M23.02

Clinical Causes: Traumatic injury to the knee, such as twisting or sudden impact movements Degenerative changes associated with aging that weaken the meniscal tissue Repetitive stress or overuse of the knee joint Previous meniscal injuries or surgeries that predispose to cyst formation Biomechanical abnormalities leading to abnormal stress distribution in the knee

Key Symptoms: Knee pain, often localized to the posterior medial aspect Swelling around the knee joint A sensation of catching, locking, or giving way in the knee Reduced range of motion or stiffness, especially after activity Tenderness upon palpation in the area of the posterior horn of the medial meniscus

Diagnosis Path: The diagnosis of cystic meniscus typically involves a combination of clinical examination and imaging studies. Key diagnostic steps include: - Physical examination assessing knee stability, tenderness, and joint mobility - Magnetic Resonance Imaging (MRI): The most effective imaging modality to visualize cysts, meniscal tears, and associated degenerative changes - Arthroscopic evaluation: A minimally invasive procedure that allows direct visualization and potential treatment of the meniscal cyst and associated abnormalities

Treatment Protocols: Management of cystic meniscus often depends on the severity of symptoms and the extent of meniscal damage. Treatment options include: - Conservative approaches such as rest, ice, compression, and elevation (R.I.C.E.) - Physical therapy aimed at strengthening the muscles around the knee to improve stability - Medications like nonsteroidal anti-inflammatory drugs (NSAIDs) for pain relief - Arthroscopic surgery to remove or repair the damaged meniscal tissue and drain the cyst - Meniscectomy or meniscal repair procedures in cases of extensive damage Post-operative rehabilitation is vital to restore knee function and prevent further injuries.