The effect of patellar facet angle on patellofemoral alignment and arthritis progression in posterior-stabilized total knee arthroplasty without patellar resurfacing

Table 3 Postoperative radiologic and clinical outcomes

	Group A	Group B	p value
Radiologic
HKA angle (°)	179.2 ± 1.6	179.2 ± 1.3	0.870
Insall-Salvati ratio	1.1 ± 0.2	1.1 ± 0.1	0.866
Patellar tilt angle (°)	9.0 ± 6.4	11.9 ± 10.2	0.147
Patellar displacement (mm)^a	0.9 ± 3.7	0.3 ± 3.6	0.511
Progression of osteosclerosis (n)^b	22 (30.6%)	13 (40.6%)	0.371
Clinical
KSKS	83.5 ± 12.1	86.3 ± 11.4	0.304
KSFS	81.3 ± 9.7	82.7 ± 8.7	0.505
Feller score	25.1 ± 4.1	25.5 ± 3.4	0.632
Kujala score	77.2 ± 10.7	75.6 ± 12.2	0.551
ROM (°)	127.9 ± 9.9	128.4 ± 9.4	0.844

HKA hip-knee-ankle, KL Kellgren-Lawrence, KSFS Knee Society function score, KSKS Knee Society knee score, ROM range of motion
^a A negative value means medial displacement and a positive value means lateral displacement
^b Evaluated at the patellar central ridge

ISSN: 2234-2451