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 …

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 …

Each extensor tendon zone is uniquely different and has its own anatomy, evaluation, treatment and orthosis considerations. In this course we go through each zone, individually, and cover …

Mar 15, 2024 · Another feature is that these five zones can cover thumb extensors appropriately: Zone 1 is distal to the MCP joint; Zone 2 the area of the MCP joint; Zone 3 is from the MCP …

This section shows images for each individual extensor tendon exam and the video below shows the combined exam of all the extensor tendons at once. The extensor tendons are the …

Apr 10, 2025 · Extensor tendon injuries affect hand and finger extension and are classified by anatomical zones. They result from lacerations, rupture, or attrition, with Zone I injuries (mallet …

Extensor Tendon Zones in the Hand. This illustration shows the various extensor zones in the hand. Each zone differs in anatomy and properties of the extensor mechanism. Illustration by …

Aug 15, 2023 · The zone classification of extensor tendon injuries divides injuries into zones based on anatomical location. The zone classification is proposed to guide the management of …

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

Extensor tendon zones: There are 8–9 extensor tendon zones from the fingertip (zone I) to the forearm (zone VIII/IX). Injuries in each zone have characteristic deformities (e.g. zone I – …