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A biomechanical comparison of initial fixation strength of 3 different methods of anterior cruciate ligament soft tissue graft tibial fixation: resistance to monotonic and cyclic loading.

Publication ,  Journal Article
Bartz, RL; Mossoni, K; Tyber, J; Tokish, J; Gall, K; Siparsky, PN
Published in: The American journal of sports medicine
June 2007

Tibial fixation of soft tissue grafts continues to be problematic in the early postoperative period after anterior cruciate ligament reconstruction.No differences exist for resistance to slippage of soft tissue grafts fixed with CentraLoc, Intrafix, or 35-mm bioabsorbable interference screws.Controlled laboratory study.Bovine tibia and hoof extensor tendons were divided into 3 matched groups with 12 tibia and 12 extensor tendons in each group. Within each group, 6 specimens underwent monotonic loading to failure (1 mm/s), and 6 underwent cyclic loading (10,000 cycles, 125-325 N, 1 Hz).No statistically significant differences were noted in mean load to failure or stiffness. The mean load to failure (and stiffness) for the 3 types of fixation were as follows: bioabsorbable interference screw, 631.6 +/- 130.1 N (88.17 +/- 6.79 N/mm); Intrafix, 644.3 +/- 195.2 N (81.65 +/- 16.5 N/mm); and CentraLoc, 791.1 +/- 72.7 N (77.89 +/- 7.07 N/mm). The slippage rates under cyclic loading for the 3 types of fixation were bioabsorbable interference screw, 0.336 +/- 0.074 microm/cycle; Intrafix, 27.2 +/- 31.6 microm/cycle; and CentraLoc, 0.0355 +/- 0.0046 microm/cycle. In this model, CentraLoc proved statistically superior in resistance to cyclic loading compared with the bioabsorbable interference screw (P < .05) and Intrafix (P < .0001). The bioabsorbable interference screw proved statistically superior to Intrafix in resistance to cyclic loading (P < .05).In this bovine model, CentraLoc and bioabsorbable interference screws provided superior resistance to cyclic loading compared with Intrafix.CentraLoc and bioabsorbable interference screws showed superior resistance to cyclic loading, which may indicate an increased resistance to clinical failure.

Duke Scholars

Published In

The American journal of sports medicine

DOI

EISSN

1552-3365

ISSN

0363-5465

Publication Date

June 2007

Volume

35

Issue

6

Start / End Page

949 / 954

Related Subject Headings

  • Weight-Bearing
  • United States
  • Transplants
  • Orthopedics
  • Internal Fixators
  • Connective Tissue
  • Cattle
  • Biomechanical Phenomena
  • Anterior Cruciate Ligament
  • Animals
 

Citation

APA
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ICMJE
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Bartz, R. L., Mossoni, K., Tyber, J., Tokish, J., Gall, K., & Siparsky, P. N. (2007). A biomechanical comparison of initial fixation strength of 3 different methods of anterior cruciate ligament soft tissue graft tibial fixation: resistance to monotonic and cyclic loading. The American Journal of Sports Medicine, 35(6), 949–954. https://doi.org/10.1177/0363546507301881
Bartz, Reed L., Kory Mossoni, Jeffrey Tyber, John Tokish, Kenneth Gall, and Patrick N. Siparsky. “A biomechanical comparison of initial fixation strength of 3 different methods of anterior cruciate ligament soft tissue graft tibial fixation: resistance to monotonic and cyclic loading.The American Journal of Sports Medicine 35, no. 6 (June 2007): 949–54. https://doi.org/10.1177/0363546507301881.
Bartz RL, Mossoni K, Tyber J, Tokish J, Gall K, Siparsky PN. A biomechanical comparison of initial fixation strength of 3 different methods of anterior cruciate ligament soft tissue graft tibial fixation: resistance to monotonic and cyclic loading. The American journal of sports medicine. 2007 Jun;35(6):949–54.
Bartz, Reed L., et al. “A biomechanical comparison of initial fixation strength of 3 different methods of anterior cruciate ligament soft tissue graft tibial fixation: resistance to monotonic and cyclic loading.The American Journal of Sports Medicine, vol. 35, no. 6, June 2007, pp. 949–54. Epmc, doi:10.1177/0363546507301881.
Bartz RL, Mossoni K, Tyber J, Tokish J, Gall K, Siparsky PN. A biomechanical comparison of initial fixation strength of 3 different methods of anterior cruciate ligament soft tissue graft tibial fixation: resistance to monotonic and cyclic loading. The American journal of sports medicine. 2007 Jun;35(6):949–954.
Journal cover image

Published In

The American journal of sports medicine

DOI

EISSN

1552-3365

ISSN

0363-5465

Publication Date

June 2007

Volume

35

Issue

6

Start / End Page

949 / 954

Related Subject Headings

  • Weight-Bearing
  • United States
  • Transplants
  • Orthopedics
  • Internal Fixators
  • Connective Tissue
  • Cattle
  • Biomechanical Phenomena
  • Anterior Cruciate Ligament
  • Animals