Intra-articular Osteochondroma: A case Report.

Osteochondromas usually arise from the metaphyseal region of the growing skeleton. They usually develop in relation to the periosteum, and occur around the growth plate of long bones, especially the knee. The tumor usually stops to grow with closure of the growth plate. Extraskeletal cartilaginous tumors are uncommon. These tumors can arise at unusual anatomic site. Intra-articular osteochondromas are rare in older individuals. In joints with a large capsular space, such as the patellofemoral joint, osteochondromas can remain intra-articular [3]. Clinical-pathologic and radiological correlation helps to clarify the nature of the lesion. Complete local surgical excision is the management of choice. We report a patient with an intra-articular osteochondroma in the anterior portion of the knee joint. The tumor caused pain and swelling in the joint and affected knee motion.