Table 1.

Pre- and Postoperative Hip Muscle Strength (Nm/kg)

Characteristic	Mean	95% CI	P Value	Hedges’s g
Quadriceps
Preoperative	2.70	2.48 to 2.92
3 months	2.74	2.55 to 2.92	.665	0.070
Change (%)	4	–5 to 13
6 months	2.91	2.69 to 3.12	.045	0.369
Change (%)	11	1 to 21
Hamstrings
Preoperative	1.48	1.34 to 1.63
3 months	1.39	1.27 to 1.51	.088	–0.263
Change (%)	–4	–11 to 3
6 months	1.58	1.45 to 1.72	.041	0.275
Change (%)	9	3 to 15
Extensors
Preoperative	2.10	1.89 to 2.32
3 months	2.18	1.93 to 2.44	.416	0.132
Change (%)	7	–5 to 19
6 months	2.39	2.15 to 2.63	.006	0.472
Change (%)	17	5 to 30
Flexors
Preoperative	1.83	1.68 to 1.99
3 months	1.79	1.64 to 1.94	.511	–0.109
Change (%)	0	–9 to 8
6 months	2.09	1.91 to 2.26	.003	0.586
Change (%)	17	6 to 28
Abductors
Preoperative	1.92	1.77 to 2.08
3 months	1.74	1.60 to 1.88	.009	–0.465
Change (%)	–7	–15 to 0
6 months	1.92	1.80 to 2.05	.992	0.002
Change (%)	4	–6 to 13
Adductors
Preoperative	1.74	1.59 to 1.90
3 months	1.84	1.68 to 1.99	.047	0.228
Change (%)	7	0 to 14
6 months	2.02	1.84 to 2.20	<0.001	0.621
Change (%)	18	9 to 26
Internal rotators
Preoperative	1.10	0.98 to 1.21
3 months	1.11	1.00 to 1.23	.738	0.055
Change (%)	3	–6 to 12
6 months	1.40	1.26 to 1.53	<0.001	0.896
Change (%)	32	18 to 46
External rotators
Preoperative	1.15	1.00 to 1.30
3 months	1.03	0.89 to 1.18	.040	–0.303
Change (%)	–7	–16 to 2
6 months	0.92	0.86 to 0.99	.002	–0.745
Change (%)	–13	–23 to –2

CI, confidence interval.

Bold P-values indicate statistically significant differences.