Table 4.

SF-36 results: Connection of the preoperative quality of life (MCS) to the postoperative values of the clinical scores (18 Months FU), and to the duration of incapacity for work (weeks)

Clinical Score (FU 18 months)	(1) Preoperative MCS < 50	(2) Preoperative MCS ≥ 50	T	df	p
IKDC	63.2 ± 20.4 (N = 44)	81.5 ± 13.9 (N = 41)	−4.778	83	<.001**
HSS	86.1 ± 14.8 (N = 44)	94.1 ± 10.3 (N = 42)	−2.904	84	.005*
Lysholm	77.6 ± 22.7 (N = 44)	89.7 ± 15.8 (N = 42)	−2.854	84	.005*
Lequesne	5.1 ± 4.8 (N = 43)	1.6 ± 2.9 (N = 42)	4.083	83	<.001**
Duration of incapacity for work	15.0 ± 12.8 (N = 39)	9.1 ± 4.8 (N = 39)	2.680	68	0.009*