Biomechanical comparison of the FasT-Fix meniscal repair suture system with vertical mattress sutures and meniscus arrows.
BACKGROUND
A meniscal repair technique that combines the strength of vertical mattress sutures and the decreased tissue morbidity of an all-inside technique would be advantageous.


OBJECTIVE
The FasT-Fix Meniscal Repair Suture System will provide load at failure, stiffness, and displacement equivalent to that of vertical mattress sutures and superior to that of Meniscus Arrows.


METHODS
In vitro biomechanical study.


METHODS
After repair of a 2-cm vertical longitudinal medial meniscal lesion, three groups of six human cadaveric knees were biomechanically tested in a random order on a servohydraulic device, and three groups of five specimens underwent cyclic loading.


RESULTS
Specimens repaired with Meniscus Arrows had reduced load at failure, stiffness, and displacement, but there were no differences between the FasT-Fix and vertical mattress suture methods. During cyclic loading, specimens repaired with two Meniscus Arrows failed before test completion, whereas specimens repaired with two vertical mattress sutures (6.0 +/- 3.7 mm) or with two FasT-Fix implants (5.1 +/- 1.4 mm) maintained fixation with comparable displacements.


CONCLUSIONS
The FasT-Fix provided load at failure, stiffness, and displacement comparable with that of vertical mattress sutures.


CONCLUSIONS
The results suggest that the FasT-Fix may be preferable to Meniscus Arrows for meniscal repair with minimal associated tissue morbidity.
Division of Sports Medicine, Department of Orthopaedic Surgery, University of Louisville, Louisville, Kentucky 40202, USA.
Peter
P
Borden
John
J
Nyland
David N M
DN
Caborn
David
D
Pienkowski
D000704:Analysis of Variance; D001696:Biomechanical Phenomena; D002102:Cadaver; D005260:Female; D006801:Humans; D008297:Male; D008592:Menisci, Tibial / Q000601:surgery*; D008875:Middle Aged; D013314:Stress, Mechanical; D013536:Suture Techniques