Table 2.
Achilles tendon MRI analysis characteristics
| Outcome | FH patients | CP | p-value | Statistic | Effect size |
|---|---|---|---|---|---|
| CSA (mm2) | 85.7 ± 28.2 [75.7–95.7] | 69.7 ± 14.5 [66.4–75.0] | 0.006a | t = 2.88 | 0.71 |
| Tendon thickness (mm) | 7.1 ± 1.9 [6.4–7.8] | 6.0 ± 0.8 [5.7–6.3] | 0.019b | U = 337 | 0.61 |
| Total lipid content (AU) | 3.8 ± 1.8 [3.1–4.4] | 3.0 ± 0.9 [2.7–3.3] | 0.089b | U = 385 | 0.44 |
| Total water content (AU) | 5.3 ± 2.3 [4.5–6.1] | 3.9 ± 1.3 [3.4–4.4] | 0.006b | U = 306 | 0.74 |
| Lipid/phantom ratio | 0.047 ± 0.011 [0.040–0.048] | 0.043 ± 0.008 [0.040–0.046] | 0.888b | U = 501 | 0.035 |
| Water/phantom ratio | 0.061 ± 0.013 [0.056–0.066] | 0.055 ± 0.011 [0.051–0.059] | 0.067b | U = 375 | 0.47 |
Group descriptives displayed as mean ± SD [95% CI]. p-values and test statistic obtained through aindependent t-tests or bMann-Whitney U tests. Effect size calculated as Cohen’s d. CSA = cross-sectional area; AU = arbitrary units