Nov 6, 2025 · Compartment 4 The 4th extensor compartment of the wrist transmits the tendons of the extensor digitorum and extensor indicis.

Extensor tendon compartments of the wrist are anatomical tunnels on the back of the wrist that contain tendons of muscles that extend (as opposed to flex) the wrist and the digits (fingers …

A thickened distal extensor retinaculum at the fourth extensor compartment can impinge the EDC and EIP tendons and cause tenosynovitis and underlying fraying of the tendons (4B).

Nov 16, 2025 · Extensor Tendon Injuries are traumatic injuries to the extensor tendons that can be caused by laceration, trauma, or overuse. Diagnosis is made clinically by physical …

Learn about the types of extensor tendon injuries from expert-reviewed key points, a full textbook chapter, videos, and more from Handthology by ASSH.

Wrist extensor tenosynovitis of the 4th extensor compartment is a condition characterized by inflammation of the tendons located in the fourth compartment on the back of the wrist. These …

Sep 18, 2025 · Quiz questions Which extensor compartment of the wrist is involved in de Quervain tenosynovitis?

The extensor tendon mechanism works by pulling the extensor tendons (black arrows) towards the forearm, which causes the fingers to extend at the MCP joint. The central slip is particularly …

Aug 6, 2025 · While initial diagnostics, including an MRI, pointed towards a partial extensor tendon injury, the intraoperative findings demonstrated a stenosing tendovaginitis of the fourth …

This case shows tenosynovitis of the 4th extensor compartment, involving the extensor and extensor indicis tendons. Tenosynovitis refers to inflammation of the tendon sheath, often …