Effect of platelet-rich plasma on tendon-to-bone healing after rotator cuff repair in rats: an in vivo experimental study
Abstract
Methods: Rotator cuff injury was created in 68 left shoulders of rats. PRP was obtained from the blood of an additional 15 rats. The 68 rats were divided into 4 groups with 17 rats in each group; PRP group (Week 2), control group (Week 2), PRP group (Week 4), and control group (Week 4). Plateletrich plasma or saline was injected to the repair area intraoperatively. Rats were sacrificed 2 and 4 weeks after the surgery. Histological analysis using a semiquantitative scoring was performed on 7 rats per group. Tendon integrity and increases in vascularity and inflammatory cells and the degree of new bone formation were evaluated and compared between the groups. The remaining tendons (n=10) were mechanically tested.
Results: Degree of inflammation and vascularity were less in the study group at both time intervals (p<0.05). Tendon continuity was better in the study group at 2 weeks (p<0.05). Obvious new bone formation was detected in the control group at 4 weeks (p<0.05). Biomechanically, platelet-rich plasmatreated specimens were stronger at 2 weeks (p<0.05). Conclusion: Local autologous PRP injection may have beneficial effects on initial rotator cuff tendon-to-bone healing and enhance initial tendon-to-bone healing remodeling. This may represent a clinically important improvement in rotator cuff repair.
Keywords
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Primary Language
English
Subjects
Health Care Administration
Journal Section
Research Article
Authors
Onur Hapa
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Husamettin Cakici
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Aysel Kukner
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Hayati Aygun
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Nazli Sarkalkan
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Gokhan Baysal
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Publication Date
September 5, 2012
Submission Date
March 7, 2014
Acceptance Date
-
Published in Issue
Year 2012 Volume: 46 Number: 4