Does mild flexion of the femoral prosthesis in total knee arthroplasty result in better early postoperative outcomes?

Table 5 Comparison of KSS functional score before and after surgery and between groups (\(\overline{\mathrm x}\) ± s)

	Anterior extension group	Mildly flexed group	Moderately flexed group	Excessively flexed group	F	P value
Number	21	41	32	19	-	-
Pre-op	46.19 ± 11.05	47.93 ± 15.53	45.47 ± 13.46	46.84 ± 14.45	0.196	0.899
2 weeks post-op	4.76 ± 6.22	3.17 ± 5.33	3.59 ± 4.96	2.63 ± 4.82	0.617	0.606
1 month post-op	36.67 ± 17.34	43.78 ± 16.80	41.72 ± 16.19	38.68 ± 17.39	0.976	0.407
3 months post-op	58.57 ± 10.62	64.02 ± 10.97	62.66 ± 10.70	60.26 ± 12.41	1.319	0.272
6 months post-op	70.48 ± 9.07	78.54 ± 10.14^*	74.06 ± 10.51	71.84 ± 13.15	3.388	0.021
1 year post-op	78.57 ± 10.14	84.88 ± 9.25^*	81.56 ± 9.87	78.42 ± 10.68	2.838	0.041
F	199.364	360.597	282.594	114.395	-	-
P value	0.000	0.000	0.000	0.000	-	-

KSS Knee society score
^*, ^a indicates statistically significant differences between two groups at the same time point (P < 0.05)
At 6 months postoperatively, ^*P = 0.006 compared to the anterior extension group and P = 0.025 compared to the excessively flexed group
At 1 year postoperatively, ^*P = 0.019 compared to the anterior extension group and P = 0.020 compared to the excessively flexed group

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