Fichas
Forearm and Hand
Fichas del conjunto (99)
- 1joint between the carpals and radiusradiocarpal joint
- 2joint between the carpals and metacarpalsCarpometacarpal joint (CMC)
**** Digit 1 --> has a a carpometacarpal joint , this is a saddle type joint of synovial joint between trapezium and base of 1st metacarpal. has a separate joint cavity. allows for movement in multiple planes. - 3joint between the metacarpals and phalangesmetacarpophalangeal joint
synovial
condyloid type
flexion/extension
abduction/adduction
strenghtened by medial/lateral collateral ligaments - 4which digit doesn't have an intermediate phalange?digit 1 - thumb
- 58 carpals of the wristsome lovers try positions that they can't handle
scaphoid, lunate, triquetrum, pisiform, trapezium, trapezoid, capitate, hamate - 6Wrist joints: radiocarpal joint type: what strengthens it? movements:condyloid joint - synovial
no participation with ulna
ligaments strengthen the joint capsule anteriorly and posteriorly
movements:
flexion/extension
abduction/adduction
circumduction - 7Intercarpal joints type:synovial joints between adjacent carpal bones
- 8Interphalangeal joints (PIP/DIP)Proximal/distal interphalangeal joints
synovial joints, hinge type
flexion/extension
strengthened by medial/collateral ligaments - 9Interosseous membrane : separates , compartmentsseparates forearm into compartments
anterior = flexors and pronators, largely median and some ulnar nerve innervation - 10Antebrachial fasciathickens around wrist - anteriorly as the palmar carpal ligament and flexor retinaculum
posteriorly as extensor retinaculum
this thickening prevents "bowstringing" of muscle tendons - 11flexor retinaculum (transverse carpal ligament)converts the concavity formed by the carpal bones into the carpal tunnel contents: Median Nerve
Flexor digitorium superficialis
flexor pollicis longus
flexor digitorium profundus
Function: flexor retinaculum prevents bowstringing of tendons - 12Palmar aponeurosisstrong covering of the soft tissues and overlies the long tendons
contributes to the flexor tendon sheaths distally - 134 superficial muscles orginates anteriorly (front of the forearm) from a tendon that attaches to the medial epicondyle of humeruscommon flexor tendon
(lateral to medial)
pronator teres, flexor carpii radialis (FCR)
palmaris longus
flexor carpi ulnaris (FCU)
Pass fail pass fail - 14Pronator teres : ActionAction : pronates and flexes forearm at elbow
- 15Pronator teres : Insertionmiddle portion of lateral radius
- 16Pronator teres : originmedial epicondyle of humerus
coronoid process of ulnar head - 17Pronator teres : InnervationMedian Nerve
- 18Flexor carpi radialis : Actionflexes and abducts hand at wrist
- 19Flexor carpi radialis : InnervationMedian Nerve
- 20Origin of flexor carpi radialismedial epicondyle
- 21Insertion of flexor carpi radialisbase of 2nd metacarpal
- 22Palmaris longus : originmedial epicondyle
- 23Insertion of Palmaris longuspalmar aponeurosis (apex) and flexor retinaculum
- 24Palmaris longus : ACtionflexes hand at wrist and tenses palmar aponeurosis
- 25Palmaris longus: InnervationMedian nerve
- 26Flexor carpi ulnaris : originhumeral head : medial epicondyle
ulnar head: olecranon process - 27flexor carpi ulnaris: insertionpisiform and hook of hamate , 5th metacarpal
- 28flexor carpi ulnaris: Actionflexes and adducts (ulnar deviation) hand at wrist
- 29Flexor carpi ulnaris: InnervationUlnar nerve
- 30Flexor digitorium superficialis : one muscle, two heads , explain bye bye fist : Action"bye bye fist"
doesn't do a really fist because it doesn't extend to the tips of the fingers (just the intermediate)
