Table 2. Characteristics of PCL-injured patients with and without reconstruction.

Cruciage ligament reconstruction	Total		With		Without		P
Variables	n	%	n	%	n	%
Total	4,169		2,694	64.62	1,475	35.38
Sex							0.593
Male	2,953	70.83	1,916	71.12	1,037	70.31
Female	1,216	29.17	778	28.88	438	29.69
Age (years)	32.15±12.65		31.26±11.90		33.79±13.78		<0.001
Age group (years)							<0.001
18–24	1,763	42.29	1,159	43.02	604	40.95
25–49	1,917	45.98	1,275	47.33	642	43.53
≥50	489	11.73	260	9.65	229	15.53
Poor prognosisa							<0.001
Without	4,008	96.14	2,621	97.29	1,387	94.03
With	161	3.86	73	2.71	88	5.97
Meniscus tear							<0.001
Without	4,122	98.87	2,683	99.59	1,439	97.56
With	47	1.13	11	0.41	36	2.44
Osteoarthritis							0.036
Without	4,056	97.29	2,632	97.7	1,424	96.54
With	113	2.71	62	2.3	51	3.46
Total knee replacement							<0.001
Without	4,131	99.09	2,681	99.52	1,450	98.31
With	38	0.91	13	0.48	25	1.69

a. Poor prognosis include meniscus tear, osteoarthritis and total knee replacement.