait deviation:
- AAbsent push off
- BAbsent heel strike
- CCircumducted gait
- DTrendelenburg gait
101A 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:- A10lbs
- B5.7lbs
- C6.3lbs
- D7lbs
102When 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:- AApply plaster laterally
- BApply plaster medially
- CShave plaster off medially
- DShave plaster off laterally
103The talus does not articulate with the:
- ACuboid
- BTibia
- CNavicular
- DFibula
104When fabricating TF socket with a hip joint, the hip joint should be located where in
relation to the greater trochanter:- A12mm inferior & 25.4mm posterior
- B10mm inferior & 20mm anterior
- C12mm superior & 25.4mm posterior
- D12mm anterior & 25.4mm superior
105In TF applications, when inadequate socket flexion is incorporated into the prosthesis
what will the patient be unable to do without a gait deviation:- AStand with decreased lumbar lordosis
- BSit with prosthetic knee and sound side knees level in the coronal plane
- CHave symmetric step lengths
- DFully extend the prosthetic knee
106The tibial nerve innervates muscles to the_____portion of the leg, while the deep fibular
nerve innervates muscles on the _____ portion of the leg:- Aposterior, anterior
- Banterior, posterior
- Canterior, lateral
- Dposterior, lateral
107A 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:- ADecrease pressure on the medial tibial flare
- BDecrease pressure posterior and adjacent to the popliteal artery
- CRecommend the patient be seen by a vascular specialist
- DFlex the prosthetic socket
108T/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:- ATrue
- BFalse
109You 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:- AKnee flexion contracture
- BKnee flexion and hip flexion contracture
- CHip flexion and hip adductor contracture
- DKnee extensor and hip flexor contracture
110T/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:- ATrue
- BFalse
111T/F, A pull sock is often used to donn a TF suction suspension to draw tissue into the
socket and to facilitate hydrostatic loading:- ATrue
- BFalse
112If the sciatic nerve is severed at the level of the ischial tuberosity, muscle function will
NOT be impaired at the:- AKnee joint
- BAnkle joint
- CHip joint
- DSubtalor joint
113T/F, A silesian belt is used to increase coronal plane stability in TF prosthesis
applications:- ATrue
- BFalse
114At heel strike the knee joint is at ____while the ankle joint is at_____:
- AAt neutral/full extension, 90 degrees/neutral
- B10 deg flexed, 5 deg plantarflexed
- CNeutral, 10 degrees dorsiflexion
- DNeutral, 5 degrees dorsiflexion
115In normal gait, maximum knee flexion reaches approximately:
- A30-35 degrees
- B35-40 degrees
- C45-50 degrees
- D60-65 degrees
116T/F: The duration of double support varies inversely with the speed of walking and in
running double support is absent:- ATrue
- BFalse
117The stance phase of gait makes up what percent of the gait cycle during ordinary walking
speeds:- A40%
- B60%
- C80%
- D20%
118Your 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):- ADistal residual limb
- BAnterior tibia and tibial crest
- CFibular head and cut end of the fibula
- DTibial tuberosity and patellar bone
119When external rotation of the prosthetic foot is needed the toe lever or keel of the foot is
relatively:- ALengthened
- BShortened
- CSoftened
- DHardened
120T/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:- ATrue
- BFalse
121During swing phase of the gait cycle what muscles are active to achieve dorsiflexion:
- AAnterior tibialis, extensor hallucis longus, extensor digitorum longus
- BAnterior tibialis, peronous brevis, extensor digitorum longus
- CAnterior tibialis, gastroc soleus, extensor hallucis longus
- DAnterior tibialis, extensor hallucis longus, tibialis posterior
122The sciatic nerve innervates all these muscles except:
- ASemitendinosis
- BBiceps femoris
- CSemimembranosis
- DGluteus medius
123You are seeing a patient with diagnosis of peripheral vascular disease. What is the
common artery that you can palpate to assess blood flow:- ADorsalis pedis
- BUlnar artery
- CFemoral artery
- DRadial artery
124What is the primary function of brachioradialis:
- AElbow flexion
- BElbow flexion and forearm pronation
- CElbow flexion and wrist extension
- DElbow flexion and wrist flexion
125You 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:- AOber test
- BThomas test
- CHip extensor tightness
- DPlantar flexion tightness
126Possible causes for knee instability at initial contact in the TF prosthesis include
- AHeel cushion too firm
- BKnee set too far anterior
- CInsufficient socket flexion
- DPatient has weak hip extensors
127The primary indication for use of Silesian belt is rotational control of the prosthesis
- ATrue
- BFalse
128How would you correct an abrupt knee flexion moment at loading response
- AIncrease socket flexion
- BIncrease plantarflexion bumper
- CMove foot anterior
- DAll of the above
129If the prosthetic foot is positioned too far posterior in relation to the socket:
- AAn excessive knee flexion moment will occur at LR
- BAn insufficient knee extension moment will occur at late midstance
- CAn insufficient knee flexion moment will occur at LR
130Which of the following are muscles of the anterior leg
- ATibialis Anterior
- BExtensor Digitorum Longus
- CExtensor Hallicus Longus
- DExtensor Digitorum Brevis
- EExtensor Hallicus Brevis
- FPeroneus Tertius
131What functions do muscles of the anterior leg provide?
- AInversion
- BEversion
- CDorsiflexion
- DPlantarflexion
132What functions do the muscles of the posterior leg provide?
