Wrist/Hand MMT Flashcards
(FCR/FCU) action
Wrist flexion
FCR: radial deviation
FCU: ulnar deviation
(FCR/FCU) nerves
FCR: median, C6-7
FCU: ulnar C7-T1
(FCR/FCU) fair and above pos
Forearm supinated
FCR- wrist flexed and radial deviated
FCU- wrist flexed and ulnar deviated
(FCR/FCU) resistance
Across dorsum of wrist in direction of extension
FCR: over 2nd MC
FCU: over 4-5 MC
(FCR/FCU) below fair pos
Forearm neutral btw sup/pron
(FCR/FCU) palpation
Palpate tendons on volar surface of wrist
(FCR/FCU) subs
Finger flexors- fingers should stay relaxed
(ECR/ECU) actions
Wrist extension
(ECR/ECU) nerves
ECR Longus: Radial C6-7
ECR Brevis: Radial C7-8
ECU: Radial C7-8
(ECR/ECU) fair and above pos
Forearm pronated
ECR: wrist extended and radial deviated
ECU: wrist extended and ulnar deviated
(ECR/ECU) resistance
Across dorsum of wrist in direction of extension
ECR over 2-3rd MC
ECU over 4-5th MC
(ECR/ECU) below fair pos
Forearm neutral
(ECR/ECU) palpation
Palpate tendons on dorsal surface of wrist
ECR longus in line with 2nd MC
ECR brevis in line with 3rd MC
ECU in line with 5th MC distal to ulnar styloid process
(ECR/ECU) subs
Finger extensors- fingers should stay relaxed
(Lumbricals and interossei) action
MCP flexion with IP extension
(Lumbricals and interossei) nerves
Lumbricals 1-2 correspond to digits 2-3, Median Nerve C8-T1
Lumbricals 3-4 correspond to digits 4-5, Ulnar Nerve C8-T1
All interossei: Ulnar C8-T1
(Lumbricals and interossei) fair and above pos
Forearm supinated
Start with IP flexed/MCP neutral
Move to MCP flexed and IP extended
(Lumbricals and interossei) resistance
Resistance applied toward MCP extension
Resistance applied toward IP flexion
(Lumbricals and interossei) below fair pos
Forearm neutral
(Lumbricals and interossei) palpation
None
(Lumbricals and interossei) subs
Long finger flexors: IPs should remain extended
(Flexor digitorum superficialis) action
Flex the 2-5 fingers at MCP and PIP; assist to flex wrist
(Flexor digitorum superficialis) nerves
Median N, C8-T1
(Flexor digitorum superficialis) fair and above pos
Forearm supinated
Hold all fingers extended except for finger to be tested (Eliminating FDP). Patient flexes PIP
(Flexor digitorum superficialis) resistance
Resistance applied at middle phalanx.
Make sure you have a floppy DIP
(Flexor digitorum superficialis) below fair pos
Forearm neutral
(Flexor digitorum superficialis) palpation
Palmar surface of wrist between wrist flexors
(Flexor digitorum superficialis) subs
FDP: Tenodesis action by extending wrist- results in passive flexion
Relaxing IP extension results in passive flexion
(Flexor digitorum profundus) action
Flex the second through fifth fingers at MCP and DIP; assist to flex the wrist
(Flexor digitorum profundus) nerve
Digits 2-3 Median, C8-T1
Digits 4-5 Ulnar, C8-T1
(Flexor digitorum profundus) fair and above pos
Forearm supinated
Stabilized middle phalanx
Patient flexes DIP
(Flexor digitorum profundus) resistance
Resistance is applied at distal phalanx
(Flexor digitorum profundus) below fair pos
Forearm neutral
(Flexor digitorum profundus) palpation
Palmar surface of middle phalanx
(Flexor digitorum profundus) subs
Tenodesis action by extending wrist- results in passive flexion
Relaxing IP extension results in passive flexion
(Extensor digitorum, extensor indicis, extensor digiti minimi) action
Finger extension
(Extensor digitorum, extensor indicis, extensor digiti minimi) nerve
Radial C7-8
(Extensor digitorum, extensor indicis, extensor digiti minimi) fair and above pos
Forearm pronated
Patient extends MCP
(Extensor digitorum, extensor indicis, extensor digiti minimi) resistance
Resistance applied toward flexion on proximal phalanx
(Extensor digitorum, extensor indicis, extensor digiti minimi) below fair pos
Forearm neutral
(Extensor digitorum, extensor indicis, extensor digiti minimi) palpation
Tendons are apparent of dorsum of hand
(Extensor digitorum, extensor indicis, extensor digiti minimi) subs
Tenodesis action produces passive IP extension
(Dorsal interossei, abductor digiti minimi) action
Finger abduction
(Dorsal interossei, abductor digiti minimi) nerve
Ulnar C8-T1
(Dorsal interossei, abductor digiti minimi) fair and above pos
Forearm pronated
Patient spreads fingers
(Dorsal interossei, abductor digiti minimi) resistance
Resistance toward adduction at distal phalanx
(Dorsal interossei, abductor digiti minimi) below fair pos
Partial range
(Dorsal interossei, abductor digiti minimi) palpation
1st dorsal interossei: at base of proximal phalanx, radial side of index finger
Abductor digiti minimi: ulnar border of hand
