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Updated: May 11, 2026
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A Novel Tenorrhaphy Suture Technique with Tissue Engineered Collagen Graft to Repair Large Tendon Defects
Published on: December 10, 2021
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Optimal suturing techniques in patch-bridging reconstruction for massive rotator cuff tears: A finite element
Yuting Zhong1,2,3,4,5, Chengxuan Yu1, Sijia Feng1
1Sports Medicine Institute of Fudan University, Department of Sports Medicine, Huashan Hospital, Fudan University, Shanghai, 200040, PR China.
Summary
The 2-knot mattress suture provides superior biomechanical support for massive rotator cuff tears (MRCTs) compared to single-knot methods. This patch-bridging technique enhances rotator cuff repair strength.
Area of Science:
- Orthopedic Surgery
- Biomechanical Engineering
- Computational Modeling
Background:
- Massive rotator cuff tears (MRCTs) present significant surgical challenges.
- Current repair techniques aim to restore biomechanical integrity but can be limited by suture strength and failure modes.
Purpose of the Study:
- To develop a finite element model for patch-bridge repair of MRCTs.
- To evaluate the biomechanical impact of different suture methods and knot configurations on rotator cuff repair.
Main Methods:
- A finite element model of the glenohumeral joint was created using intact data.
- Simulated MRCTs using a full-thickness supraspinatus tendon defect model.
- Compared biomechanical properties of 1-knot simple, 1-knot mattress, and 2-knot mattress suture configurations.
Main Results:
- The 2-knot mattress suture demonstrated the highest ultimate failure load (81.5 N).
- Stress concentrations were observed at suture perforations on the patch and tendon.
- Failure primarily occurred at the suture perforation site, with cutting-through and pull-out as common modes.
Conclusions:
- Patch-bridging reconstruction effectively restores mechanical integrity for MRCTs.
- The 2-knot mattress suture is biomechanically optimal for patch-bridging repair of massive rotator cuff tears.
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