Knee locking caused by osteochondroma of the proximal tibia adjacent to the pes anserinus: A case report

Figure 1 Preoperative plain radiographs of the left knee. A and B: Plain anteroposterior (A) and lateral (B) radiographs revealed a bony protuberance on the medial side of the patient’s proximal tibia; C and D: Plain anteroposterior (C) and lateral (D) radiographs revealed that osteochondroma was sufficiently resected at immediately after surgery; E and F: Plain anteroposterior (E) and lateral (F) radiographs revealed no recurrence of osteochondroma at one year after surgery.