MMT hand Flashcards
innervation of FCR
median C6 - C7
innervation of FCU
ulnar C7 - T1
action of FCR/FCU
wrist flexion
fair and above position for wrist flexion
forearm supinated
FCR = wrist flexed and radial deviated
FCU = wrist flexed and ulnar deviated
resistance for wrist flexion
across dorsum of wrist in direction of extension
FCR = over 2nd MC
FCU = over 4 - 5th MC
below fair position for wrist flexion
forearm neutral
palpation for wrist flexion
palpate tendons on volar (palmar) surface of wrist
substitutions for wrist flexion
finger flexors
innervation for ECR
Longus = radial nerve C6 - 7 brevis = C7 - C8
innervation for ECU
Radial nerve C7 - C8
action of ECR and ECU
wrist extension
fair and above position for wrist extension
forearm pronated
ECR = wrist extension and radial deviation
ECU = wrist extension and ulnar deviation
resistance for wrist extension
across dorsum of wrist in direction of extension
ECR over 2 - 3rd MC
ECU over 4th - 5th MC
below fair position for wrist extension
forearm neutral
palpation for wrist extension
palpate tendons on dorsal surface of wrist
ECR longus in line with 2nd MT
ECR brevis in line with 3rd MT
ECU in line with 5th MT distal to ulnar styloid process
substitution for wrist extension
finger extensors
innervation for lumbricals and interossei
Ulnar C8 - T1
fair and above position for MCP flexion with IP extension
forearm supinated
start with IP flexed and MCP neutral
move to MCP flexed and IP extended
action of lumbricals
MCP flexion with IP extension
resistance for MCP flexion with IP extension
toward MCP extension and IP flexion
below fair position for MCP flexion with IP extension
forearm neutral
substitutions for MCP flexion and IP extension
long finger flexors - IPs should remain extended
innervation for FDS
median nerve C8 - T1
action of FDS
PIP flexion
fair and above position for PIP flexion
forearm supinated
hold all fingers extended except for finger to be tested (eliminating FDP)
patient flexes PIP
resistance for PIP flexion
middle phalanx, making sure you have a floppy DIP
below fair position for PIP flexion
forearm neutral
palpation for FDS
palmar surface of wrist between wrist flexors
substitutions for PIP flexion
FDP tendosis action by extending wrist results in passive flexion, relaxing IP extension results in passive flexion
innervation for flexor digitorum profundus
dig 2 - 3 = median C8 - T1
dig 4 - 5 = ulnar C8 - T1
position for FDP
forearm supinated, stablize middle phalanx, patient flexes DIP
resistance for FDP
distal phalanx
position for below fair FDP
forearm neutral
palpation for FDP
palmar surface of middle phalanx
substitution for FDP
tendosis action by extending wrist which results in passive flexion
relaxing IP extension results in passive flexion
innervation of Extensor digitorium and extensor indicis
radial nerve C7 - C8
action of Extensor digitorium and extensor indicis
finger extension
position for finger extension
forearm pronated patient extends MCP