Table 2.
Relation of step length quintiles to prevalent MRI-detected structural damage in subregions of the PFJ among males
| Any cartilage damage | ||||
|---|---|---|---|---|
|
| ||||
| Step Length (Range) |
Prevalence | Crude OR | Adjusted OR* | Adjusted OR* in knees without pain |
| Quintile 5 | 126/304 | 0.87 | 0.92 | 0.88 |
| (75.99-93.59) | (41.5) | (0.56, 1.4) | (0.56, 1.5) | (0.51, 1.6) |
| Quintile 4 | 124/298 | 0.88 | 0.97 | 0.95 |
| (72.25-75.98) | (41.6) | (0.57, 1.4) | (0.62, 1.5) | (0.58, 1.6) |
| Quintile 3 | 125/296 | 0.90 | 0.91 | 0.88 |
| (67.86-72.24) | (42.2) | (0.59, 1.4) | (0.59, 1.4) | (0.53, 1.5) |
| Quintile 2 | 126/298 | 0.90 | 0.95 | 0.88 |
| (62.87-67.85) | (42.3) | (0.58, 1.4) | (0.60, 1.5) | (0.51, 1.5) |
| Quintile 1 | 136/304 | 1.0 | 1.0 | 1.0 |
| (44.08-62.86) | (44.7) | (Reference) | (Reference) | (Reference) |
| p trend=0.5 | p trend=0.8 | p trend=0.8 | ||
|
| ||||
| Full-thickness cartilage damage | ||||
|
| ||||
| Quintile 5 | 36/304 | 1.2 | 1.4 | 1.2 |
| (75.99-93.59) | (11.4) | (0.62, 2.3) | (0.70, 2.8) | (0.54, 2.9) |
| Quintile 4 | 37/298 | 1.2 | 1.5 | 1.5 |
| (72.25-75.98) | (12.2) | (0.66, 2.4) | (0.75, 2.8) | (0.69, 3.3) |
| Quintile 3 | 31/296 | 1.0 | 1.1 | 1.2 |
| (67.86-72.24) | (8.5) | (0.56, 1.9) | (0.60, 2.0) | (0.57, 2.4) |
| Quintile 2 | 39/298 | 1.3 | 1.5 | 1.3 |
| (62.87-67.85) | (12.8) | (0.72, 2.4) | (0.80, 2.7) | (0.59, 2.8) |
| Quintile 1 | 31/304 | 1.0 | 1.0 | 1.0 |
| (44.08-62.86) | (9.8) | (Reference) | (Reference) | (Reference) |
| p trend= 0.7 | p trend=0.4 | p trend=0.5 | ||
|
| ||||
| Any BML | ||||
|
| ||||
| Quintile 5 | 65/304 | 0.85 | 0.84 | 0.71 |
| (75.99-93.59) | (21.4) | (0.53, 1.3) | (0.51, 1.4) | (0.39, 1.3) |
| Quintile 4 | 70/292 | 0.98 | 0.96 | 0.89 |
| (72.25-75.98) | (24.0) | (0.62, 1.5) | (0.60, 1.5) | (0.52, 1.5) |
| Quintile 3 | 63/286 | 0.88 | 0.83 | 0.77 |
| (67.86-72.24) | (22.0) | (0.57, 1.3) | (0.53, 1.3) | (0.45, 1.3) |
| Quintile 2 | 76/304 | 1.0 | 1.0 | 0.74 |
| (62.87-67.85) | (25.0) | (0.67, 1.6) | (0.65, 1.7) | (0.40, 1.4) |
| Quintile 1 | 73/300 | 1.0 | 1.0 | 1.0 |
| (44.08-62.86) | (24.3) | (Reference) | (Reference) | (Reference) |
| p trend=0.5 | p trend= 0.5 | p trend= 0.5 | ||
|
| ||||
| BML > 1 | ||||
|
| ||||
| Quintile 5 | 22/304 | 1.3 | 0.97 | 0.59 |
| (75.99-93.59) | (7.2) | (0.56, 3.0) | (0.40, 2.3) | (0.20, 1.7) |
| Quintile 4 | 26/292 | 1.6 | 1.3 | 1.1 |
| (72.25-75.98) | (8.9) | (0.79, 3.4) | (0.57, 2.9) | (0.43, 2.9) |
| Quintile 3 | 16/286 | 0.99 | 0.84 | 0.72 |
| (67.86-72.24) | (5.6) | (0.45, 2.2) | (0.37, 1.9) | (0.26, 2.0) |
| Quintile 2 | 21/304 | 1.2 | 1.1 | 0.68 |
| (62.87-67.85) | (6.9) | (0.57, 2.7) | (0.49, 2.5) | (0.24, 1.9) |
| Quintile 1 | 17/300 | 1.0 | 1.0 | 1.0 |
| (44.08-62.86) | (5.7) | (Reference) | (Reference) | (Reference) |
| p trend=0.3 | p trend= 0.7 | p trend= 0.9 | ||
*
Adjusted for age, BMI, leg length and tibiofemoral joint structural damage