- APlantarflexion
- BKnee flexion
- CDorsiflexion
- DEversion
- EInversion
133The iliofemoral ligament limits excessive flexion of the hip joint
- ATrue
- BFalse
134Which nerve innervates the muscles of the lateral leg
- ADeep Peroneal
- BSuperficial Peroneal
- CTibial
- DPlantar
- ESural
135Which of the following are adductors
- APectineus
- BSartorius
- CGracilis
136Which nerve innervates the muscles of the anterior leg
- ASuperficial peroneal
- BDeep peroneal
- CPlantar
- DSural
137The function of the ACL is to prevent the posterior motion of the tibia with respect to the femur
- ATrue
- BFalse
138The semimembranosus, semitendinosus, and biceps femoris are innervated by what nerve and supplied by what artery?
- AFemoral
- BSciatic
- CObturator
- DProfunda Femoris
- EFemoral artery
- FObturator artery
139What nerve innervates the muscles of the posterior leg?
- AFemoral
- BTibial
- CSciatic
- DDeep Peroneal
140The muscles of the lateral leg provide what function?
- AEversion
- BInversion
- CSupination
- DPlantarflexion
141The femoral nerve innervates which of the following:
- AVastus intermedius
- BRectus femoris
- CVastus lateralis
- DGracilis
142What muscles make up the quadriceps group?
- AVastus Lateralis
- BVastus Intermedius
- CVastus Medialis
- DBiceps Femoris
- ERectus Femoris
143The obturator nerve innervates which of the following:
- AHip Extensors
- BAdductors
- CAbductors
- DHip Flexors
144Which of the following are muscles of the posterior leg?
- ATibialis posterior
- BPopliteus
- CSoleus
- DGastrocnemius
145Muscles of the lateral leg include:
- APeroneus tertius
- BPeroneus brevis
- CPeroneus longus
- DExtensor hallicus longus
- EExtensor digitorum longus
146Which nerve supplies the extensor digitorum longus and brevis?
- ATibial nerve
- BPlantar Nerve
- CSuperficial Peroneal
- DDeep Peroneal
- ESciatic
147What is the primary action and innervation of the Gracilis?
- AHip abduction
- BHip flexion
- CHip Adduction
- DHip external rotation
- EFemoral nerve
- FObturator nerve
- GSciatic Nerve
148At midstance ground reaction line is as follows:
- AAnterior ankle
- BPosterior ankle
- CAnterior knee
- DPosterior knee
- EAnterior hip
- FPosterior hip
149Muscle activity at initial contact
- AHip Flexors
- BHip Extensors
- CKnee Flexors
- DKnee Extensors
- EDorsiflexors
- FPlantarflexors
150The knee is slightly flexed at initial contact.
- ATrue
- BFalse
151Which of the following is a tarsal-metatarsal disarticulation?
- ATransmetatarsal
- BChopart
- CBoyd
- DLisfranc
152If 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.
- ATrue
- BFalse
153Excessive socket adduction results in:
- AMedial leaning pylon
- BLateral leaning pylon
- CWide-based gait
- DWalking on medial border of the foot
- EWalking on lateral border of the foot
154Inital coronal bench alignment for PTB socket has the foot outset 1/2" relative to socket midline at MTP.
- ATrue
- BFalse
155At mid-stance, a properly aligned prosthesis will increase pressures at proximal __________ socket with corresponding load on the distal ________.
- Alateral/medial
- BMedial/lateral
156When prosthetic foot is aligned too far posterior in relation to the socket:
- AExcessive knee flexion moment at LR
- BInsufficient knee extension moment at late midstance
- CInsufficient knee flexion moment at LR
- DExcessive knee extension moment at late midstance
157Causes for a fully extended knee at initial contact include
- AInsufficient pre-flexion of the socket
- BFoot too anterior
- CFoot too posterior
- DFoot too dorsiflexed
158Which of the following muscles originate on the fibular head?
- AGastrocnemius
- BSoleus
- CPlantaris
- DPeroneus longus
- EPeroneus brevis
- FTibialis anterior
- GExtensor digitorum longus
159The proximal trimlines for a PTBSCSP socket should terminate 65 mm proximal to MTP level.
- ATrue
- BFalse
160Which muscles are transected in a partial foot amputation that normally counteract the tendency to drift into equinovarus position?
- AFlexor Digitorum Longus
- BPernoeus Brevis
- CExtensor Digitorum Longus
- DTibialis Anterior
- EFlexor Hallicus longus
- FPeroneus Tertius
161What are possible causes of medial brim pressure in the quad socket?
- AExcessive sock ply
- BInsufficient sock ply
- CMedial wall too high
- DCorner too snug
- EA/P too tight
- FA/P too loose
- GM/L too tight
- HM/L too loose
162Which of the following may lead to a circumducted gait?
- AProsthesis is too long
- BProsthesis has too much alignment stability
- CA/P Dimension too large
- DExtension assist is too strong
163Which muscles retain their full power in a supracondylar amputation?
- AAdductor Magnus
- BAdductor Brevis
- CAdductor Longus
- DGracilis
164The dynamic keel of an energy storing foot substitutes in part for the:
- ABiceps femoris
- BExtensor Hallicus brevis
- CGastrocnemius
- DTibialis Anterior
165You notice the ischial tuberosity is positioned medial and anterior of desired location in the socket. Possible reasons may be:
- AML too loose
- BML too tight
- CAP too large
- DAP too small
166Pain in the Scarpa's Triangle may be due to compresison of which nerve:
- AObturator
- BFemoral
- CSciatic
- DCommon Peroneal
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- Quiz on Prosthetic MC, created by Devin Schlueter on 22/08/2017.
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- Devin Schlueter
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