flexes middle phalanges at the proximal interphalangeal joint of digits 2-5; may assist flexion of proximal phalanges at metacarpophalangeal joints - 31flexor digitorium superficialis : Insertionintermediate phalanx, digits 2-5
- 32Flexor digitorium superificalis : origin humeroulnar head radial headmedial epicondyle , coronoid process
radial head : superior portion of radius - 33flexor digitorum superificials : innervationMedian nerve
- 34Deep layers of forearm : 3 muscles are innervated by theanterior interosseous nerve (branch of the median nerve)
- 35Deep muscles of the forearm:flexor digitorium profundus, flexor pollicis longus, pronator quadratus
- 36Flexor digitorum profundus : actionallows you to do an actual fist (works at the tips)
flexes distal phalanges at the distal interphalangeal joint of digits 2-5 - 37Flexor digitorum profundus: originproximal ulna and interosseous membrane
- 38flexor digitorium profundus: Insertionbases of distal phalanx of digits 2-5
- 39Flexor digitorum profundus : Innervationdigits 2-3: Anterior interosseous nerve (branch of median nerve)
digits 4-5: ulnar nerve - 40Flexor pollicis longus Action:goes all the way to the tip of the thumb and causes flexion
flexes phalanges of digit 1 - 41Flexor pollicis longus: Innervationmedian nerve (via a branch, the anterior interosseous nerve)
- 42Flexor pollicis longus : originradius, interosseous membrane
- 43flexor pollicis longus: insertionbase of distal phalanx of digit 1 (pollex)
- 44Pronator quadratus : Actionlooks like you're going to punch someone ( pronates forearm, bind radius and ulna together
- 45Pronator quadratus: origindistal ulna
- 46pronator quadratus insertion:distal radius
- 47Pronator quadratus: innervationmedian nerve (via a branch of the anterior interosseous nerve)
- 48Ulnar nerve is located where in the anterior forearm :Under the flexor carpi ulnaris (superficial) /above the flexor digitorium profundus (deep)
- 49what muscles of the anterior arm is innervated by ulnar nerve?flexor carpi ulnaris and 1/2 of flexor digitorium profundus (digits 4/5)
the rest is median nerve - 50Lumbricals : Actionssqueeze thumb against other fingers - knuckles start to hurt - due to the 4 lumbricals (they go from the flexor digitorium profundus tendon and reach around radial side, pull and extend finger (puppet muscles)
flex metacarpophalangeal joint, extend interphalangeal joints of digits 2-5 - 51Lumbricals: Origintendons of flexor digitorium profundus
- 52Lumbricals: insertionlateral sides of extensor expansions of 2 -5 digits
- 53Lumbricals: InnervationLumbricals 1/2 : median nerve (medial and lateral branches)
Lumbricals 3/4: deep branch of ulnar nerve - 541/2 LOAF Muscles are innervated by median nerve.1/2 of the lumbricals (4/5)
Thenar muscles:
Abductor pollicis brevis
Opponens pollicis
flexor pollicis brevis
Innervated: by the recurrent branch of the median nerve
"Brevis sandwich"
Opponens in the middle - 553 Palmar interossei : ActionPalmar Interossei ADduct = PAD
Adduction of 2,4,5 digits and flexion of the metacarpophalangeal joint - 563 Palmar Interossei: OriginPalmar surfaces of 2nd, 4th, and 5th MCs (unipennate)
- 573 Palmar Insertion:2nd, 4th, 5th proximal phalanges and extensor expansions
- 583 Palmar Interossei innervation:deep branch of the ulnar nerve
- 594 Dorsal Interossei : ActionDAB (dorsal interossei ABduct = DAB
abduction of digits 2-4) digit 5 doesn't count because it already has an aBductor digiti minimi ( 4 muscles because the middle finger can move in both directions) - 604 Dorsal Interossei muscles: originadjacent surfaces of MCs
- 614 Dorsal Interossei : Insertiondigits 2-4, bases of proximal phalanges, extensor expansion
- 624 Dorsal Interossei : InnervationDeep branch of the ulnar nerve
- 63Posterior Arm : 12 Muscles (8 in the front/12 on the back)6 superficial and 6 deep
