Effect of modified Laprade technique on posterolateral ligament injury of knee

Table 1 Demographic data and clinical outcomes

Variable	Modified group (n = 21)	Control group (n = 30)	Statistic(T-value/χ²-value)	p-value
Gender(male/female)	(15/6)	(19/11)	0.36	0.55
Age (year)	39.27 ± 6.33	37.65 ± 9.03	0.71	0.48
Preoperative knee range of motion(°)	71.55 ± 9.56	73.31 ± 10.35	0.62	0.54
Knee range of motion(°) 1 month after operation	103.27 ± 9.11	101.26 ± 10.05	0.73	0.47
Comparison of knee joint activity before operation and 1 month after operation
Statistic (T-value/χ²-value)	12.08	10.79
p-value	< 0.01	< 0.01
Knee range of motion(°) 1 year after operation	117.56 ± 7.33	106.25 ± 9.19	4.69	< 0.01
Preoperative Lysholm score	45.96 ± 7.03	47.29 ± 9.33	0.55	0.58
Lysholm score 1 month after operation	80.73 ± 5.33	81.09 ± 6.05	0.22	0.83
Comparison of Lysholm score before operation and 1 month after operation
Statistic (T-value/χ²-value)	0.52	16.65
p-value	0.60	< 0.01
Lysholm score 1 year after operation	83.75 ± 6.27	79.52 ± 5.16	2.64	0.01
Preoperative Dial test
Knee flexion 30°	13.75 ± 1.03	13.96 ± 1.11	0.68	0.50
Knee flexion 90°	14.77 ± 1.63	15.05 ± 1.67	0.60	0.55
Dial test 1 month after operation
Knee flexion 30°	5.63 ± 1.05	5.71 ± 1.23	0.24	0.81
Knee flexion 90°	6.35 ± 1.33	6.27 ± 1.15	0.14	0.89
Dial test 1 year after operation
Knee flexion 30°	5.33 ± 1.16	5.23 ± 1.65	0.24	0.81
Knee flexion 90°	6.27 ± 1.58	6.15 ± 1.36	0.28	0.77

ISSN: 2047-783X