Biomechanical analysis of single-row anchor, double-row anchor, and single-row knotless tape repair techniques for complete subscapularis tears.

Manuel Waltenspül, Sebastian Kiss, Samy Bouaicha, Lukas Ernstbrunner, Paul Borbas, Karl Wieser

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Article in JSES reviews, reports, and techniques, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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6 authors.

Manuel WaltenspülDepartment of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.

Sebastian KissDepartment of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.

Samy BouaichaDepartment of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.

Lukas ErnstbrunnerDepartment of Orthopaedic Surgery, Box Hill Hospital, Eastern Health, Box Hill, Victoria, Australia.

Paul BorbasDepartment of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.

Karl WieserDepartment of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland.

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6 · The paper itself

Abstract

Background: Repair techniques for complete subscapularis (SSC) tendon tears have not been evaluated and compared in detail. The purpose of this study was to evaluate the biomechanical performance of different repair techniques for complete SSC tendon tears. Purpose: To evaluate the biomechanical performance of different repair techniques for complete SSC tendon tears. Methods: In a total of eighteen fresh-frozen shoulders with an intact rotator cuff, complete SSC tendon tears were created. Six shoulders matched by age and gender were allocated to each of the three repair technique groups: (1) knotted mattress single-row repair (group SR), (2) knotted mattress double-row repair (group DR), and (3) knotless tape single-row repair (group SRT). The quality of reconstruction was evaluated by measuring the SSC tendon footprint coverage (% of pre-operative footprint), repair stiffness (N/mm), cyclic displacement (mm), and the ultimate load to failure (N). Results: DR repair showed a significantly higher relative repair area compared to SR repair techniques (DR = 73.6% vs. SR = 45.6%, Conclusion: DR repair technique for complete SSC tendon tears achieves a significantly greater footprint coverage and the highest load to ultimate failure of the repair compared to SR repair techniques.

Indexed as

BiomechanicsDouble rowKnotlessRotator cuff tearSingle rowSubscapularisSubscapularis tendon tearTendon repair

Identifiers

PMID41809065

DOI10.1016/j.xrrt.2026.100664

PMCPMC12969818

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LicenceCC BY-NC-ND

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.