1. A. The tendons and nerves of the primary and secondary wrist flexors lie on the volar aspect of the wrist. All but the palmaris longus tendon, the ulnar nerve, and the flexor carpi ulnaris muscle pass beneath the flexor retinaculum. B. On cross-section, the relationship of the tendons and nerves to the transverse carpal ligament is more evident. The flexor pollicis longus is encased in its own tendon sheath (or radial bursa), whereas the four deep tendons of the flexor digitorum profundus and the four more superficial stacked tendons of the flexor digitorum superficialis are wrapped by folds in the ulnar bursa.
Source: The Wrist and Hand Complex, Joint Structure and Function: A Comprehensive Analysis, 5e
Citation: Levangie PK, Norkin CC. Joint Structure and Function: A Comprehensive Analysis, 5e; 2011 Available at: Accessed: December 27, 2017
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