Table 1.
Magnetic resonance imaging findings by disabled list (DL) status and innings pitched a
| Disabled List Status |
Innings Pitched |
||||
|---|---|---|---|---|---|
| Yes | No | P 1 b | Mean (Range) | P 2 c | |
| UCL tear d | 0.12 | 0.93 | |||
| Yes | 2 | 2 | 696 (442-1099) | ||
| No | 4 | 18 | 1187 (186-3182) | ||
| UCL degeneration | 0.65 | 0.53 | |||
| Yes | 4 | 9 | 1053 (186-3182) | ||
| No | 2 | 11 | 1171 (273-2941) | ||
| Olecranon cartilage injury | >0.99 | 0.52 | |||
| Yes | 3 | 9 | 1191 (186-3182) | ||
| No | 3 | 11 | 1044 (273-2694) | ||
| Common extensor origin signal | >0.99 | 0.69 | |||
| Yes | 1 | 6 | 871 (273-1555) | ||
| No | 5 | 14 | 1200 (186-3182) | ||
| Flexor pronator signal | 0.64 | 0.43 | |||
| Yes | 3 | 7 | 1028 (186-3182) | ||
| No | 3 | 13 | 1164 (307-2941) | ||
| Triceps tendinosis | 0.38 | 0.07 | |||
| Yes | 1 | 8 | 1255 (481-2694) | ||
| No | 5 | 12 | 1036 (186-3182) | ||
| Osteophytes | 0.07 | 0.19 | |||
| Yes | 5 | 7 | 1374 (307-3182) | ||
| No | 1 | 13 | 887 (186-1555) | ||
| Multiple findings e | 0.2 | 0.27 | |||
| Yes | 5 | 10 | 1293 (307-3182) | ||
| No | 1 | 10 | 901 (186-1555) | ||
UCL, ulnar collateral ligament.
a
Associations between innings pitched and disabled list placement with loose body, UCL spur, effusion, and biceps tendonitis were not examined secondary to limited statistical power/variation in subjects.
b
P1 values from Fisher exact tests.
c
P2 values from Wilcoxon rank-sum tests.
d
Group included 2 high-grade and 2 low-grade chronic tears. Both patients with high-grade tears were later placed on the disabled list. Of the 4 patients with UCL tear, all had intrasubstance degeneration as well.
e
Multiple findings were defined 3 or more of any of the above findings.