Table 2.
Femoral and Patellar Morphology Parameters
| Parameter | PF Pain | Controls | 95% CI | Cohen’s d | p value |
|---|---|---|---|---|---|
| Femoral Parameters | |||||
| Lateral Shaft Length (mm) | 17.9 ± 3.3 | 17.9 ± 4.0 | 2.3 | 0.00 | 0.999 |
| LTIe (°) | 26.7 ± 2.3 | 26.4 ± 4.2 | 2.2 | 0.08 | 0.808 |
| LTIt (°) | 21.9 ± 4.9 | 24.0 ± 4.9 | 3.2 | −0.42 | 0.190 |
| Sulcus Cartilage (mm) | 27.5 ± 2.6 | 26.2 ± 3.5 | 2.0 | 0.40 | 0.210 |
| Sulcus Depth (mm) | 6.6 ± 0.7 | 6.0 ± 1.1 | 0.6 | 0.66 | 0.043 |
| Trochlear Length Ratio | 1.4 ± 0.2 | 1.3 ± 0.2 | 0.0 | 0.50 | 0.390 |
| Trochlear Width (mm) | 32.0 ± 1.7 | 33.0 ± 1.8 | 1.1 | −0.56 | 0.086 |
| Patellar Parameters | |||||
| Lateral Patellar Width (mm) | 23.1 ± 2.4 | 21.4 ± 2.6 | 1.6 | 0.70 | 0.033 |
| Patellar Cartilage Length (mm) | 26.3 ± 3.5 | 24.6 ± 2.3 | 1.9 | 0.59 | 0.068 |
| Patellar Height Ratio | 1.1 ± 0.2 | 1.1 ± 0.2 | 0.1 | −0.45 | 0.171 |
| Patellar Width (mm) | 39.2 ± 2.8 | 36.8 ± 3.3 | 2.0 | 0.81 | 0.014 |
| Patellar-Femoral Width Ratio | 1.2 ± 0.1 | 1.1 ± 0.1 | 0.1 | 1.26 | <0.001 |
| Patellar-Trochlear Cartilage Overlap (mm) | 4.9 ± 1.6 | 5.0 ± 1.5 | 1.0 | −0.07 | 0.819 |
| Wiberg Angle (°) | 139.3 ± 4.8 | 139.3 ± 7.4 | 4.0 | 0.00 | 0.997 |
| Wiberg Index | 0.6 ± 0.0 | 0.6 ± 0.0 | 0.0 | 0.28 | 0.559 |
Data are reported as mean ± 1 SD. Effect size measured using Cohen’s d statistic12.
LTIe = lateral trochlear inclination, as measured in the axial image containing the epicondylar width; LTIt = lateral trochlear inclination, as measured in the axial image containing the most proximal-lateral aspect of sulcus groove.