Comparison of the regeneration of cartilage and the clinical outcomes after the open wedge high tibial osteotomy with or without microfracture: a retrospective case control study

Table 5 Regression analysis of clinical scores

Univariate regression analysis	KS knee	KS function	WOMAC pain	WOMAC stiffness	WOMAC function	WOMAC total
Age	0.809	0.539	0.549	0.962	0.585	0.639
BMI	0.476	0.204	0.207	0.776	0.277	0.188
Sex	0.398	0.597	0.075	0.259	0.877	0.972
Duration of symptom	0.906	0.599	0.07	0.455	0.751	0.629
Site of microfracture	0.636	0.514	0.118	0.349	0.788	0.765
Size of microfracture	0.244	0.729	0.568	0.300	0.629	0.804
Preoperative HKA angle	0.982	0.95	0.447	0.818	0.204	0.27
Postoperative HKA angle	0.003	0.002	< 0.001	0.52	0.053	0.006
Preoperative WBL ratio	0.873	0.903	0.183	0.828	0.093	0.106
Postoperative WBL ratio	< 0.001	< 0.001	< 0.001	0.396	0.089	0.009
Preoperative JLCA	0.069	0.057	0.677	0.703	0.926	0.919
Postoperative JLCA	0.031	0.006	0.002	0.73	0.122	0.077
Preoperative Ahlbäck grade	0.495	0.356	0.607	0.726	0.284	0.28
Postoperative Ahlbäck grade	0.042	0.073	0.089	0.964	0.526	0.382
Cartilage healing of MFC	0.001	0.001	< 0.001	0.443	0.296	0.098
Cartilage healing of MTP	0.004	0.002	0.002	0.326	0.485	0.894
Multivariate regression analysis	KS knee	KS function	WOMAC pain	WOMAC total
Postoperative HKA angel	0.126	0.327	0.754	0.086
Postoperative WBL ratio	0.010	0.06	0.045	0.892
Postoperative JLCA	0.652	0.635	0.806
Postoperative Ahlbäck grade	0.654
Cartilage healing of MFC	0.055	0.184	0.089
Cartilage healing of MTP	0.582	0.337	0.686

HKA hip-knee-ankle, WBL weight bearing line, JLCA joint line convergence angle, MFC medial femoral condyle, MTP medial tibial plateau, KS Knee Society, WOMAC Western Ontario and McMaster Universities

ISSN: 1471-2474