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Improved healing of ligament to bone with point fixation in rabbits
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
Division of orthopedics and sports medicine, department of neuroscience and locomotion, Linköping, Sweden.
Division of orthopedics and sports medicine, department of neuroscience and locomotion, Linköping, Sweden.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Surgical Sciences, Orthopaedics.
2006 (English)In: Acta Orthopaedica, ISSN 1745-3674, E-ISSN 1745-3682, Vol. 77, no 6, 967-972 p.Article in journal (Refereed) Published
Abstract [en]

Background  

Secure healing of soft tissue to bone is a prerequisite for many orthopedic operations. This healing can be achieved either by pressing the tissue against the bone (press fixation) or by suturing the soft tissue to the bone (point fixation).

Experiments and findings

We tested the hypothesis that point fixation of soft tissue to bone results in better biomechanical properties than press fixation. 10 skeletally mature New Zealand rabbits were operated on bilaterally at the knees. The medial collateral ligaments were fixated to the bone just above the original insertion on the tibia. Two types of plates were used for this purpose, one with flat undersurface (left knee) the other one with a pegged undersurface (right knee). The pegged plate was thought to mimic fixation achieved with suture anchors. After four weeks, mechanical testing revealed an almost doubled force at failure, stiffness and energy uptake in the knees operated with the pegged plates.

Interpretation

Suture anchors or devices with a pegged undersurface are better for soft tissue fixation to bone than devices with flat surface like screws with washers or staples.

Place, publisher, year, edition, pages
2006. Vol. 77, no 6, 967-972 p.
National Category
Orthopedics
Identifiers
URN: urn:nbn:se:uu:diva-167679DOI: 10.1080/17453670610013303PubMedID: 17260209OAI: oai:DiVA.org:uu-167679DiVA: diva2:491563
Available from: 2012-02-06 Created: 2012-01-31 Last updated: 2017-12-08Bibliographically approved

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