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What is the Dorr classification of the femoral bone?

Developed in 1993, the Dorr classification is a method for evaluating the quality and morphology of the proximal femoral bone, which is a key factor in planning and determining the success of total hip arthroplasty (THA). It categorizes the femur into three distinct types—A, B, and C—based on radiographic evidence of cortical thickness, canal shape, and overall bone density. This classification system assists surgeons in selecting the most appropriate femoral implant and fixation method for each patient, mitigating risks and improving outcomes.