Table 3 Radiologic outcomes after the 2-year follow-up period^a

CDI

 Preoperative

1.1 ± 0.3

1.1 ± 0.3

n.s.

 Postoperative

1.0 ± 0.4

1.0 ± 0.3

n.s.

 p Value

n.s.

n.s.

Patellar tilt angle, °

 Preoperative

17.4 ± 5.1

18.9 ± 7.5

n.s.

 Postoperative

11.7 ± 4.1

11.8 ± 3.6

n.s.

 p Value

< 0.01

< 0.01

PFOA^b, n

 Preoperative

  Gr 0 / 1 / 2 / 3 or 4

27 / 5 / 0 / 0

19 / 5 / 1 / 0

n.s.

 Postoperative

  Gr 0 / 1 / 2 / 3 or 4

25 / 6 / 1 / 0

16 / 8 / 1 / 0

n.s.

 p Value

n.s.

n.s.

PFOA progression, n

3

3

n.s.