Abstract
Background: To improve the success rate of rotator cuff repair, we investigated whether octacalcium phosphate (OCP) with gelatin (Gel) vehicle had a positive effect on tendon-to-bone healing. Methods: We assessed the histologic characteristics of the tendon-to-bone healing using the rabbit rotator cuff repair model. We divided the shoulders into 3 groups: control (without OCP/Gel composite), OCP/Gel composite (OCP+group), and Gel alone without OCP (Gel group) to evaluate the effectiveness of gelatin. Results: Both the number of newly formed tendon fibers and the Sharpey fibers at the repair site increased in the OCP+group compared with those in the other 2 groups on hematoxylin-eosin staining (P<.05). On immunohistochemical evaluation, both the bone and the fibers in the OCP+group demonstrated that type I collagen was picked up, whereas the newly formed tendon fibers and Sharpey fibers revealed type III collagen. Conclusion: Treatment with OCP made collagen fibers and the Sharpey fibers, constituted by type I and type III collagens, increase at the tendon-to-bone insertion. It might be beneficial for the healing of rotator cuff tendon to bone.
Original language | English |
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Pages (from-to) | e175-e184 |
Journal | Journal of Shoulder and Elbow Surgery |
Volume | 24 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2015 Jul 1 |
Keywords
- Basic Science Study
- Collagen fibers
- Enthesis
- Histology
- Octacalcium phosphate (OCP)
- Rotator cuff repair
- Sharpey fibers
- Shoulder
- Tendon-to-bone healing