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Objective To investigate the safety and efficacy of anterolateral(AL)osteotomy for the treatment of lateral tibial plateau fractures merged with relatively simple and intact posterolateral(PL)corner displacement and screens applicable patients.Methods Totally,11 patients with lateral tibial plateau fractures involving the PL corner were included in this study.Of them,seven patients sustained their injuries from motor vehicle accidents(MVAs),three from sports and one from fall from height.All of them received open reduction and internal fixation through the AL approach.Operation time,incision length,range of motion(ROM),Hospital for Special Surgery(HSS)knee score,time of union and complications were retrospectively reviewed.Tibial plateau angle(TPA),lateral posterior slope angle(PSA)and articular step-off reduction after surgery were examined by a radiograph technique.