Table 2.

Clinical results

Parameter	Preoperative	Followup at 15.8 years	p value (Student’s two-tailed t test)
Harris hip score (points)	38 (range, 21–49)	94 (range, 71–100)	< 0.001
Excellent (90–100)	0	445 (89%)	–
Good (80–89)	0	43 (8.6%)	–
Fair (70–79)	75 (15%)	9 (1.8%)	–
Poor (< 70)	425 (85%)	3 (0.6%)	–
WOMAC score (points)	60 ± 11.3 (range, 46–75)	15 ± 6.7 (range, 5–29)	< 0.001
UCLA activity score (points)	2.9 (range, 1–4)	7.9 (range, 6–9)	< 0.001
Thigh pain	–	None	–
Clicking sound	–	45 (9%)	–
Squeaking sound	–	None	–