M23.041

Clinical Causes: Degenerative changes due to aging, leading to tearing and cyst formation Trauma or injury to the knee, such as twisting or direct impact Repeated knee stress from activities like running or jumping Degeneration associated with osteoarthritis Previous meniscal injury or surgical interventions

Key Symptoms: Knee pain, especially during movement or weight-bearing activities Swelling or fluid accumulation around the knee joint A feeling of fullness or tightness in the knee Limited range of motion, such as difficulty fully straightening or bending the knee Intermittent locking or catching sensations during knee movement Tenderness along the lateral aspect of the knee

Diagnosis Path: Diagnosis typically involves a combination of clinical examination and imaging techniques. An orthopedic specialist may assess for tenderness, swelling, and joint stability. Magnetic Resonance Imaging (MRI) is the preferred method to visualize cysts, meniscal tears, and any associated joint damage. MRI provides detailed images of soft tissues, making it essential for confirming the presence of a cystic meniscus in the anterior horn of the lateral meniscus.

Treatment Protocols: Treatment options depend on the severity of symptoms and the size of the cyst. Approaches include: - Conservative management with rest, ice application, compression, and elevation (RICE). - Non-steroidal anti-inflammatory drugs (NSAIDs) to reduce pain and inflammation. - Physical therapy to strengthen muscles around the knee and improve stability. - Aspiration of the cyst under ultrasound guidance, if appropriate. - Arthroscopic surgery to remove the cyst and repair or trim the meniscus if necessary. This minimally invasive procedure aims to relieve symptoms and restore knee function. Following intervention, rehabilitation exercises are essential to recover mobility and strength. In some cases, especially with significant degeneration or multiple tears, more extensive surgical procedures may be considered.