title: Planning an intertrochanteric femoral osteotomy.
abstract: A simple formula for calculating the displacement necessary to keep the hip-knee-ankle axis normal after intertrochanteric osteotomy is presented.
mesh_terms: D000843:Ankle Joint / Q000502:physiology; D001696:Biomechanical Phenomena; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery*; D006621:Hip Joint / Q000502:physiology; D006801:Humans; D007719:Knee Joint / Q000502:physiology; D008433:Mathematics; D010027:Osteotomy / Q000379:methods / Q000592:standards*; D011859:Radiography