Clinical Report: Round and Tape Sutures Show Comparable Biomechanical Performance

Overview

This cadaveric study compared round and tape sutures secured by interference-fit anchors at the glenoid and greater tuberosity. The supplied article material describes the study rationale and methods but does not provide its biomechanical results, so comparative performance cannot be quantified from the available text.

Background

Rotator cuff tears are a major source of shoulder pain in middle-aged and older adults, and the source reports more than 500,000 operations annually in the United States, approximately 90% performed arthroscopically. Suture design has been studied at the tendon interface, where tape has been associated with a broader contact area and higher contact pressures, while cyclic loading may produce greater displacement. Interference-fit anchors compress sutures against bone, making suture slippage a potential failure mechanism. The article identifies a lack of direct comparisons of round and tape sutures at this anchor interface, including in glenoid labral repair.

Data Highlights

Key Findings

• The study was designed to compare round wire sutures with wider, flat tape sutures at the suture–anchor interface in interference-fit anchors.
• Greater tuberosity testing was intended to model rotator cuff repair, while glenoid testing represented labral repair.
• The investigators hypothesized that tape sutures would have lower pullout strength because their compressed geometry beneath an interference-fit anchor could be more prone to slippage.
• The supplied methods report five pairs of fresh-frozen shoulders, with a mean donor age of 44.4 years and an age range of 32–50 years.
• Four glenoid pairs were used; one was excluded because improper storage rendered it unsuitable.
• The provided article excerpt does not include the study’s results, so the title’s claim of comparable performance cannot be independently detailed with outcome data here.

Clinical Implications

The supplied material establishes the relevance of suture slippage as a possible failure mechanism in interference-fit fixation but does not provide outcome data to guide selection between round and tape sutures. The findings should not be translated into a clinical preference without the study’s reported biomechanical results and relevant clinical evidence.

Conclusion

The article addresses an identified gap by testing suture shape at the interference-fit anchor interface in cadaveric glenoid and greater tuberosity models. The supplied excerpt contains the rationale and methods, but not the results needed to assess the reported comparison.

Related Resources & Content

1. Archives of Orthopaedic and Trauma Surgery, 2026 -- Round versus tape sutures with interference fit anchors perform similarly in cadaveric glenoid and greater tuberosity biomechanical testing
2. American Academy of Orthopaedic Surgeons, 2025 -- Management of Rotator Cuff Injuries: Clinical Practice Guideline Summary
3. Systematic review and meta-analysis, 2021 -- Use of Suture Tapes Versus Conventional Sutures for Arthroscopic Rotator Cuff Repairs
4. Knee Surgery, Sports Traumatology, Arthroscopy — Comparative Analysis of Biomechanical Properties in Single-Row Versus Double-Row Rotator Cuff Repair: Focus on Suture Configuration and Material
5. Evaluating Tape Suture Techniques for Pubic Symphysis Instability: Is Motion Preservation a Viable Treatment Approach? A Cadaveric Investigation
6. Knee Surgery, Sports Traumatology, Arthroscopy — Biomechanical Assessment and Contact Pressure Analysis at the Tendon-Bone Interface in a Modified Suture-Bridge Approach for Rotator Cuff Repair
7. Knee Surgery, Sports Traumatology, Arthroscopy — Impact of All-Suture Anchor Pullout on Bone Integrity and Its Relationship with Cortical Thickness
8. Round versus tape sutures with interference fit anchors perform similarly in cadaveric glenoid and greater tuberosity biomechanical testing
9. 2025 Updated AAOS Guidelines for Management of Rotator Cuff Injuries - Guideline Summary
10. 2025 Updated AAOS Guidelines for Management of Rotator Cuff Injuries - Guideline Summary - Guideline Central
11. Arthroscopic transosseous anchorless versus suture anchor repair for rotator cuff tears: a meta-analysis | BMC Musculoskeletal Disorders | Springer Nature Link
12. All-suture soft anchors versus metal anchors in arthroscopic rotator cuff repair: a multicenter randomized clinical trial.
13. https://bmcmusculoskeletdisord.biomedcentral.com/counter/pdf/10.1186/s12891-025-08728-3.pdf
14. Round versus tape sutures with interference fit anchors perform similarly in cadaveric glenoid and greater tuberosity biomechanical testing | Archives of Orthopaedic and Trauma Surgery | Springer Nature Link
15. FACT SHEET: AAOS Releases 2026 Shoulder & Elbow Registry Annual Report