Effect of Medial Closing Wedge Distal Femoral Osteotomy on Tibial Tuberosity–Trochlear Groove Distance in Patients With Genu Valgum According to Diagnosis (Lateral Osteoarthritis or Patellar Dislocation)

CWDFO effectively reduced the TT-TG distance regardless of the diagnosis. Preoperative TT-TG distance and osteotomy type were key determinants of this reduction. In cases with preoperative TT-TG distances >23.5 mm, TT-TG distance changes demonstrated greater variability, suggesting that radiographic outcomes may deviate from expected values. These findings highlight the need for careful postoperative assessments and consideration of additional procedures in select cases.