Fig. 5

The tendon specimen repaired with a non-absorbable suture during a initial loading (10 N), and after b pre-conditioning (10 cycles of 100 N), c 100 cycles of 100 N and d 100 cycles of 190 N demonstrating knot failure. e Ultimate tensile failure. Arrows indicate the reduction in length and increase in thickness related to the Bunnell suture termed the accordion effect