S63.651

Clinical Causes: Sudden trauma from a fall or blow to the finger Forceful twisting or hyperextension of the finger Sports injuries, especially in activities involving gripping or punching Accidental impact during manual labor or recreational activities Crushing injuries that force the finger into an awkward position

Key Symptoms: Pain around the metacarpophalangeal joint of the left index finger Swelling and tenderness in the affected area Bruising or discoloration around the joint Limited range of motion or stiffness in the finger Difficulty gripping or holding objects with the finger A feeling of instability or weakness in the joint

Diagnosis Path: Diagnosis typically involves a physical examination by a healthcare provider, who will assess the finger for swelling, tenderness, and range of motion. In some cases, imaging tests such as X-rays may be ordered to rule out fractures or more severe injuries, though sprains do not usually show up on X-rays. The healthcare provider may also evaluate the stability of the joint and check for ligament tears.

Treatment Protocols: Treatment aims to reduce pain, control swelling, and restore function. Common approaches include: - Resting the finger and avoiding activities that cause pain - Applying ice packs to decrease swelling (usually for 15-20 minutes every few hours) - Using a splint or finger buddy taping to stabilize the joint - Taking over-the-counter pain relievers, such as acetaminophen or nonsteroidal anti-inflammatory drugs (NSAIDs) - Elevating the hand to reduce swelling - Engaging in gentle finger exercises as recommended by a healthcare provider In more severe cases, or if there is significant ligament damage, a healthcare provider may suggest further interventions or physical therapy. Surgery is rarely required for simple sprains, but may be considered if there is a complete ligament tear or joint instability.