Gamekeeper’s Thumb

Causes of Gamekeeper’s Thumb

Gamekeeper’s thumb can result from trauma or repetitive stress on the thumb joint. Common causes include:

• Sports injuries: Catching or stopping a ball with the bare hand.
• Falls: Landing on an outstretched thumb, particularly while holding objects such as a ski pole.
• Repetitive stress: Chronic strain from pinching, gripping, or heavy hand use over time.

Without proper treatment, repeated stress or untreated injuries can lead to permanent thumb instability and weakness in pinch and grip tasks.

Symptoms of Gamekeeper’s Thumb

Signs and symptoms of this injury include:

• Pain at the base of the thumb, often worsening with movement.
• Swelling and bruising around the thumb joint (though mild tears may lack visible bruising).
• Weakness when pinching, gripping, or holding objects.
• Difficulty performing everyday tasks, such as writing or opening jars.
• Loss of thumb stability, making the hand feel weaker.
• Limited range of motion or discomfort during thumb movement.

Early recognition is important, as delayed treatment can result in chronic instability and functional limitations.

Diagnosis of Gamekeeper’s Thumb

Diagnosis typically involves:

Physical examination: The doctor will test the stability of the thumb’s MCP joint through stress maneuvers. Local anesthesia may be used if needed for patient comfort.

Imaging tests:

• X-rays to rule out fractures.
• Ultrasound or MRI to assess the ligament and detect complete tears or Stener lesions.

Accurate diagnosis ensures the appropriate treatment plan, whether conservative or surgical.

Treatment for Gamekeeper’s Thumb

Non-Surgical (Conservative) Treatment

Partial UCL tears may be managed without surgery:

• Ice therapy to reduce swelling.
• Pain-relieving medications such as NSAIDs.
• Splint or cast immobilization for approximately six weeks.
• Progressive hand and thumb exercises after immobilization to restore motion and strength.

Surgical Treatment

Complete tears, severe injuries, or Stener lesions usually require surgery:

• The torn ligament is repaired and stabilized.
• Pins or temporary internal splints may support healing.
• Postoperative rehabilitation includes gradual exercises and hand therapy to restore thumb function.
• In severe cases, ligament reconstruction or tendon transfer may be performed.

Risks and Considerations

Surgery is generally safe but may involve:

• Infection or wound complications
• Stiffness or limited motion
• Temporary weakness or discomfort
• Adhesion formation may require additional therapy

With proper rehabilitation, most patients regain strength, stability, and function in the thumb.

Conclusion

Gamekeeper’s thumb can significantly affect hand function if left untreated. Early diagnosis and appropriate treatment, whether conservative for partial tears or surgical for complete ligament injuries, are key to restoring thumb stability, grip strength, and dexterity. Protecting the thumb during sports and repetitive activities, as well as during falls, along with proper rehabilitation, ensures optimal recovery and reduces the risk of recurrence.