(Dorsal interossei, abductor digiti minimi) subs
None
(Palmar interossei) action
Finger adduction
(Palmar interossei) nerve
Ulnar C8-T1
(Palmar interossei) fair and above pos
Hand pronated
Patient adducts fingers toward middle finger
(Palmar interossei) resistance
Resistance toward abduction at middle phalanx
(Palmar interossei) below fair pos
Partial range
(Palmar interossei) palpation
None
(Palmar interossei) subs
Finger flexion
(Flexor pollicis brevis) action
Thumb MP flexion
(Flexor pollicis brevis) nerve
Superficial head, Medial C8-T1
Deep head, Ulnar C8-T1
(Flexor pollicis brevis) fair and above pos
Forearm supinated
Patient flexes MP with IP extended
(Flexor pollicis brevis) resistance
Resistance applied toward extension on the proximal phalanx
(Flexor pollicis brevis) below fair pos
Partial range
(Flexor pollicis brevis) palpation
Ulnar side of FP longus tendon in thenar eminence
(Flexor pollicis brevis) subs
None
(Flexor pollicis longus) action
Thumb IP flexion
(Flexor pollicis longus) nerve
Median C8-T1
(Flexor pollicis longus) fair and above pos
Forearm supinated
Stabilize MP in extension
Patient flexes IP
(Flexor pollicis longus) resistance
Resistance applied toward extension on distal phalanx
(Flexor pollicis longus) below fair pos
Partial range
(Flexor pollicis longus) palpation
Tendon on palmar surface of proximal phalanx of thumb
(Flexor pollicis longus) subs
Relaxation of IP extension produces passive flexion
(Extensor pollicis brevis) action
Thumb MP extension
(Extensor pollicis brevis) nerve
Radial C7-8
(Extensor pollicis brevis) fair and above pos
Forearm midposition
Stabilize MC
Patient extends MP
(Extensor pollicis brevis) resistance
Resistance applied toward flexion at proximal phalanx
(Extensor pollicis brevis) below fair pos
Partial range
(Extensor pollicis brevis) palpation
Base of 1st MC
Lies between tendons of abd. Pollicis and extensor pollicis longus
(Extensor pollicis brevis) subs
EP longus- see extension of IP and CMC adduction
(Extensor pollicis longus) action
Thumb IP extension
(Extensor pollicis longus) nerve
Radial C7-8
(Extensor pollicis longus) fair and above pos
Forearm midposition
Stabilize prox phalanx
Patient extends IP
(Extensor pollicis longus) resistance
Resistnace applied toward flexion at distal phalanx
(Extensor pollicis longus) below fair pos
Partial range
(Extensor pollicis longus) palpation
Ulnar side of anatomical snuff box on dorsal surface of prox phalanx
(Extensor pollicis longus) subs
Thenar muscle flex CMC resulting in passive IP extension
(Abd. PB, Abd. PL) action
Thumb abduction
(Abd. PB, Abd. PL) nerve
Abd. PL- radial C7-8
Abd. PB- median C8-T1
(Abd. PB, Abd. PL) fair and above pos
Forearm supinated
Abd PB: patient abducts thumb
Abd PL: patient “abducts” thumb in plane halfway between true abduction and extension
(Abd. PB, Abd. PL) resistance
Resistance applied toward adduction
Abd PB on proximal phalanx
Abd PL on distal end of 1st MC
(Abd. PB, Abd. PL) below fair pos
Partial range
(Abd. PB, Abd. PL) palpation
Abd PB: center of thenar eminence, medial to OP
Abd PL: at base of 1st MC on radial side of EPB
(Abd. PB, Abd. PL) subs
EP brevis substitutes for Abd PL- abduction moves toward dorsum of hand
(Adductor pollicis, 1st dorsal interossei) action
Thumb adduction
(Adductor pollicis, 1st dorsal interossei) nerve
Ulnar C8-T1
(Adductor pollicis, 1st dorsal interossei) fair and above pos
Forearm pronated
Patient adducts thumb to palm
(Adductor pollicis, 1st dorsal interossei) resistance
Resistance applied toward abduction at prox phalanx
(Adductor pollicis, 1st dorsal interossei) below fair pos
Partial range
(Adductor pollicis, 1st dorsal interossei) palpation
Web space between thumb and index finger
(Adductor pollicis, 1st dorsal interossei) subs
FP longus and brevis- see thumb flexion
EPL- see CMC extension
(Opponens pollicis, opponens digiti minimi) actions
Opposition
(Opponens pollicis, opponens digiti minimi) nerve
OP: median C8-T1
ODM: Ulnar C8-T1
(Opponens pollicis, opponens digiti minimi) fair and above pos
Forearm supinated
Patient brings tips of thumb and little finger together
(Opponens pollicis, opponens digiti minimi) resistance
Resistance applied at palmar eminences to spread out hand
(Opponens pollicis, opponens digiti minimi) below fair pos
Partial range
(Opponens pollicis, opponens digiti minimi) palpation
OP along radial shaft of 1st MC lateral to Abd PB
ODM hypothenar eminence radial side of 5th MC
(Opponens pollicis, opponens digiti minimi) subs
FP longus and brevis- see finger flexion, touching tips to fingers
Abd PB- no rotation seen