Modified Transtibial Pullout Repair for Medial Meniscus Posterior Root Tear Using a Barbed Suture: A Technical Note

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering

Background:

• Medial meniscus posterior root tears disrupt knee joint mechanics.
• Current repair techniques may have limitations in fixation strength and load distribution.

Purpose of the Study:

• To describe a modified transtibial pullout repair technique for medial meniscus posterior root tears.
• To enhance fixation strength and load distribution using a barbed suture system.

Main Methods:

• A modified transtibial pullout repair incorporating a circumferential barbed suture passed through posteromedial meniscocapsular tissue.
• Knotless, self-locking fixation with even tension distribution across the repair construct.
• Suture retrieval through a single tibial tunnel and fixation with knotless anchors on the anterior tibial cortex.

Main Results:

• The barbed suture enhances meniscal centralization and reduces extrusion.
• The technique promotes physiologic hoop stress transmission while minimizing stress concentration.
• The method is simple, reproducible, and compatible with standard arthroscopic instruments.

Conclusions:

• This modified transtibial pullout repair offers improved fixation strength and load distribution for medial meniscus posterior root tears.
• The technique is versatile and adaptable for various meniscal root tear patterns.
• It facilitates proper tensioning and physiologic stress transmission, aiding meniscus healing.