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Arthroscopy. 2014 Oct;30(10):1254-60. doi: 10.1016/j.arthro.2014.07.005.

Distal triceps knotless anatomic footprint repair is superior to transosseous cruciate repair: a biomechanical comparison.

Author information

1
Department of Orthopaedic Surgery, Stony Brook University School of Medicine, Stony Brook, New York, U.S.A.
2
Human Soft Tissue Research Laboratory, New England Musculoskeletal Institute, University of Connecticut Health Center, Farmington, Connecticut, U.S.A.
3
Department of Orthopaedic Surgery, Stony Brook University School of Medicine, Stony Brook, New York, U.S.A.. Electronic address: james.paci@stonybrookmedicine.edu.

Abstract

PURPOSE:

The purpose of this study was to evaluate the biomechanical properties of a method of repair using bone tunnels with multiple high-strength nonabsorbable sutures and one knotless suture anchor compared with the standard transosseous technique for repair of the distal triceps.

METHODS:

The triceps tendon footprint was measured in 18 cadaveric elbows (9 matched pairs), and a distal tendon rupture was created. Eighteen elbows (9 matched pairs) were randomly assigned to one of 2 repair groups: transosseous cruciate repair group or knotless anatomic footprint repair group. Cyclic loading was performed for a total of 1,500 cycles and displacement was measured. Data for load at yield and peak load were obtained.

RESULTS:

The average bony footprint of the triceps tendon was 466 mm(2). Cyclic loading of tendons from the 2 repair types showed that the knotless anatomic footprint repair produced less displacement when compared with the transosseous cruciate repair (P < .05). Load at yield and peak load were also greater in the knotless anatomic footprint repair group (P < .05).

CONCLUSIONS:

Distal triceps knotless anatomic footprint repair in a cadaveric model had a significantly higher load and cycle to failure when compared with the traditional transosseous cruciate repair and produced less repair site motion.

CLINICAL RELEVANCE:

The increased biomechanical strength and resistance to displacement at the tendon-bone interface may lead to improved clinical outcomes with the knotless anatomic footprint repair technique and warrants further clinical study.

PMID:
25281349
DOI:
10.1016/j.arthro.2014.07.005
[Indexed for MEDLINE]

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