High tibial osteotomy with human umbilical cord blood-derived mesenchymal stem cells implantation for knee cartilage regeneration

Table 3 Clinical outcomes according to trochlear lesion

	Trochlear lesion (n = 73)	No trochlear lesion (n = 52)	P value1
IKDC
Preoperative	29.3 ± 7.3	28.5 ± 7.6	0.794
1 yr	56.7 ± 9.7	56.7 ± 9.7	0.960
2 yr	61.6 ± 10.7	61.4 ± 9.5	0.916
3 yr	64.7 ± 11	65.3 ± 11.4	0.493
WOMAC
Preoperative	44.8 ± 10.3	43.1 ± 11.1	0.288
1 yr	13.8 ± 7.5	13.2 ± 8.2	0.471
2 yr	10.7 ± 6.9	11.3 ± 8.5	0.958
3 yr	8.4 ± 6.4	8.4 ± 6.8	0.755
VAS
Preoperative	7.8 ± 1.2	7.3 ± 1.3	0.046
1 yr	2.6 ± 1.7	2.3 ± 1.6	0.331
2 yr	2.1 ± 1.5	2.0 ± 1.7	0.555
3 yr	1.6 ± 1.4	1.4 ± 1.6	0.203

Boldface indicates statistical significance (P < 0.05).

¹Mann-Whitney U test. IKDC: International Knee Documentation Committee; WOMAC: Western Ontario and McMaster Universities Osteoarthritis Index; VAS: Visual analog scales.