Table 1.
Relation of step length quintiles to prevalent MRI-detected structural damage in subregions of the PFJ among females
| Any cartilage damage | ||||
|---|---|---|---|---|
|
| ||||
| Step Length (Range) |
Prevalence | Crude OR | Adjusted OR* | Adjusted OR* in knees without pain |
| Quintile 5 | 229/518 | 0.60 | 0.62 | 0.50 |
| (68.78-83.30) | (44.2) | (0.45, 0.82) | (043, 0.88) | (0.32, 0.77) |
| Quintile 4 | 259/518 | 0.76 | 0.77 | 0.66 |
| (64.72-68.77) | (50.0) | (0.56, 1.0) | (0.56, 1.1) | (0.44, 1.0) |
| Quintile 3 | 271/520 | 0.83 | 0.85 | 0.71 |
| (61.44-64.71) | (52.1) | (0.61, 1.1) | (0.62. 1.2) | (0.48, 1.1) |
| Quintile 2 | 275/522 | 0.85 | 0.80 | 0.59 |
| (57.41-61.43) | (52.7) | (0.62, 1.2) | (0.58, 1.1) | (0.38, 0.91) |
| Quintile 1 | 293/516 | 1.0 | 1.0 | 1.0 |
| (35.45-57.40) | (56.8) | (Reference) | (Reference) | (Reference) |
| p trend=0.001 | p trend=0.01 | p trend=0.007 | ||
|
| ||||
| Full-thickness cartilage damage | ||||
|
| ||||
| Quintile 5 | 73/518 | 0.57 | 0.76 | 0.58 |
| (68.78-83.30) | (14.1) | (0.37, 0.87) | (0.47, 1.2) | (0.32, 1.1) |
| Quintile 4 | 65/518 | 0.49 | 0.55 | 0.50 |
| (64.72-68.77) | (12.6) | (0.32, 0.75) | (0.36, 0.86) | (0.28, 0.89) |
| Quintile 3 | 74/520 | 0.57 | 0.66 | 0.66 |
| (61.44-64.71) | (14.2) | (0.38, 0.87) | (0.43, 1.0) | (0.38, 1.2) |
| Quintile 2 | 79/522 | 0.61 | 0.65 | 0.55 |
| (57.41-61.43) | (15.1) | (0.41, 0.93) | (0.42, 1.0) | (0.31, 0.98) |
| Quintile 1 | 116/516 | 1.0 | 1.0 | 1.0 |
| (35.45-57.40) | (22.5) | (Reference) | (Reference) | (Reference) |
| p trend= 0.006 | p trend=0.14 | p trend=0.07 | ||
|
| ||||
| Any BML | ||||
|
| ||||
| Quintile 5 | 117/515 | 0.61 | 0.59 | 0.50 |
| (68.78-83.30) | (22.7) | (0.44, 0.86) | (0.40, 0.87) | (0.32, 0.80) |
| Quintile 4 | 140/520 | 0.77 | 0.70 | 0.60 |
| (64.72-68.77) | (26.9) | (0.55, 1.1) | (0.50, 0.99) | (0.39, 0.93) |
| Quintile 3 | 163/520 | 0.95 | 0.93 | 0.77 |
| (61.44-64.71) | (31.4) | (0.70, 1.3) | (0.68, 1.3) | (0.51, 1.2) |
| Quintile 2 | 156/524 | 0.88 | 0.85 | 0.78 |
| (57.41-61.43) | (29.8) | (0.64, 1.2) | (0.61, 1.2) | (0.51, 1.2) |
| Quintile 1 | 168/518 | 1.0 | 1.0 | 1.0 |
| (35.45-57.40) | (32.4) | (Reference) | (Reference) | (Reference) |
| p trend=0.007 | p trend= 0.01 | p trend= 0.01 | ||
|
| ||||
| BMLs >1 | ||||
|
| ||||
| Quintile 5 | 36/515 | 0.83 | 0.83 | 0.49 |
| (68.78-83.30) | (7.0) | (0.49, 1.4) | (0.48, 1.5) | (0.25, 0.97) |
| Quintile 4 | 37/520 | 0.85 | 0.77 | 0.48 |
| (64.72-68.77) | (7.1) | (0.50, 1.4) | (0.45, 1.3) | (0.24, 0.94) |
| Quintile 3 | 51/520 | 1.2 | 1.2 | 1.0 |
| (61.44-64.71) | (9.8) | (0.74, 1.9) | (0.73, 2.0) | (0.55, 1.8) |
| Quintile 2 | 38/524 | 0.86 | 0.84 | 0.63 |
| (57.41-61.43) | (7.3) | (0.52, 1.4) | (0.49, 1.4) | (0.33, 1.2) |
| Quintile 1 | 43/518 | 1.0 | 1.0 | 1.0 |
| (35.45-57.40) | (8.3) | (Reference) | (Reference) | (Reference) |
| p trend=0.4 | p trend=0.4 | p trend=0.12 | ||
*
Adjusted for age, BMI, leg length and tibiofemoral joint structural damage