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Magnetic Resonance Imaging in Patellofemoral Instability
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Table 2 (suite)
Trochlear Morphology (2
nd
Cut)
Trochlear Groove Depth 5.87 + 0.15 mm 4.06 + 0.37 mm
5.57 – 6.18
3.31 – 4.81
< .001
Roman Arch
24.25 + 0.42 mm 21.28 + 0.48 mm
23.42 – 25.08
20.30 – 22.25
< .001
Trochlear Groove
Thickness
37.75 + 0.65 mm 41.35 + 0.93 mm
36.46 – 39.04
39.46 – 43.24
.002
% of Epicondylar Width
0.47 ± 0.01
0.57 ± 0.01
0.46 – 0.49
0.56 – 0.58
< .001
ETIT
1.40 + 0.02
1.97 + 0.07
1.36 – 1.44
1.83 – 2.12
< .001
Sulcus Angle
137.57° + 0.93
155.33° + 1.98
135.72 – 139.41
151.32 – 159.34
< .001
Lateral Condylar Height
65.63 + 0.52 mm 65.21 + 0.72 mm
64.59 - 66.67
63.76 – 66.66
.643
% of Epicondylar Width
LCH
0.81 ± 0.01
0.88 ± 0.01
0.80 – 0.82
0.86 – 0.89
< .001
Biedert’s Central
Condylar Height
62.00 ± 0.55
62.63 ± 0.74
60.90 – 63.10
61.13 – 64.12
.508
% of Epicondylar Width
CCH
0.77 ± 0.00
0.84 ± 0.01
0.76 – 0.78
0.83 – 0.86
< .001
Medial Condylar Height
63.83 + 0.52 mm 62.02 + 0.73 mm
62.79 – 64.87
60.54 – 63.50
.048
% of Epicondylar Width
MCH
0.78 ± 0.00
0.83 ± 0.01
0.77 – 0.79
0.82 – 0.84
< .001
Lateral Trochlear
Inclination
21.74° + 0.52
15.95° + 0.85
20.71 – 22.77
14.24 – 17.66
< .001
Coronal Measurements
Varus-Valgus
5.45° ± 0.29
10.02° ± 0.53
4.87 – 6.03
8.94 – 11.10
< .001
Lateral Condylar Height
27.94 ± 0.36
26.48 ± 0.50
27.22 – 28.67
25.47 – 27.49
.022
Medial Condylar Height
34.23 ± 0.44
33.08 ± 0.55
33.36 – 35.10
31.97 – 34.19
.122
Patellar Station
Patellar Trochlear
Overlap
14.49 ± 1.52
11.91 ± 1.00
11.89 – 14.29
9.88 – 13.94
.297
Trochlear Bossing (AP)
3.64 ± 0.13
3.97 ± 0.31
3.38 – 3.91
3.35 – 4.60
.245
Insall-Salvati Ratio
1.08 + 0.02
1.26 + 0.03
1.04 – 1.12
1.20 – 1.33
< .001
Modified Insall-Salvati
Ratio
1.64 + 0.03
1.72 + 0.04
1.58 – 1.69
1.64 – 1.80
.085
Caton-Deschamps
Ratio
1.13 + 0.02
1.29 + 0.03
1.09 – 1.17
1.22 – 1.35
< .001
Morphology Ratio
0.76 + 0.01
0.79 + 0.01
0.74 – 0.78
0.76 – 0.83
.029
Patellofemoral
Contacting Surface Ratio
0.45 + 0.05
0.37 + 0.03
0.36 – 0.54
0.30 – 0.43
.240