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I read in this 2015 study {1}:

This study is the first to show that pathological tendons have sufficient levels of aligned fibrillar structure. Pathological tendons may compensate for areas of disorganization by increasing in tendon thickness. […]

Tendon thickening is indicative of pathological changes; this study has shown that thickening may well be a positive finding.[…]

While increases in tendon thickness have previously been described as negative, the findings of this study suggest that tendon thickening might be the tendon’s method of adapting to pathology.

However, while I find it to be an extremely interesting study, I have the following reservations:

  • the study focused on Achilles and patellar tendons: I wonder if the same results apply to any tendon, or at least the most commonly injured tendons.
  • as the study mentions, "These results question the previous models of tendon pathology where the accumulation of microtrauma or failed healing is suggested to be the predominate feature of tendon pathology."

Which leads me to the question: do tendons thickened due to a tendon injury/pathology have the same strength as "normal" tendons?


References:

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