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The effect of intraosseous graft length on tendon-bone healing in anterior cruciate ligament reconstruction using flexor tendon.

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Title: The effect of intraosseous graft length on tendon-bone healing in anterior cruciate ligament reconstruction using flexor tendon.
Authors: Yamazaki, S. Browse this author
Yasuda, K. Browse this author →KAKEN DB
Tomita, F. Browse this author
Minami, A. Browse this author →KAKEN DB
Tohyama, Harukazu Browse this author →KAKEN DB
Keywords: Anterior cruciate ligament reconstruction
Intraosseous graft length
Flexor tendon graft
Anchoring strength
Intraosseous graft healing
Issue Date: Nov-2006
Publisher: Springer
Journal Title: Knee Surgery, Sports Traumatology, Arthroscopy
Volume: 14
Issue: 11
Start Page: 1086
End Page: 1093
Publisher DOI: 10.1007/s00167-006-0110-1
PMID: 16845550
Abstract: The current study was performed to understand the relationship between graft length placed within the bone tunnel and intraosseous graft healing in anterior cruciate ligament (ACL) reconstruction. Twenty-four adult beagle dogs were divided into two groups of 12 animals each. In each animal, ACL reconstruction using a 4-mm diameter autogenous flexor tendon graft was done in the left knee. In groups I and II, the graft having a length of 15 and 5 mm, respectively, was placed within the tibial tunnel. The proximal end of the graft was placed through the over-the-top route in all animals. In each group, five animals were sacrificed immediately after surgery, and the remaining seven were sacrificed at 6 weeks postoperatively. Biomechanical and histologic evaluations were performed. In pull out testing, the ultimate failure load and the linear stiffness of the graft-tibia complex harvested at 6 weeks were significantly greater than those harvested at the time-zero period. There were no significant differences in those parameters between groups I and II at 6 weeks. In each group, the perpendicular collagen fibers connecting the tendon to the bone tunnel wall were observed only in the narrow area located close to the intra-articular tunnel outlet. In conclusion, excessively long placement of the flexor graft within the bone tunnel does not result in an additional increase of anchoring strength and stiffness of the graft in ACL reconstruction.
Rights: The original publication is available at www.springerlink.com
Type: article (author version)
URI: http://hdl.handle.net/2115/16893
Appears in Collections:医学院・医学研究院 (Graduate School of Medicine / Faculty of Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 安田 和則

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