Surgical suturing of articular cartilage induces osteoarthritis-like changes

Hunziker, E B; Stähli, A (2008). Surgical suturing of articular cartilage induces osteoarthritis-like changes. Osteoarthritis and cartilage, 16(9), pp. 1067-73. Amsterdam: Elsevier 10.1016/j.joca.2008.01.009

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INTRODUCTION: In clinical tissue-engineering-based approaches to articular cartilage repair, various types of flap are frequently used to retain an implanted construct within the defect, and they are usually affixed by suturing. We hypothesize that the suturing of articular cartilage is associated with a loss of chondrocytes from, and osteoarthritis-like changes within, the perisutural area. MATERIALS AND METHODS: We established a large, partial-thickness defect model in the femoral groove of adult goats. The defects were filled with bovine fibrinogen to support a devitalized flap of autologous synovial tissue, which was sutured to the surrounding articular cartilage with single, interrupted stitches. The perisutural and control regions were analyzed histologically, histochemically and histomorphometrically shortly after surgery and 3 weeks later. RESULTS: Compared to control regions, chondrocytes were lost from the perisutural area even during the first few hours of surgery. During the ensuing 3 weeks, the numerical density of cells in the perisutural area decreased significantly. The cell losses were associated with a loss of proteoglycans from the extracellular matrix. Shortly after surgery, fissures were observed within the walls of the suture channels. By the third week, their surface density had increased significantly and they were filled with avascular mesenchymal tissue. CONCLUSIONS: The suturing of articular cartilage induces severe local damage, which is progressive and reminiscent of that associated with the early stages of osteoarthritis. This damage could be most readily circumvented by adopting an alternative mode of flap affixation, such as gluing with a biological adhesive.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Center of Regenerative Medicine for Skeletal Tissues [discontinued] 04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) > DBMR Forschung Mu35 > Center of Regenerative Medicine for Skeletal Tissues [discontinued]
UniBE Contributor:	Hunziker, Ernst Bruno
ISSN:	1063-4584
ISBN:	18308590
Publisher:	Elsevier
Language:	English
Submitter:	Factscience Import
Date Deposited:	04 Oct 2013 15:06
Last Modified:	05 Dec 2022 14:20
Publisher DOI:	10.1016/j.joca.2008.01.009
PubMed ID:	18308590
Web of Science ID:	000259379400015
URI:	https://boris.unibe.ch/id/eprint/28536 (FactScience: 121230)