What is the role of loading rates in the etiologies of mallet finger?

Updated: Aug 27, 2018
  • Author: Roy A Meals, MD; Chief Editor: Harris Gellman, MD  more...
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Answer

From experimental studies, the rate of loading determines whether a tendon (or ligament) ruptures in midsubstance or is avulsed from its bony attachment. Rapid loading rates are more likely to cause a tear in the tendon itself, while lower loading rates are more likely to cause a bony avulsion. This is because the bone is relatively more viscoelastic than the tendon.


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