S66.320

Clinical Causes: Accidental cuts from sharp objects such as knives, glass, or metal tools. Workplace injuries involving machinery or moving blades. Falls that result in the hand striking a sharp or pointed object. Animal bites that puncture the skin and cause deep lacerations. Sports injuries involving contact or equipment that can cause a cut to the finger.

Key Symptoms: Pain, especially when attempting to move the finger. Swelling and bruising around the injured area. Visible cut or tear in the skin on the back of the finger or wrist. Inability to fully extend or straighten the finger. Tenderness to touch around the injury. Possible bleeding from the laceration. Decreased strength or difficulty performing movements involving the finger.

Diagnosis Path: Diagnosis typically involves a physical examination by a healthcare professional, who will assess the extent of the injury and check for damage to the tendons and surrounding tissues. In some cases, imaging tests such as X-rays may be ordered to rule out fractures or other bone injuries. The healthcare provider will evaluate the functionality of the finger, including the ability to extend the finger fully, to determine the severity of the injury.

Treatment Protocols: Treatment for a laceration of the extensor muscles, fascia, and tendons generally includes several steps: - **Initial Care:** Proper cleaning of the wound to prevent infection, often performed in a clinical setting. - **Suturing:** Closing the cut with stitches to promote healing and minimize scarring. - **Repair of Tendons:** In cases where tendons are severed or severely damaged, surgical repair may be necessary to restore function. - **Immobilization:** Use of splints or bandages to keep the finger and hand immobilized during healing. - **Antibiotics:** Prescribed to prevent or treat infection, especially if the wound is contaminated. - **Physical Therapy:** Once healing has progressed, therapy may be recommended to regain strength, flexibility, and movement of the finger. Complete recovery depends on the injury's severity and the timeliness of treatment, with some cases requiring additional interventions such as reconstructive surgery.