MSK

Question 1

prime movers of fingers:

MCP-extension

Answer 1

EDC, EI, EDM

Question 2

prime movers of fingers:

PIP- extension

Answer 2

Lumbricals, interossei, Ext, Dig, Ext indicis, ext dig minimi

Question 3

prime movers of fingers:

DIP- extension

Answer 3

lumbricals, interossei, ext dig, ext indicis, ext dig minimi

Question 4

What is the action of the lumbricals and interossei if contracted together

Answer 4

flex MCP, extend the PIP, extend the DIP

Question 5

prime movers of fingers:

MCP- flexion

Answer 5

lumbricals and interossei, FDP, FDS

Question 6

action of EDC

Answer 6

extend MCP

Question 7

action of lumbricals

Answer 7

MCP flexion

PIP/DIP extension

Question 8

action of dorsal interosseI

Answer 8

MCP abduction (DAB)

Question 9

action of palmar interossei

Answer 9

MCP adduction (PAD)

Question 10

action of dorsal and palmar interossei together

Answer 10

MCP flexion, PIP/DIP extension

Question 11

differential dx for lateral elbow pain?

Answer 11

OA
Radial head pathology
LCL strain
radial nerve entrapment