R. Kdolsky, R. Reihsner, R. Schabus, R. Beer:
"Measurement of stress-strain relationships and stress-relaxation in various synthetic ligaments";
Knee Surgery, Sports Traumatology, Arthroscopy,
In an experimental study various synthetic augmentation devices for knee ligament surgery were tested in a servo-mechanical universal tensile testing machine under uniaxial loading. Two tests were done to elucidate the mechanical behaviour: stress relaxation and stress-strain relationship. Regarding the point of failure or rupture, the strongest ligament was the Trevira et 1800 N, followed by the 8-mm-wide Kennedy LAD at 1720 N. Ar a working load of 500 N the Gore-tex band, the Trevira, and the Kennedy-LAD stretched by between 2% and 3%. For synthetic augmentation in repair of proximally ruptured anterior cruciate ligaments we recommend a synthetic ligament that reaches failure point at a load of more than 1000 N with an alteration in length of less than 5%. Otherwise, stress protection of the biological reconstruction in full extension will be impossible. The requisite criteria were fulfilled by the Trevira, Kennedy-LAD and Gore-tex synthetic ligaments.
Keywords: knee ligament surgery, synthetic augmentation device, mechanical behaviour, uniaxial loading
Erstellt aus der Publikationsdatenbank der Technischen Universitšt Wien.