The Dorsal Digital (Extensor) Expansion

Question 1

the four extensor digitorum tendons flatten to form what?

Answer 1

extensor expansions

Question 1

describe an extensor expansion

Answer 1

• each extensor expansion is a triagnular tendinous aponeurosis that wraps around the dorsum and sides of the head of the metacarpal and base of the proximal phalanx

Question 2

Answer 2

Question 3

which muscles attach onto the extensor expansion?

Answer 3

1. lumbricals
2. dorsal interossei
3. palmar interossei
4. extensor digitorum