Effect of osteoarthritic knee flexion deformity correction by total knee arthroplasty on sagittal spinopelvic alignment in Indian population

Table 2 Table showing sub-group analysis between group A and group B

No.	Variable	Group A, n = 15			Group B, n = 17
		Pre-op, median (IQR)	Post-op, median (IQR)	P value	Pre-op, median (IQR)	Post-op, median (IQR)	P value
1	PT	14.9 (11.1-20.8)	14 (7.2-20.4)	0.35	14.0 (9.4-18.2)	14.4 (12.2-17)	0.540
2	PI	45.3 (43.6-54.6)	51.6 (44-6-61.6)	0.124	48.6 (44.2-56.3)	48.3 (42-55.7)	0.603
3	SS	35.2 (29.5-39.5)	37.7 (30.6-42.3)	0.413	36.9 (26.7-41.8)	35.1 (26.5-40.6)	0.890
4	LL	-46.4 (-49.7 to -43.8)	-48.5 (-55.6 to -42.5)	0.639	-47.8 (-56 to -40.6)	-47.5 (-52.5 to -38.5)	0.579
5	SVA	42.9 (-36.6-78.7)	63.7 (28.2-78.1)	0.107	50.1 (17.4-79.0)	28.2 (18.9-78.0)	0.747

LL: Lumbar lordosis; PI: Pelvic incidence; PT: Pelvic tilt; SS: Sacral slope; SVA: Sagittal vertical axis.