Table 2 Association of measurements for trochlear morphology and patellofemoral joint alignment in quartiles with SHFP edema at baseline

Trochlear anatomy

 Trochlear depth

  Range (mm)

3.01–5.37

5.38–6.01

6.02–7.00

7.01–12.21

  Odds ratio^a

5.06 (1.21–9.27)

1.27 (0.27–5.97)

0.68 (0.12–3.73)

1.00 (REF)

0.002

 Trochlear sulcus angle

  Range (degrees)

120.21–130.52

130.53–134.65

134.66–139.21

139.22–159.21

  Odds ratio^a

(REF)

1.53 (0.37–6.49)

1.84 (0.46–5.35)

2.37 (0.87–7.02)

0.110

 Trochlear angle

  Range (degrees)

0.07–1.99

2.00–3.55

3.56–5.65

5.65–8.69

  Odds ratio^a

1.00 (0.28–3.61)

1.17 (0.34–4.06)

0.58 (0.15–2.35)

1.00 (REF)

0.886

 Lateral trochlear inclination

  Range (degrees)

10.02–19.98

19.99–22.03

22.04–25.00

25.01–38.21

  Odds ratio^a

3.57 (1.71–6.78)

3.12 (0.89–6.10)

2.40 (0.43–13.20)

1.00 (REF)

0.061

 Medial trochlear inclination

  Range (degrees)

9.19–20.32

20.33–24.01

24.02–27.53

27.54–33.67

  Odds ratio^a

1.00 (REF)

0.64 (0.01–0.54)

0.35 (0.10–1.16)

0.65 (0.20–2.14)

0.241

 TT-TG

  Range (mm)

0.80–4.21

4.22–6.11

6.12–8.11

8.12–13.00

  Odds ratio^a

1.00 (REF)

0.69 (0.14–3.41)

1.57 (0.39–5.32)

2.34 (0.91–7.64)

0.423

Patella Anatomy

 Patella tilt

  Range (degrees)

0.11–2.33

2.34–5.31

5.32–8.16

8.17–22.21

  Odds ratio^a

1.00 (REF)

2.01 (0.51–7.89)

2.19 (0.57–8.35)

1.00 (0.22–4.49)

0.368

 Insall‒Salvati ratio

  Range

0.79–1.04

1.05–1.14

1.15–1.26

1.27–1.53

  Odds ratio^a

1.00 (REF)

3.24 (0.32–7.22)

6.14 (0.67–9.48)

9.34 (4.02–11.23)

 < 0.001

 PL-T

  Range (mm)

2.00–5.43

5.44–6.52

6.53–8.15

8.16–11.00

  Odds ratio^a

7.69 (3.22–9.81)

5.34 (0.69–7.68)

2.45 (1.12–4.32)

1.00 (REF)

 < 0.001