Biomechanical properties of the central third patellar tendon graft: effect of rotation

  • Daniel E. Cooper


The results of this study suggest that the central third of the patellar tendon may be stronger than previously reported. The mean ultimate load of a 15-mm bone-patellar tendon-bone composite was 4389 N (± 709 N); of the 10-mm wide composites, 2977 N (± 516 N); and of the 7-mm composites, 2238 N (± 316 N). Twisting the graft 90° increased the strength (P < 0.05). Further twisting to 180° had no significant effect compared with twisting to 90°. This study supports the practice of using smaller (10 mm) bone-patellar tendon-bone grafts to avoid the potential complications of patellar fracture and graft impingement in the notch, and suggests the value of rotating the graft prior to tibial fixation.

Key words Patellar tendon Rotation of graft 

Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Daniel E. Cooper
    • 1
  1. 1.W. B. Carrell Memorial Clinic, 2909 Lemmon Avenue, Dallas, TX 75204, USAUS

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