S83.402

Clinical Causes: Sudden twisting or rotational movements of the knee, especially during sports activities like basketball, football, or skiing. Direct blow or impact to the side of the knee, often during contact sports or accidents. Falls that cause the knee to bend or twist unexpectedly. Rapid changes in direction while running or jumping. Overextension or hyperextension of the knee joint. Trauma resulting from vehicular accidents or falls from height.

Key Symptoms: Pain localized on the inner or outer side of the knee, depending on which collateral ligament is affected. Swelling around the knee joint. Tenderness when touching the affected area. Difficulty bearing weight or walking comfortably. A sensation of instability or giving way. Bruising around the knee in some cases. Limited range of motion due to pain or swelling.

Diagnosis Path: Diagnosis of a collateral ligament sprain typically involves a thorough physical examination by a healthcare professional. The doctor will evaluate the knee for swelling, tenderness, stability, and range of motion. They may perform specific tests, such as the valgus or varus stress test, to assess ligament integrity. Imaging studies, including X-rays, are usually used to rule out fractures or other bone injuries. Magnetic Resonance Imaging (MRI) may be recommended to provide detailed images of soft tissues, including ligaments, if the severity or nature of the injury is unclear.

Treatment Protocols: Rest: Limiting activities that put stress on the knee to prevent further injury. Ice: Applying ice packs to reduce swelling and alleviate pain, typically for 15-20 minutes every few hours during the initial days. Compression: Using elastic bandages or knee braces to support the joint and control swelling. Elevation: Keeping the leg elevated above heart level to decrease swelling. Medications: Over-the-counter pain relievers like acetaminophen or NSAIDs may be recommended to manage pain and inflammation. Physical therapy: Guided exercises to restore mobility, strengthen surrounding muscles, and improve stability. In severe cases: Surgical intervention might be considered if there is a complete tear or if conservative treatments fail to resolve symptoms. Gradual return to activities: As healing progresses, a structured program to safely resume normal activities and sports is essential.