Mid-term outcomes of microfragmented adipose tissue plus arthroscopic surgery for knee osteoarthritis: A randomized, active-control, multicenter clinical trial

Table 1 Baseline characteristics of the patients

Characteristics	MFAT group	Control group	P value
No. of knees	146	146
Age, yr	56.4 ± 10.6	54.8 ± 10.1	0.183
Sex, n (%)			0.455
Female	95 (65.1)	101 (69.2)
Male	51 (34.9)	45 (30.8)
BMI, kg/m2	22.6 ± 3.4	23.1 ± 3.1	0.246
Kellgren-Lawrence grade, n (%)			0.833
2	80 (54.8)	93 (63.7)
3	66 (45.2)	53 (36.3)
Osteoarthritis site, n (%)			0.815
Left	70 (47.9)	72 (49.3)
Right	76 (52.1)	74 (50.7)
VAS pain	5.3 ± 1.4	5.2 ± 1.3	0.637
WOMAC score
Pain 0-20	9.8 ± 2.7	9.5 ± 2.6	0.264
Stiffness 0-8	2.3 ± 1.4	2.2 ± 1.3	0.519
Function 0-68	35.3 ± 8.4	33.6 ± 10.2	0.115
Total 0-96	47.5 ± 9.6	45.3 ± 11.0	0.071
Lequesne index	10.7 ± 2.8	10.3 ± 2.6	0.215
WORMS	59.1 ± 9.2	60.8 ± 7.0	0.648

WORMS: Whole-Organ Magnetic Resonance Imaging Score; VAS: Visual analog scale; BMI: Body mass index; MFAT: Microfragmented adipose tissue.