Upper Limb 4 - Station 5

Question 1

what are the extensors expansions

Answer 1

where the extensor digitorum tendons flatten. They are triagnular tendinous aponeuroses that wrap around the dorsum and sides of the head of hte metacarpal and base of proximal phalanx

Question 2

what two bones meeting does the extensor expansion wrap around

Answer 2

metacarpal and proximal phalanx

Question 3

muscles that attach to extensor expansions

Answer 3

extensor digitorum, extensor digiti minimi, extensor indicis, lumbricals and interossei