Modified Margin Convergence: Over-Under Lacing Suture Technique.

Area of Science:

• Orthopedic Surgery
• Biomechanical Engineering
• Sports Medicine

Background:

• Rotator cuff tears, particularly massive U-shaped tears, present significant challenges in surgical repair.
• Enhancing fixation security and reducing mechanical strain are critical for successful rotator cuff repair outcomes.
• Existing techniques may not adequately address margin convergence and balanced tissue tension.

Purpose of the Study:

• To describe and evaluate a novel suture technique, over-under lacing, for rotator cuff repair.
• To assess the ability of this technique to achieve margin convergence and equalize tissue tension.
• To evaluate the preliminary clinical results of this technique in patients with massive rotator cuff tears.

Main Methods:

• A consecutive series of patients with massive U-shaped rotator cuff tears were treated using the over-under lacing technique.
• Preoperative diagnosis, tear assessment, and fatty infiltration grading were performed using arthro-computed tomography (CT).
• The technique involves passing sutures from medial to lateral margins with knotless anchors for tendon-to-bone fixation.

Main Results:

• The over-under lacing technique successfully achieved margin convergence and balanced tissue tension across the cuff.
• The technique appears to reduce tensile strain on the repaired tendon and reconstruct the rotator cuff cable.
• Preliminary clinical results for patients with massive rotator cuff tears were satisfactory.

Conclusions:

• The over-under lacing suture technique is a simple and reproducible method for rotator cuff repair.
• This technique effectively achieves margin convergence, reduces tensile strain, and reconstructs the rotator cuff cable.
• Satisfactory preliminary clinical outcomes suggest this technique is a viable option for massive rotator cuff tears.