Table 5.

Pre- and postoperative kinematic results for the knee according to operations at this level, expressed as mean (SD) in degrees

Operation Parameter	Preop.	p-value a	1 year	p-value b	5 years	p-valuec	Normal material
Hamstrings lengthening and rectus femoris transfer (n = 16)
Min. knee flexion stance phase	37 (19)	0.001	15 (14)	0.8	14 (12)	< 0.001	2 (4)
Max. knee flexion swing phase	63 (13)	0.03	54 (7.6)	0.049	50 (7.3)	0.003	60 (5)
Knee ROM d	27 (12)	0.001	39 (12)	0.07	35 (11)	0.002	60 (7)
Timing of max. knee flexion e	82 (5.5)	0.04	79 (3.6)	0.9	79 (4.5)	0.04	72 (3)
No knee operation (n = 18)
Min. knee flexion stance phase	12 (15)	0.6	14 (13)	0.7	15 (12)	0.9
Max. knee flexion swing phase	51 (14)	0.1	56 (8.2)	0.008	51 (8.0)	0.1
Knee ROM d	39 (20)	0.4	42 (14)	0.001	36 (14)	0.2
Timing of max. knee flexion e	79 (5.7)	0.04	77 (5.5)	0.4	77 (5.6)	0.1

^a–c For abbreviations, see Table 3.

^d ROM: range of motion;

^e Timing of maximum knee flexion in swing (% of gait cycle).