There were 20 patients in this study (14 male and 6 female) with a mean age of 63.8 years (range 52–76). Nineteen patients were Caucasian, one African-American. The measurements were obtained at a mean of 10.8 years post-operation (range 5–14). For WOMAC (Western Ontario and McMaster University Osteoarthritis Index), a higher score indicates greater pain, stiffness, or difficulty. For the Harris Hip Scale, higher scores indicate better results. For SF-36 (short form 36 questionnaire) higher scores indicate better health. ADL, activities of daily living.