TABLE 5.
Comparison of Baseline Stress US Findings of the Anterior Band of the UCL in the Dominant Elbows of Pitchers With Subsequent UCL Injuries and Asymptomatic Pitchersa
| Injured Pitchers (n = 12) | Asymptomatic Pitchers (n = 356) | P Value | χ2 (df) | |
|---|---|---|---|---|
| Thickness at rest, mm | 6.84 ± 1.56 | 6.11 ± 1.57 | .19 | |
| Joint space width, mm | ||||
| At rest | 3.44 ± 1.34 | 3.08 ± 1.77 | .44 | |
| With stress | 4.55 ± 1.52 | 4.09 ± 1.25 | .44 | |
| Change in joint space (with stress – at rest) | 1.06 ± 0.88 | 1.12 ± 0.95 | .83 | |
| Hypoechoic foci, n (%) | 5 (42.0) | 100 (29.4) | .17 | 1.90 (1) |
| Calcifications, n (%) | 3 (25.0) | 81 (24.0) | .68 | 0.17 (1) |
a
Data are expressed as mean ± standard deviation unless otherwise indicated. UCL, ulnar collateral ligament; US, ultrasound.