Extensor tendon injuries, are conditions that result from the tearing, rupturing, or damage of the extensor tendons located in the hand. Extensor tendons are situated on the top surface of the hand and play a crucial role in lifting the hand and fingers upward. This type of injury can restrict hand functions by affecting important structures that allow the fingers to straighten. Extensor tendon injuries typically occur as a result of trauma such as a sharp object, a forceful impact, or twisting.

The extensor tendons are tendon extensions of the muscles in the forearm that reach up to the fingertips. In the fingers, the tendons become thinner and straighten. Additionally, tendon extensions originating from muscles in the palm (lumbrical and interosseous) also contribute to the extensor mechanism that lifts the fingers upward. As a result of injury, the ability of the fingers to straighten is reduced, leading to difficulties in daily activities. Early diagnosis and appropriate treatment are essential for correcting hand functions and preventing permanent damage.

Symptoms of Extensor Tendon Injuries:

• Severe pain and tenderness in the hand
• Swelling and bruising
• Difficulty in straightening the finger
• Locking of the finger in a bent position

Causes of Extensor Tendon Injuries:

• Hand trauma (cutting, twisting, pulling)
• Forceful impact or blow
• Repetitive and excessive hand movements
• Inflammatory conditions in some cases

Treatment of Extensor Tendon Injuries:

• Surgical repair (for complete tears)
• Rest and immobilization of the hand
• Hand exercises and physical therapy
• Support of the injured area (for partial tears)
• Use of splints or braces if necessary