Question

what is the most common location of synovial chondromatosis?
ankle
knee
shoulder
hip

Explanation:

Synovial chondromatosis is most frequently seen in the knee joint. It is a benign disorder of synovium with metaplastic transformation of synovial mesenchymal cells into cartilage - forming cells. The knee has a large synovial cavity and complex joint motion, which may contribute to its higher prevalence.

Answer:

B. knee