M66.322

Clinical Causes: Degenerative changes in tendons due to aging or repetitive stress Chronic conditions such as rheumatoid arthritis that weaken tendons Overuse injuries from repetitive gripping or grasping activities Underlying cuff or tendon diseases weakening the tendons Abrupt increase in activity levels or sudden forceful movements Previous injuries or surgeries weakening tendon structure Certain medications that may affect tendon health, such as corticosteroids

Key Symptoms: Sudden and severe pain at the site of rupture A feeling of a snap or tear in the affected area Swelling and tenderness along the inner side of the upper arm Difficulty flexing or bending the fingers or thumb Weakness in gripping objects Possible visible or palpable gap where the tendon has ruptured Reduced ability to perform fine motor tasks requiring finger flexion

Diagnosis Path: Diagnosis typically involves a detailed physical examination by a healthcare professional, assessing the strength and function of finger and thumb movements. Imaging studies such as ultrasound or magnetic resonance imaging (MRI) can confirm the extent and location of the tendon rupture, providing detailed visualization of the damaged tissue. These diagnostic tools are essential to rule out other injuries and plan appropriate treatment.

Treatment Protocols: Treatment options depend on the severity of the rupture and the patient’s overall health. Common approaches include: - **Conservative management**: Rest, ice, and immobilization with a splint or cast to allow the tendon to heal naturally, especially in partial tears or less active individuals. - **Surgical repair**: Tendon repair surgery is often recommended for complete ruptures, particularly in active individuals or when functional recovery is crucial. The procedure involves stitching the torn tendon ends to restore their continuity. - **Postoperative rehabilitation**: Following surgery, a structured program of physical therapy and controlled exercises helps restore strength, flexibility, and function. Early diagnosis and treatment are vital for optimal recovery and to prevent long-term dysfunction.