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Table 3 PFP of the RPK phase and the post-LRR phase for the IT group

From: Internal rotational patellar resection and patella alta induced patellar maltracking in total knee arthroplasty: intraoperative measurement of the patellofemoral pressure

 

Lateral PFP (N)

Medial PFP (N)

 

RPK phase

Post-LRR phase

p value

RPK phase

Post-LRR phase

p value

Knee flexion angle

 0°

2.5 ± 2.1

2.2 ± 2.1

n.s.

3.2 ± 4.0

1.9 ± 2.0

n.s.

 90°

48.6 ± 23.0

33.3 ± 16.9

 < 0.001

5.3 ± 6.2

4.0 ± 4.2

n.s.

 120°

66.2 ± 19.1

46.1 ± 21.2

 < 0.001

7.6 ± 10.4

6.6 ± 6.1

n.s.

 135°

76.3 ± 22.5

59.9 ± 25.3

 < 0.001

10.2 ± 14.9

9.9 ± 9.2

n.s.

  1. Data are presented as mean ± standard deviation
  2. IT impaired patellar tracking, LRR lateral retinacular release, PFP patellofemoral pressure, RPK resurfaced patella and knee, n.s. not significant