We thank Wu (2017) and the editors for the opportunity to provide greater discussion on the association of tendon shear wave velocity (SWV) with potentially important covariates including sex and age. We would like to first clarify that we did not directly compare the Achilles and patellar tendinopathy groups. Instead, the (most) affected tendon from each tendinopathy group was compared with a matched tendon from the healthy control group. Due to the blinded nature of this study, we sought to include a broad cohort of healthy control participants and performed statistical adjustment for age, sex, body mass index, and tendon thickness in all models. Although not without limitation, we consider this approach provides some meaningful information in response to the comments raised in this letter to the editor.Wu (2017) postulates that the lower male‐to‐female proportion might explain the higher SWV for patellar tendinopathy compared to healthy controls. Evidence of differences in tendon mechanical properties between sexes is reported in some, but not all studies, derived from measurement of force and deformation during maximal contraction. Heterogeneity is also found between studies using shear wave elastography. In our sample, no male‐female differences in SWV were observed at any tendon region, suggesting
Scandinavian Journal of Medicine & Science in Sports – Wiley
Published: Jan 1, 2018
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