A Biomechanical Analysis of Matched Bone-Patellar Tendon-Bone and Double-Looped Semitendinosus and Gracilis Tendon Grafts
- 1 March 1999
- journal article
- research article
- Published by SAGE Publications in The American Journal of Sports Medicine
- Vol. 27 (2), 202-207
- https://doi.org/10.1177/03635465990270021501
Abstract
Biomechanical testing was done on 15 matched pairs of central-third bone-patellar tendon-bone and double-looped semitendinosus-gracilis grafts harvested from 15 cadaveric knees. Load to failure, composite graft stiffness, and the modulus of elasticity were calculated for each graft. Specimens were from 2 female and 13 male donors (average age, 40 years; range, 17 to 53). Average load to failure for the patellar tendon grafts was 1784 N ( 580), compared with 2422 N ( 538) for the hamstring tendon grafts (significantly different). There was no statistically significant difference in stiffness between grafts (patellar tendon, 210 N/mm; hamstring tendon, 238 N/mm). The elastic modulus was 225 MPa ( 129) for the patellar tendon grafts and 145 MPa ( 58) for the hamstring tendon grafts (significantly different). The average cross-sectional area for the hamstring tendon grafts was 57 mm2, compared with the 45 mm2 for the patellar tendon grafts. The hamstring tendon grafts were significantly stronger than the matched central-third patellar tendon grafts, but the two grafts were similar in stiffness. The patellar tendon grafts had a higher modulus than the hamstring tendon grafts.Keywords
This publication has 25 references indexed in Scilit:
- Biomechanical Analysis of Patellar Tendon Allografts as a Function of Donor AgeThe American Journal of Sports Medicine, 1995
- The Effects of Donor Age and Strain Rate on the Biomechanical Properties of Bone-Patellar Tendon-Bone AllograftsThe American Journal of Sports Medicine, 1994
- Patellar Tendon Versus Doubled Semitendinosus and Gracilis Tendons for Anterior Cruciate Ligament ReconstructionThe American Journal of Sports Medicine, 1994
- The strength of the central third patellar. tendon graftThe American Journal of Sports Medicine, 1993
- Prospective evaluation of arthroscopically assisted anterior cruciate ligament reconstructionThe American Journal of Sports Medicine, 1991
- Cyclops syndrome: Loss of extension following intra-articular anterior cruciate ligament reconstructionArthroscopy: The Journal of Arthroscopic & Related Surgery, 1990
- Nonlinear viscoelastic behaviour of the flexor tendon of the human handJournal of Biomechanics, 1990
- The influence of various carbon fibre braiding techniques and methods of fixation on the extensibility of ligament prosthesesBiomaterials, 1983
- Fracture of the patella during a golf swing following reconstruction of the anterior cruciate ligamentThe American Journal of Sports Medicine, 1983
- Biomechanics of Anterior Cruciate Ligament FailureThe Journal of Bone & Joint Surgery, 1974