Acetabular size (mm) Height of patient, h (m) BMI of patient
(kg / m2)
Mass of patient m=h2×BMI (kg) Compressive force F=3mg(N)
46 1.460 20 42.63 1255
    25 53.29 1568
    30 63.95 1882
52 1.642 20 53.92 1587
    25 67.40 1984
    30 80.88 2380
58 1.825 20 66.61 1960
    25 83.27 2451
    30 99.92 2941
Table 1: Compressive force acting in the hip joint, calculated from body mass index (BMI). Subjects’ heights for each acetabular size were obtained from the work of Thompson ac co-investigators (2000).