1. The carpal tunnel

Question 1

What are the borders of the carpal tunnel?

Answer 1

Base and sides = concave carpal arch consisting of:

• scaphoid and trapezium tubercles laterally
• hook of hamate and pisiform medially

Roof = flexor retinaculum originating on lateral side and inserting into medial side

Question 2

Describe the contents of the carpal tunnel.

Answer 2

9 tendons:

• 4 tendons of flexor digitorum superficialis
• 4 tendons of flexor digitorum profundus
• flexor pollicis longus tendon (own synovial sheath)