S66.2

Clinical Causes: Direct trauma or blow to the thumb or wrist Sudden stretching or overextension of the thumb Falls or accidents where the hand is impacted Repetitive hand movements in activities like sports, typing, or manual labor Sudden or awkward movements during sports or physical activities Overuse injuries from repetitive gripping or pinching

Key Symptoms: Pain localized around the thumb or wrist, especially during movement Swelling and tenderness along the dorsal side of the thumb Limited range of motion, making it difficult to straighten or bend the thumb Bruising or discoloration in the affected area Weakness in thumb movements, impairing grasp or pinching ability Possible deformity if the injury involves a tear or rupture Sensitivity to touch at the injury site

Diagnosis Path: Diagnosing an injury of this kind involves a comprehensive clinical evaluation. The healthcare provider will review the patient's medical history and ask about the mechanism of injury. Physical examination focuses on assessing pain, swelling, range of motion, and strength of the thumb. Imaging studies such as X-rays may be used to rule out fractured bones, while MRI scans can provide detailed images of soft tissue injuries, including tendons and fascia. Ultrasonography might also be employed to visualize the extent of tendon damage.

Treatment Protocols: Treatment strategies depend on the severity of the injury. Mild strains or overstretching may resolve with conservative measures such as rest, ice application, and over-the-counter pain relievers. Immobilization using splints or braces can help protect the damaged tissues and facilitate healing. Physical therapy may be recommended to restore strength and flexibility once initial pain subsides. More severe injuries, such as ruptures, might require surgical intervention to repair torn tendons or fascia. Post-operative care typically involves immobilization and a structured rehabilitation program to regain thumb function.