Table 1.

Patient demographics.

Variable	Value
Number of hips	71
Number of patients	65
Number of women	54
Initial diagnosis (number of hips)
Osteoarthritis	63 (89%)
Osteonecrosis	7 (10%)
Rheumatoid arthritis	1 (1%)
Age at surgery (years)	60 (range, 33–83)
BMI (kg/m2)	24.9 (range, 17.5–39.0)
JOA hip score	48 (range, 22–72)
Follow-up period (years)	14 (range, 12–17)

BMI: body mass index; JOA: Japanese Orthopaedic Association.