Table 4 |
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|
Association between patella alignment (fore groups) and adjusted means of lateral patellar osteophytes |
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| Measure |
Lateral patellar osteophytes |
p for trend |
||||
|
|
||||||
| Quartile... |
1 |
2 |
3 |
4 |
||
|
|
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| PLR |
No. of knees |
100 |
100 |
100 |
104 |
|
| Range of PLR |
0.66–0.87 |
0.88–0.98 |
0.98–1.12 |
1.13–1.71 |
||
| OR (95% CI) |
1.00 |
1.70 (1.01–2.86) |
1.23 (0.73–2.08) |
1.67 (0.98–2.84) |
Linear, 0.0138; U-shaped, 0.0943 |
|
| SA |
No. of knees |
102 |
104 |
98 |
100 |
|
| Range of SA |
98–113 |
114–119 |
120–124 |
125–155 |
||
| OR (95% CI) |
1.00 |
1.62 (0.97–2.71) |
1.83 (1.09–3.08) |
1.52 (0.91–2.55) |
Linear, 0.0804; U-shaped, 0.8875 |
|
| LPTA |
No. of knees |
104 |
102 |
88 |
108 |
|
| Range of LPTA |
-25 to 13 |
14–17 |
18–21 |
22–35 |
||
| OR (95% CI) |
1.00 |
0.35 (0.21–0.60) |
0.51 (0.30–0.88) |
0.29 (0.17–0.49) |
Linear, <0.0001; U-shaped, 0.1076 |
|
| BO |
No. of knees |
98 |
98 |
102 |
100 |
|
| Range of BO |
38.46–54.55 |
54.76–60.42 |
60.47–66.67 |
66.67–100 |
||
| OR (95% CI) |
1.00 |
0.92 (0.54–1.54) |
1.33 (0.79–2.25) |
3.07 (1.77–5.34) |
Linear, <0.0001; U-shaped, 0.2038 |
|
|
|
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|
Results are adjusted for age, sex and bone mass index. PLR, patellar length ratio; SA, sulcus angle; LPTA, lateral patellar tilt angle; BO, bisect offset; OR, odds ratio; CI, confidence interval. |
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|
Kalichman et al. Arthritis Research & Therapy 2007 9:R26 doi:10.1186/ar2138 |
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