“…Meniscal lesions are the biggest cause of knee locking in clinical practice. The differential diagnosis includes, among other conditions, cruciate ligament tears, cysts in the cruciate ligaments, intra-articular free bodies (osteochondritis dissecans, acute osteochondral lesions, synovial osteochondromatosis and penetrating injuries), pigmented nodular synovitis and plica syndrome [1], [2], [7], [8], [9]…”