Journal of Experimental Orthopaedics

Table 6 Results of isokinetic strength measurement of the operated hip

From: Comparison of postoperative isokinetic quadriceps and gluteal muscular strength after primary THA: is there an early benefit through enhanced recovery programs?

Peak torque		Non-ERAS (n = 12)	ERAS (n = 12)	Statistical difference
(Nm), mean ± SD				p-value
60°/s flexion	PRE-OP	38.63 ± 18.53	29.13 ± 17.51	0.21
	5 d POST-OP	17.98 ± 7.88	33.22 ± 15.45	*0.008*
	4 w POST-OP	30.35 ± 11.64	51.23 ± 21.55	*0.009*
60°/s extension	PRE-OP	40.22 ± 18.87	41.01 ± 29.67	0.94
	5 d POST-OP	21.88 ± 15.81	42.67 ± 21.51	*0.013*
	4 w POST-OP	41.49 ± 17.81	71.64 ± 33.97	*0.015*
30°/s abduction	PRE-OP	33.08 ± 18.92	19.06 ± 9.47	0.16
	5 d POST-OP	20.81 ± 11.36	25.19 ± 8.54	0.3
	4 w POST-OP	26.6 ± 11.63	38.65 ± 14.5	*0.035*
30°/s adduction	PRE-OP	25.42 ± 15.79	20.52 ± 14.45	0.48
	5 d POST-OP	16.13 ± 6.8	27.81 ± 11.64	*0.008*
	4 w POST-OP	24.72 ± 10.65	39.9 ± 17.77	*0.021*
Overall Work (J)
60°/s flexion	PRE-OP	144.51 ± 97.26	108.38 ± 85.25	0.34
	5 d POST-OP	36.11 ± 24.11	103.87 ± 57.12	*0.002*
	4 w POST-OP	101.11 ± 59.09	230.04 ± 116.05	*0.003*
60°/s extension	PRE-OP	179.43 ± 104.25	171.13 ± 157.67	0.99
	5 d POST-OP	55.76 ± 55.95	198.01 ± 144.21	*0.001*
	4 w POST-OP	161.94 ± 94.59	399.83 ± 222.76	*0.001*
30°/s abduction	PRE-OP	49.56 ± 43.71	21.13 ± 15.94	0.11
	5 d POST-OP	21.28 ± 14.14	35.28 ± 16.19	*0.034*
	4 w POST-OP	40.35 ± 21.47	70.83 ± 35.79	*0.019*
30°/s adduction	PRE-OP	39.18 ± 32.45	28.44 ± 29.44	0.24
	5 d POST-OP	17.72 ± 10.01	42.54 ± 20.36	*0.002*
	4 w POST-OP	36.85 ± 19.41	85.24 ± 51.03	*0.008*
Power (Watt)
60°/s flexion	PRE-OP	16.32 ± 9.78	13.44 ± 10	0.48
	5 d POST-OP	5.36 ± 3.3	12.5 ± 6.4	*0.002*
	4 w POST-OP	13.22 ± 6.31	23.76 ± 11.29	*0.012*
60°/s extension	PRE-OP	17.34 ± 10.38	18.8 ± 16.74	0.99
	5 d POST-OP	6.9 ± 6.07	21.22 ± 14.24	*0.003*
	4 w POST-OP	19.04 ± 9.32	38.46 ± 21.19	*0.002*
30°/s abduction	PRE-OP	7.06 ± 6.02	3.13 ± 2.12	0.11
	5 d POST-OP	3.69 ± 2.18	5.36 ± 2.39	0.09
	4 w POST-OP	5.71 ± 2.77	9.28 ± 4.33	*0.006*
30°/s adduction	PRE-OP	4.98 ± 4.19	3.93 ± 3.78	0.45
	5 d POST-OP	2.92 ± 1.36	6.08 ± 2.97	*0.004*
	4 w POST-OP	5.14 ± 2.25	10.64 ± 5.91	*0.009*
Variation coefficient
60°/s flexion	PRE-OP	27.77 ± 17.59	33.72 ± 26.97	0.53
	5 d POST-OP	41.55 ± 13.13	31.58 ± 15.58	0.1
	4 w POST-OP	19.81 ± 9.61	22.73 ± 10.66	0.49
60°/s extension	PRE-OP	23.33 ± 19.4	28.48 ± 25.37	0.93
	5 d POST-OP	24.83 ± 9.06	11.19 ± 5.86	< *0.001*
	4 w POST-OP	17.82 ± 10.32	10.49 ± 7.06	0.05
30°/s abduction	PRE-OP	27.56 ± 18.44	29.27 ± 19.02	0.89
	5 d POST-OP	28.28 ± 20.83	23.35 ± 10.41	0.93
	4 w POST-OP	17.86 ± 8	15.23 ± 6.66	0.99
30°/s adduction	PRE-OP	22.17 ± 13.81	18.38 ± 10.94	0.47
	5 d POST-OP	24.73 ± 20.57	13.78 ± 4.65	0.18
	4 w POST-OP	18.63 ± 10.32	10.98 ± 5.74	*0.045*
Active range of motion (°)
Flexion / Extension	PRE-OP	94.23 ± 19.29	83.89 ± 28.01	0.30
	5 d POST-OP	61.24 ± 16.64	88.06 ± 15.8	*0.001*
	4 w POST-OP	77.83 ± 13.1	106.21 ± 13.13	< *0.001*
Abduction / Adduction	PRE-OP	36.23 ± 7.74	27.53 ± 10.22	*0.028*
	5 d POST-OP	27.12 ± 4.62	33.72 ± 5.79	*0.005*
	4 w POST-OP	35.33 ± 6.02	40.46 ± 7.52	0.08

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