Kinesiology after McKee-Farrar total hip replacement. A two-year follow-up of one hundred cases

Measurements of functional performance were made before and at six and twenty-four months after 100 McKee-Farrar total hip replacements in eighty-three patients. The measurements included: range of motion of the hip, hip-muscle torque, weight-bearing activity during standing, forces applied to canes or crutches, and multiple components of walking performance. In the absence of serious complications, most patients had improvement in most components of function, with greater gains occurring during the first six months and lesser but continued gains between the sixth and twenty-fourth postoperative months. Patients with serious operative complications, postoperative infections, or component loosening showed declines in almost every component of function tested.