Biomechanical and viscoelastic properties of different posterior meniscal root fixation techniques

Purpose The purpose of the present study was to biomechanically compare three different posterior meniscal root repair techniques. Transtibial fixation of a posterior meniscus root tear (PMRT) combined with an anterior cruciate ligament (ACL) reconstruction via one tunnel only shows similar properti...

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Published in:Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA sports traumatology, arthroscopy : official journal of the ESSKA, 2017-02, Vol.25 (2), p.403-410
Main Authors: Forkel, Philipp, Foehr, Peter, Meyer, Johannes C., Herbst, Elmar, Petersen, Wolf, Brucker, Peter U., Burgkart, Rainer, Imhoff, Andreas B.
Format: Article
Language:English
Subjects:
Animals
Anterior Cruciate Ligament - physiopathology
Anterior Cruciate Ligament - surgery
Anterior Cruciate Ligament Injuries - physiopathology
Anterior Cruciate Ligament Injuries - surgery
Anterior Cruciate Ligament Reconstruction - methods
Biomechanical Phenomena
Biomechanics
Bone Screws
Knee
Knee Injuries - surgery
Medicine
Medicine & Public Health
Menisci, Tibial - physiopathology
Menisci, Tibial - surgery
Orthopedics
Pressure distribution
Reconstructive Surgical Procedures - methods
Suture Anchors
Suture Techniques
Sutures
Swine
Tendons - transplantation
Tibia - surgery
Tibial Meniscus Injuries - physiopathology
Tibial Meniscus Injuries - surgery
Transplants - surgery
Viscoelasticity
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Summary:Purpose The purpose of the present study was to biomechanically compare three different posterior meniscal root repair techniques. Transtibial fixation of a posterior meniscus root tear (PMRT) combined with an anterior cruciate ligament (ACL) reconstruction via one tunnel only shows similar properties in terms of cyclic loading and load to failure compared with direct anchor fixation. Methods Twenty-eight porcine knees were randomly assigned to 4 groups ( n  = 7 each): (1) native posterior meniscal root, (2) suture anchor repair, (3) refixation via a tibial ACL tunnel in combination with an interference screw fixation of the ACL graft, and (4) refixation via a tibial ACL tunnel in combination with an interference screw fixation of the ACL graft with an additional extracortical button fixation. The four groups underwent cyclic loading followed by a load-to-failure testing. Construct elongation during 1000 cycles, dynamic stiffness, attenuation, maximum force during load-to-failure testing, and failure mode were recorded. Results All reconstructions showed a significant lower maximum load ( p  
ISSN:0942-2056
1433-7347
DOI:10.1007/s00167-016-4237-4