Flexor Tendons

Question 1

What are the critical pulleys required to maintain relatively normal flexor tendon gliding?

Answer 1

A2 and A4

Question 2

Where are the pulleys located?

Answer 2

A1 = MCPJ

A3 = PIPJ

A5 = DIPJ

A2 = prox phalanx
A 4 = middle phalanx
A 5 = distal phalanx

Question 3

How do you test for extrinsic flexor tendon tightness?

Answer 3

Maintain digits in full extension passively and then passively extend wrist. If flexor tension develops and the digits flex then ext flexor tightness is present.