Supraspinatus tendon transosseous vs anchor repair surgery: a comparative study of mechanical recovery in the rabbit

Abstract Background Supraspinatus (SSP) tendon ruptures requiring surgical repair are common. Arthroscopic suture anchor fixation has gradually replaced transosseous repair in supraspinatus tendon tear. Our objective was to compare mechanical properties between transosseous and anchor supraspinatus...

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Main Authors: Joaquim Chaler, Hakim Louati, Hans K. Uhthoff, Guy Trudel
Format: Article
Language:English
Published: BMC 2020-12-01
Series:Journal of Orthopaedic Surgery and Research
Subjects:
Online Access:https://doi.org/10.1186/s13018-020-02085-8
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spelling doaj-9af3e106bc074f7dabd31b8c1ffe24a82020-12-07T23:38:18ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2020-12-011511910.1186/s13018-020-02085-8Supraspinatus tendon transosseous vs anchor repair surgery: a comparative study of mechanical recovery in the rabbitJoaquim Chaler0Hakim Louati1Hans K. Uhthoff2Guy Trudel3Department of Physical Medicine and Rehabilitation, EgarsatBone and Joint Research Laboratory, The Ottawa Hospital Research InstituteBone and Joint Research Laboratory, The Ottawa Hospital Research InstituteBone and Joint Research Laboratory, The Ottawa Hospital Research InstituteAbstract Background Supraspinatus (SSP) tendon ruptures requiring surgical repair are common. Arthroscopic suture anchor fixation has gradually replaced transosseous repair in supraspinatus tendon tear. Our objective was to compare mechanical properties between transosseous and anchor supraspinatus repair in the first 6 postoperative weeks in a rabbit model. Methods One hundred and fifty-two rabbits had one supraspinatus tendon repaired either with an anchor suture 1 week after detachment or with transosseous sutures. Rabbits were euthanized at 0, 1, 2, 4 or 6 postoperative weeks. Experimental and contralateral tendons (304 tendons) were mechanically tested to failure. Data are expressed as percent of contralateral. Results Anchor repair had higher loads to failure compared to transosseous repair, at immediate repair (week 0, 52 ± 21% vs 25 ± 17%, respectively; p = 0.004) and at 1 postoperative week (64 ± 32% vs 28 ± 10%; p = 0.003) with no difference after 2 weeks. There was no difference in stiffness. Transosseous repairs showed higher rates of midsubstance failures compared to anchor repairs at 1 (p = 0.004) and 2 postoperative weeks (p < 0.001). Both transosseous and anchor repairs restored supraspinatus mechanical properties after 4 postoperative weeks. Conclusion Anchor repair provided better initial tensile strength while transosseous repair led to a faster normalization (namely, midsubstance) of the mode of failure. Research to optimize supraspinatus repair may need to consider the advantages from both surgical approaches.https://doi.org/10.1186/s13018-020-02085-8Supraspinatus tendonMechanical testingTendon injuriesAnimal modelRotator cuffRehabilitation
collection DOAJ
language English
format Article
sources DOAJ
author Joaquim Chaler
Hakim Louati
Hans K. Uhthoff
Guy Trudel
spellingShingle Joaquim Chaler
Hakim Louati
Hans K. Uhthoff
Guy Trudel
Supraspinatus tendon transosseous vs anchor repair surgery: a comparative study of mechanical recovery in the rabbit
Journal of Orthopaedic Surgery and Research
Supraspinatus tendon
Mechanical testing
Tendon injuries
Animal model
Rotator cuff
Rehabilitation
author_facet Joaquim Chaler
Hakim Louati
Hans K. Uhthoff
Guy Trudel
author_sort Joaquim Chaler
title Supraspinatus tendon transosseous vs anchor repair surgery: a comparative study of mechanical recovery in the rabbit
title_short Supraspinatus tendon transosseous vs anchor repair surgery: a comparative study of mechanical recovery in the rabbit
title_full Supraspinatus tendon transosseous vs anchor repair surgery: a comparative study of mechanical recovery in the rabbit
title_fullStr Supraspinatus tendon transosseous vs anchor repair surgery: a comparative study of mechanical recovery in the rabbit
title_full_unstemmed Supraspinatus tendon transosseous vs anchor repair surgery: a comparative study of mechanical recovery in the rabbit
title_sort supraspinatus tendon transosseous vs anchor repair surgery: a comparative study of mechanical recovery in the rabbit
publisher BMC
series Journal of Orthopaedic Surgery and Research
issn 1749-799X
publishDate 2020-12-01
description Abstract Background Supraspinatus (SSP) tendon ruptures requiring surgical repair are common. Arthroscopic suture anchor fixation has gradually replaced transosseous repair in supraspinatus tendon tear. Our objective was to compare mechanical properties between transosseous and anchor supraspinatus repair in the first 6 postoperative weeks in a rabbit model. Methods One hundred and fifty-two rabbits had one supraspinatus tendon repaired either with an anchor suture 1 week after detachment or with transosseous sutures. Rabbits were euthanized at 0, 1, 2, 4 or 6 postoperative weeks. Experimental and contralateral tendons (304 tendons) were mechanically tested to failure. Data are expressed as percent of contralateral. Results Anchor repair had higher loads to failure compared to transosseous repair, at immediate repair (week 0, 52 ± 21% vs 25 ± 17%, respectively; p = 0.004) and at 1 postoperative week (64 ± 32% vs 28 ± 10%; p = 0.003) with no difference after 2 weeks. There was no difference in stiffness. Transosseous repairs showed higher rates of midsubstance failures compared to anchor repairs at 1 (p = 0.004) and 2 postoperative weeks (p < 0.001). Both transosseous and anchor repairs restored supraspinatus mechanical properties after 4 postoperative weeks. Conclusion Anchor repair provided better initial tensile strength while transosseous repair led to a faster normalization (namely, midsubstance) of the mode of failure. Research to optimize supraspinatus repair may need to consider the advantages from both surgical approaches.
topic Supraspinatus tendon
Mechanical testing
Tendon injuries
Animal model
Rotator cuff
Rehabilitation
url https://doi.org/10.1186/s13018-020-02085-8
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