Lee OS, et al. - Postoperative simple radiography and high-resolution computed tomography (CT) were compared for their efficacy in diagnosing lateral hinge fracture (LHF) in open wedge high tibial osteotomy (OWHTO) for isolated medial compartment osteoarthritis of the knee joint. This work also entails exploration of affecting factors of LHF and investigation for the suitability of generally recommended postoperative rehabilitation protocols according to the type of LHF. With higher detection rate (24.5%) of LHF, a further assessment with immediate CT scanning vs simple radiographs (16%) was found to be highly valuable immediately after all OWHTO. In the LHF group vs in the non-LHF group, steeper coronal osteotomy slope and larger opening gap were observed. Overall, conservative management of LHF was recommended to prevent postoperative correction loss.