Abstract
Synovial osteochondromatosis (SOC) is a rare benign neoplasm. It is caused by the metaplasia of the synovium into the bone. The knee, hip, elbow, shoulder, and ankle are the common sites. Our objective was to retrospectively assess the clinical and radiological features of a few cases of SOC resembling some rheumatological conditions and describe it along with a literature review. A retrospective analysis of the clinical and radiological features of a few cases of SOC mimicking some rheumatological conditions was performed. There were 4 cases: 3 adult men and a young boy. Three cases presented in the elbow and 1 case in the hip. There was a case mimicking osteoarthritis of the elbow in a young individual, another case presented like myositis ossificans of the elbow, and another case was similar to neuropathic arthritis of the elbow. The case in the hip presented as painful limping in the child. SOC can sometimes mimic various conditions affecting the synovial joints. A careful evaluation of the clinical and radiological features can be helpful in the correct diagnosis.