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High tibial osteotomy for medial-compartment knee osteoarthritis (OA) is an established biological knee reconstruction surgical procedure. In open- and closed-wedge high tibial osteotomy, the angulation correction axes are away from the center of rotation and angulation. This results in translation deformity, which alters the orientation of the adjacent joint and the length of the limb. In the present study, we combined the distal tibial tuberosity focal dome osteotomy centered on the center of rotation and angulation with the longitudinal condylar osteotomy (focal dome condylar osteotomy) for knee OA. The advantages of this procedure are as follows: physiological orientation of adjacent joint is achieved; limb length is maintained; joint stabilization in the coronal plane is achieved; patella infra is prevented; sufficient bone contact between the medial and posterior cortex is achieved; early weight-bearing walking is possible; and fibular osteotomy is not required. This study describes the details of the surgical procedure, including our compass cutter for accurate dome osteotomy and the postoperative rehabilitation program for patients with knee OA and moderate-to-severe varus deformity.

arthroscopy techniques

Distal Tibial Tuberosity Focal Dome Osteotomy Combined With Intra-Articular Condylar Osteotomy (Focal Dome Condylar Osteotomy) for Medial Osteoarthritis of the Knee Joint