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First published on April 16, 2004, doi:10.1177/0363546503260749
This version was published on June 1, 2004
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The American Journal of Sports Medicine 32:863-869 (2004)
© 2004 American Orthopaedic Society for Sports Medicine

Initial Fixation Strength of Flexible All-Inside Meniscus Suture Anchors in Comparison to Conventional Suture Technique and Rigid Anchors

Biomechanical Evaluation of New Meniscus Refixation Systems

Thore Zantop*, Ann Katleen Eggers*, Andre Weimann*, Joachim Hassenpflug* and Wolf Petersen{dagger},{ddagger}

From the * Department of Orthopaedic Surgery, Christian-Albrechts-University Kiel, Germany, and the {ddagger} Department of Trauma, Hand and Reconstructive Surgery, Wilhelms-University, Muenster, Germany

{dagger} Address correspondence to Wolf Petersen, Department of Trauma, Hand and Reconstructive Surgery, Wilhelms-University Munster, Aaldeyerstr.1, 48149 Munster, Germany.

Background: The newest generation of meniscus repair devices is designed to combine the benefits of the all-inside technique with the biomechanical properties of sutures.

Hypothesis: New flexible all-inside suture anchors have better fixation strength than rigid anchors, but there is no difference when compared to conventional horizontal and vertical mattress sutures.

Study Design: Controlled laboratory study.

Methods: In fresh-frozen bovine menisci, initial fixation strength, stiffness, and failure mode of different meniscus fixation techniques (FastT-Fix, RapidLoc, Meniscus Arrow, horizontal and vertical 2.0 Ethibond sutures) were evaluated in a computer-based materials testing machine at a rate of 12.5 mm/sec.

Results: The vertical and horizontal FastT-Fix suture anchors were the strongest devices with regard to pullout strength, with no significant difference compared to the vertical 2-0 Ethibond sutures. Horizontal sutures, Meniscus Arrow, and RapidLoc had significantly lower pullout strength. Vertical and horizontal FastT-Fix suture anchors showed significantly higher stiffness than the other devices.

Conclusions: Biomechanical properties of flexible all-inside meniscus anchors (FastT-Fix) are comparable to conventional vertical suture techniques. Characteristics of the flexible RapidLoc are comparable to rigid anchors (Meniscus Arrow).

Clinical Relevance: From the biomechanical point of view, flexible all-inside meniscus refixation devices are an alternative to conventional suture techniques and rigid meniscus anchors.

Key Words: meniscus fixation techniques • meniscus anchors • biodegradable implants • biomechanics • bucket-handle tear




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J. S. Quinby, S. R. Golish, J. A. Hart, and D. R. Diduch
All-Inside Meniscal Repair Using a New Flexible, Tensionable Device
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T. Zantop, K. Temmig, A. Weimann, A. K. Eggers, M. J. Raschke, and W. Petersen
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H. C. Chang, J. Nyland, D. N. M. Caborn, and R. Burden
Biomechanical Evaluation of Meniscal Repair Systems: A Comparison of the Meniscal Viper Repair System, the Vertical Mattress FasT-Fix Device, and Vertical Mattress Ethibond Sutures
Am. J. Sports Med., December 1, 2005; 33(12): 1846 - 1852.
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T. Zantop, A. K. Eggers, V. Musahl, A. Weimann, and W. Petersen
Cyclic Testing of Flexible All-Inside Meniscus Suture Anchors: Biomechanical Analysis
Am. J. Sports Med., March 1, 2005; 33(3): 388 - 394.
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