S83.28

Clinical Causes: Sudden twisting or pivoting motions while the foot is planted on the ground Direct blow or trauma to the outer side of the knee Degenerative changes due to aging or repetitive stress Sudden twisting during sports that involve jumping or quick directional changes Overuse or repetitive knee stress from certain physical activities

Key Symptoms: Knee pain, especially along the outer side Swelling around the knee joint A feeling of instability or the knee giving way Pain during twisting or bending the knee Reduced range of motion Difficulty fully straightening or bending the knee Catch or lock sensation within the knee joint

Diagnosis Path: Diagnosis typically involves a thorough medical history and physical examination to assess knee stability, tenderness, and range of motion. Imaging tests such as MRI scans are essential for confirming a lateral meniscus tear, as they provide detailed images of the knee's soft tissues. In some cases, arthroscopy—a minimally invasive surgical procedure—may be used both to evaluate and treat the injury.

Treatment Protocols: Treatment options depend on the severity of the tear and the patient's activity level. They may include: - Rest and activity modification to reduce strain on the knee - Icing to decrease swelling and pain - Nonsteroidal anti-inflammatory drugs (NSAIDs) for relief of pain and inflammation - Physical therapy to strengthen surrounding muscles and improve knee stability - Supportive devices such as knee braces or crutches - Surgical intervention, which may involve meniscus repair or removal of the torn tissue via arthroscopy, especially in cases of complex or persistent tears Recovery times vary based on the injury's severity and the chosen treatment, with physical rehabilitation playing a vital role in restoring function.