M12.272

Clinical Causes: Unknown exact cause, but possibly related to a benign proliferative process involving the synovial membrane. Previous injury or trauma may contribute to the development of PVNS. Genetic factors may play a role, as some cases show chromosomal abnormalities. Chronic inflammation may also be associated with the condition.

Key Symptoms: Persistent joint pain, especially during movement or weight-bearing activities. Swelling around the ankle and foot area. Reduced range of motion in the affected joints. A sensation of warmth or stiffness in the ankle and foot. Possible joint locking or catching due to loose tissue or cysts. Gradual decrease in joint function if left untreated.

Diagnosis Path: Physical examination to identify swelling, tenderness, and range of motion limitations. Imaging studies such as magnetic resonance imaging (MRI), which is particularly helpful in visualizing soft tissue changes and identifying pigmented areas characteristic of PVNS. X-rays may be used to rule out other conditions but are less sensitive for PVNS. Arthroscopy, a minimally invasive procedure, can be both diagnostic and therapeutic. During arthroscopy, a small camera is inserted into the joint to visualize the synovial tissue directly. Biopsy of the synovial tissue can confirm the diagnosis by examining tissue samples microscopically.

Treatment Protocols: Surgical synovectomy, which involves removing the proliferative synovial tissue, is considered the primary treatment. Open or arthroscopic techniques can be used based on the extent of the disease. In some cases, adjuvant therapies like radiation may be recommended to reduce the risk of recurrence, especially in recurrent cases. Physical therapy post-surgery helps restore mobility and strengthen surrounding muscles. Medications are generally not effective for PVNS, but ongoing monitoring is important due to the risk of recurrence.