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Objective: To investigate the short-term and mid-term effect of metal-on-metal hip resurfacing.Methods: From 2005-2 to 2010-12,38 patients(44 hips)of Orthopaedic Department of Affiliated Hospital of Nantong University received MoMHR.Among them,24 cases were male and 14 cases were female,with the age range from 21-65 and 44.2 on average.