Table 4.
Association of Radiologic Features with Assessments Based on Published Elbow OA Classification Systems a
| Feature | Statistical Test | Classification System | ||
|---|---|---|---|---|
| B-M | H-R | Kwak | ||
| Any PRUJ OA feature | Cochran-Armitage trend test | -2.624 | -3.421 | -2.266 |
| P value | .011 | .002 | .032 | |
| Radial notch osteophyte | Cochran-Armitage trend test | -2.232 | -2.081 | -3.598 |
| P value | .037 | .051 | <.001 | |
| Radial head osteophyte | Cochran-Armitage trend test | -3.883 | -3.159 | -2.851 |
| P value | <.001 | .002 | .005 | |
| Joint space narrowing | Cochran-Armitage trend test | -3.230 | -2.107 | -2.193 |
| P value | .002 | .047 | .031 | |
| Subchondral cyst | Cochran-Armitage trend test | -1.350 | -1.372 | -1.247 |
| P value | .189 | .213 | .275 | |
| Loose bodies | Cochran-Armitage trend test | -1.290 | -1.010 | -1.470 |
| P value | .268 | .389 | .161 | |
a
Boldface type indicates statistical significance. B-M, Broberg-Morrey; H-R, Hasting-Rettig; OA, osteoarthritis; PRUJ, proximal radioulnar joint.