Table 3 Association of measurements for trochlear morphology and patellofemoral joint alignment in quartiles with SHFP edema at the 48-month follow-up

Trochlear anatomy

 Trochlear depth

  Range (mm)

3.52–6.58

6.59–8.12

8.13–9.61

9.62–12.00

  Odds ratio^a

5.95 (1.51–9.45)

1.45 (0.32–6.46)

1.23 (0.65–3.07)

1.00 (REF)

0.042

 Trochlear sulcus angle

  Range (degrees)

93.24–115.21

115.22–120.41

120.42–125.56

125.57–133.52

  Odds ratio^a

1.00 (REF)

1.55 (0.47–3.06)

1.64 (0.45–5.22)

4.19 (1.3–9.23)

0.035

 Trochlear angle

  Range (degrees)

0.03–1.97

1.98–3.58

3.59–5.31

5.32–9.74

  Odds ratio^a

1.82 (0.24–2.80)

2.67 (0.89–7.96)

1.00 (0.30–3.29)

1.00 (REF)

0.634

 Lateral trochlear inclination

  Range (degrees)

17.41–25.60

25.61–29.44

29.45–34.91

34.92–49.00

  Odds ratio^a

3.38 (0.97–11.77)

3.08 (0.82–11.53)

2.48 (0.65–9.37)

1.00 (REF)

0.018

 Medial trochlear inclination

  Range (degrees)

15.02–27.91

27.92–31.03

31.04–34.87

34.88–44.31

  Odds ratio^a

1.00 (REF)

0.56 (0.19–1.67)

0.58 (0.19–1.75)

0.73 (0.25–2.13)

0.128

 TT-TG

  Range (mm)

1.52–7.76

7.77–8.53

8.54–10.76

10.77–15.23

  Odds ratio^a

1.00 (REF)

1.76 (0.55–5.62)

1.81 (0.65–5.05)

1.39 (0.45–4.34)

0.578

Patella Anatomy

 Patella tilt

  Range (degrees)

1.23–5.05

5.06–10.23

10.24–15.87

15.88–28.97

  Odds ratio^a

1.00 (REF)

0.89 (0.26–2.99)

2.60 (0.88–7.68)

2.00 (0.61–6.55)

0.140

 Insall‒Salvati ratio

  Range (degrees)

0.67–1.10

1.11–1.24

1.25–1.36

1.37–1.56

  Odds ratio^a

1.00 (REF)

2.20 (0.62–7.85)

2.64 (0.76–9.19)

5.43 (1.68–10.63)

0.002

 PL-T

  Range (mm)

2.23–5.32

5.33–6.74

6.75–8.90

8.91–14.24

  Odds ratio^a

6.50 (1.96–9.60)

2.71 (0.62–7.92)

0.43 (0.73–2.56)

1.00 (REF)

 < 0.001