- 64Brachioradialis: Actionfrom the extensor side, comes over and grabs radius --> which causes strong mid-pronated position and flexion of the elbow ( when protonated) - reverse curls
* side note- normal curls - biceps brachialis - 65Brachioradialis : Originsupracondylar ridge of humerus
- 66brachioradialis: insertiondistal lateral radius
- 67brachioradialis: innervationradial nerve
- 68Extensor carpi radialis longus /brevis : Actiongo to wrist bones and cause extension of wrist
Extend wrist/abduct (radial deviation) the hand at the wrist, fist clenching - longus only - 69Extensor carpi radialis longus/brevis : originlongus - supracondylar ridge of humerus
brevis - lateral epicondyle - 70Extensor carpi radialis longus/brevis: Insertionlongus - inserts at the base of 2nd metacarpal
Brevis- inserts at the base of 3rd metacarpal - 71Extensor carpi radialis longus/brevis: Innervationradial nerve for longus and radial nerve (deep branch) for brevis
- 72Extensor Digitorium : ActionAll four fingers
primary extension at metacarpophalangeal joint digits 2-5
secondary extension at interphalangeal joints (distal, middle, proximal) - 73Extensor Digitorum : InnervationRadial nerve
- 74Extensor digitorum : Originlateral epicondyle
- 75Extensor Digitorum : InsertionExtensor expansion of digits 2-5
- 76Extensor Digiti Minimi: ActionPrimary extension at metacarpophalangeal joint of digit 5
secondary extension at interphalangeal joints of digit 5 - 77Extensor digiti minmi : Dr. evil Originlateral epicondyle
- 78extensor digiti minimi : Insertionextensor expansion of digit 5
- 79Extensor digiti minimi: Innervationradial nerve (deep branch)
- 80Extensor carpi ulnaris : origin2 heads: lateral epicondyle, and posterior border of ulna
- 81Extensor carpi ulnaris : insertionbase of 5th metacarpal
- 82Extensor carpi ulnaris : actionextends and adducts (ulnar deviation) the hand at the wrist
- 83Supinator : ActionSupinates forearm
- 84Supinator: Originlateral epicondyle, radial collateral and annular ligament, ulna
- 85Supinator: Insertionproximal 1/3 of the radius
- 86Supinator: Innervationradial nerve
- 87Snuff box - 3 muscles (deep to posterior arm)Abductor pollicis longus, extensor pollicis brevis, and extensor pollicis longus
(Brevis sandwich!) - 88Abductor pollicis longus: Actionabduction of thumb and extends it at the carpometacarpal joint
- 89Abductor pollicis longus: Originproximal 1/3 of posterior ulna, radius, and interosseous membrane
- 90Abductor pollicis longus: Insertionbase of 1st metacarpal
- 91Abductor pollicis longus: InnervationRadial nerve (via posterior interosseous nerve,a continuation of the deep branch of the radial nerve)
- 92Extensor pollicis longus : Actionextends distal phalanx of thumb at interphalangeal joint, extends carpometacarpal and metacarpophalangel joint.
- 93Extensor pollicis brevis: Actionextends proximal phalanx of thumb at the metacarpophalangeal joint, also extends carpometacarpal joint.
- 94Extensor pollicis brevis: Origindistal 1/3 of posterior radius and interosseous membrane
- 95Extensor pollicis brevis: Insertionbase of proximal phalanx of digit 1
- 96Extensor pollicis longus : actionextends distal phalanx of thumb
- 97Extensor pollicis longus: Insertionbase of digital phalanx of digit 1
- 98Extensor indicis: actionextends proximal phalanx of digit 2, also extends hand at wrist
- 99Extensor indicis: origindistal 1/3 of posterior ulna and interosseous membrane
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- Fichas sobre Forearm and Hand , creado por Gina Fatahi el 09/02/2015.
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- Gina Fatahi
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