Question of the day!
Q: What is Martin-Gruber Anastomosis?
A: It is a median to ulnar nerve anastomosis. The ulnar nerve fibers travel with the AIN branch of the median nerve. It crosses over in the forearm to innervate the ADP, ADM, and most commonly the FDI muscle. This can occur in 15% to 20% of the population.
Q: In the arm, where can compression injury occur to the median nerve?
A: The ligament of struthers
Q: WHat muscles are innervated by the median nerve in the hand?
A: "LOAF" Muscles, Lumbricals (1,2),
Opponens Pollicis,
Abductor Pollicis Brevis,
Flexor Pollicis Brevis
(Superficial) Digital Cutaneous Branches
Q: What joint is the only “true” articulation between the axial skeleton and the upper limb?
A: The Sternoclavicular Joint.
Q: Why is lateral movement of the MCP possible in extension but not possible in flexion?
A: When the MP joint is extended the collateral ligament is loose and the component from the metacarpal to the palmar plate is taut. In flexion, the metacarpophalangeal joint collatearl ligament is taut and the part attached to the palmar plate is loose, therefor no lateral movement is possible in MP flexion. 
Question: How much ROM is available at the 5th metacarpal hammate joint? At the 4th metacarpal??
Answer: This is 30 degrees of motion at the 5th and 15 degrees of motion at the 4th.
Question: What are the fixed units of the hand?
Answer: the first and second metacarpals.
Questions: List the extrinsic flexors, superficial to deep
Answer: Superficial-Pronator, Flexor Carpi Radialis, Palmaris Logus, Flexor carpi ulnaris
Middle- Superficialis
Deep- Flexor digitorum profundi, flexor pollicis longus, pronator quadratus.
