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Published in: Knee Surgery, Sports Traumatology, Arthroscopy 5/2015

01-05-2015 | Shoulder

Rotator cuff repair using a decellularized tendon slices graft: an in vivo study in a rabbit model

Authors: Juan Pan, Guo-Ming Liu, Liang-Ju Ning, Yi Zhang, Jing-Cong Luo, Fu-Guo Huang, Ting-Wu Qin

Published in: Knee Surgery, Sports Traumatology, Arthroscopy | Issue 5/2015

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Abstract

Purpose

Although varieties of surgical repair techniques and materials have been used to repair rotator cuff defects, re-tearing frequently occurs. The purpose of this study is to evaluate the postoperative outcomes of rotator cuff repairs with a decellularized tendon slices (DTSs) graft in a rabbit model.

Methods

Large defects in the infraspinatus tendons were created bilaterally in 21 rabbits. The graft group underwent reconstruction of the defects with the DTSs grafts, while the defect group did not undergo any treatment. The specimens underwent histological observation, biomechanical testing, and magnetic resonance imaging (MRI) detection at 4, 8, and 12 weeks after surgery. In addition, 2 rabbits that were not operated on were used for MRI detection as a normal reference.

Results

Histological analysis revealed that the graft promoted host cell ingrowth and tissue integration, and a tendon-like structure developed at 12 weeks. The ultimate tensile load had a significant difference between specimens at 4 and 12 weeks in the graft group, but there was no significant difference between the graft group and the defect group. In the graft group, the stiffness at 12 weeks was significantly greater than that at 4 or 8 weeks, and it was also greater than the stiffness in the defect group at 12 weeks. MRI demonstrated that the signal strength of the regenerative tissue from the graft group at 12 weeks was similar to that of normal infraspinatus tendon.

Conclusion

The DTSs graft allowed for incorporation of host tendon and improved the biomechanical performance of the regenerative tendon. Therefore, the graft could be a promising bioscaffold to enhance the surgical repair of large rotator cuff defects and consequently improve the clinical outcome of rotator cuff tears.
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Metadata
Title
Rotator cuff repair using a decellularized tendon slices graft: an in vivo study in a rabbit model
Authors
Juan Pan
Guo-Ming Liu
Liang-Ju Ning
Yi Zhang
Jing-Cong Luo
Fu-Guo Huang
Ting-Wu Qin
Publication date
01-05-2015
Publisher
Springer Berlin Heidelberg
Published in
Knee Surgery, Sports Traumatology, Arthroscopy / Issue 5/2015
Print ISSN: 0942-2056
Electronic ISSN: 1433-7347
DOI
https://doi.org/10.1007/s00167-014-2923-7

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