Extensor Digitorum Muscle: Key to Hand and Finger Movements
The extensor digitorum muscle, located at the back of the forearm, plays a crucial role in hand and finger movements. It originates from the lateral epicondyle and splits into four tendons that run through the lateral carpal ligament and separate on the posterior part of the hand.
These tendons extend into the distal and middle finger phalanges, aiding in the extension of fingers 2 through 5. They are interconnected by two slanting bands and a small transverse band, forming the sagittal bands. These bands align the extensor tendons above the metacarpal head, improving hand leverage and stability.
Injuries to the extensor digitorum muscle and its tendons can be treated by specialists such as hand surgeons or specialized physiotherapists. They use operative and conservative therapies, guided by zonal injury classification and protocols involving immobilization and rehabilitation.
The extensor digitorum muscle is vital for hand and finger movements, with its tendons and sagittal bands providing leverage and stability. Injuries to this area are typically treated by specialists with knowledge of its complex structure and functions.
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