A comparison between physical therapy clinics with high and low rehabilitation volumes of patients with ACL reconstruction

Table 6 Muscle strength in the quadriceps and hamstrings muscle groups, first 12 months after ACL-reconstruction

Muscle test	Group	n	2 months			4 months			8 months			12 months
Muscle test	Group	n	LSI ± SD%	Pass, n (%)	p-value LSI/Pass	LSI ± SD%	Pass, n (%)	p-value LSI/Pass	LSI ± SD%	Pass, n (%)	p-value LSI/Pass	LSI ± SD%	Pass, n (%)	p-value LSI/Pass
Quadriceps strength	HV	338	70.5 ± 20.0	37 (10.9)	0.55/0.42	79.8 ± 15.7	113 (33.4)	0.95/0.05*	91.0 ± 13.9	201 (59.5)	0.33/1.00	93.8 ± 10.6	232 (68.6)	0.48/0.35
Quadriceps strength	LV	159	69.3 ± 17.5	13 (8.2)	0.55/0.42	79.7 ± 14.7	39 (24.5)	0.95/0.05*	89.5 ± 14.7	94 (59.1)	0.33/1.00	94.7 ± 11.1	116 (73.0)	0.48/0.35
Hamstrings strength	HV	338	83.3 ± 19.5	118 (34.9)	0.01*/0.76	92.9 ± 13.5	204 (60.4)	0.24/0.92	97.4 ± 12.9	253 (74.9)	0.38/0.83	97.8 ± 13.5	274 (81.1)	0.45/0.55
Hamstrings strength	LV	159	78.4 ± 21.0	53 (33.3)	0.01*/0.76	91.3 ± 12.7	95 (59.7)	0.24/0.92	96.2 ± 14.4	117 (73.6)	0.38/0.83	98.8 ± 11.7	125 (78.6)	0.45/0.55

LSI limb symmetry index, SD standard deviation, HV high-volume clinic, LV low-volume clinic, n number of patients, Pass = LSI ≥ 90%,
*Significant (p < 0.05) difference between high- and low-volume clinics
For categorical variables, n (%) is presented
For continuous variables, the mean ± SD is presented

ISSN: 1749-799X