S83.27

Clinical Causes: Sudden twisting or rotational movements during sports or physical activities Direct trauma or blow to the knee Sudden changes in direction while running or jumping Degenerative changes in the knee cartilage in older adults Sudden hyperextension or bending of the knee Repetitive stress or overuse of the knee joint

Key Symptoms: Pain localized on the lateral side of the knee, especially when twisting or rotating Swelling or inflammation around the knee joint A sensation of the knee locking or catching during movement Feeling of instability or the knee giving way Difficulty fully straightening or bending the knee Tenderness upon touch around the lateral meniscus area

Diagnosis Path: Diagnosing a complex tear of the lateral meniscus typically involves a combination of medical history and physical examination. The healthcare provider may perform specific tests that evaluate knee stability and range of motion, such as joint line tenderness or McMurray's test. Imaging studies are crucial for confirmation; magnetic resonance imaging (MRI) is the preferred method as it provides detailed images of soft tissues within the knee, including meniscal tears. Occasionally, arthroscopy may be used to directly visualize and assess the extent of the tear.

Treatment Protocols: Treatment approaches vary depending on the severity of the tear and the patient's activity level. Options include: - **Conservative Management:** Rest, ice, compression, and elevation (RICE), along with non-steroidal anti-inflammatory drugs (NSAIDs) for pain relief. Physical therapy aims to strengthen surrounding muscles and improve joint stability. - **Surgical Intervention:** If conservative treatments are ineffective or if the tear causes persistent symptoms, arthroscopic surgery may be recommended. This minimally invasive procedure involves repairing or removing the damaged meniscal tissue. The specific surgical approach depends on the tear's pattern and location. - **Postoperative Rehabilitation:** Follow-up physical therapy focuses on regaining knee strength, flexibility, and function. Return to sports or physical activities is guided by recovery progress and surgeon recommendations.