S63.113

Clinical Causes: Direct trauma or impact to the thumb, such as a fall or crush injury. Sudden force or twisting motion during sports or physical activities. Accidental injury during manual tasks or lifting heavy objects. Repetitive stress put on the thumb over time, leading to joint instability. Previous injuries or ligament weakness in the thumb joint.

Key Symptoms: Pain localized around the MCP joint of the thumb. Swelling and bruising around the affected joint. Limited range of motion or difficulty moving the thumb. A sensation of the thumb feeling 'loose' or misaligned. Tenderness when touching the joint. Possible deformity if the subluxation is severe.

Diagnosis Path: Diagnosis is primarily based on physical examination, where a healthcare provider will assess the thumb for instability, swelling, and deformity. Imaging tests such as X-rays are often utilized to confirm subluxation, evaluate the severity of misalignment, and rule out any associated fractures or ligament injuries.

Treatment Protocols: Treatment strategies aim to reduce pain and restore proper joint alignment. Common approaches include: - Rest and immobilization with a splint or cast to allow healing. - Application of ice to reduce swelling and pain. - Non-steroidal anti-inflammatory drugs (NSAIDs) for pain relief. - Gentle range-of-motion exercises once initial swelling decreases. - In some cases, manual reduction of the subluxation by a healthcare professional. - Physical therapy to strengthen the thumb and improve stability. - Surgical intervention, if conservative measures fail or if there are significant ligament tears, may involve repairing or reconstructing damaged tissues. Recovery time varies depending on the severity of the injury and treatment adherence, but proper management is crucial to prevent chronic joint instability or arthritis.