Movimento de gaveta em joelhos de cães submetidos à estabilização extracapsular após secção do ligamento cruzado cranial in vitro

Abstract

The Tightrope technique, that has been developed, aims to improve the extra-capsular stabilization with lateral suture through smaller incisions and creating isometric bone tunnels at points that allow the inclusion of a mechanism that overrides the movement of drawer and reduce the occurrence of serious complications. Therefore, the objective was to evaluate the Tightrope modified technique in canine cadaver knees in order to provide a simple and cost effective treatment for cranial cruciate ligament rupture (CCrLR). Experimentally; we used 20 pelvic limbs of ten canine corpses from the pathology service at the University of Northern Parana, which weighed between 6.3 and 24kg. To stabilize the cranial cruciate ligament (CCrL), which has been broken intentionally, the Tightrope modified technique was adopted by using modified polyamide yarn, pin and a grub screw to provide orthopedic bone fixation. Comparing the displacement values obtained during the movement of the drawer before the break of CCrL and after the surgical procedure was observed that the Tightrope modified technique provided signifcant stability for the majority (12 of 20) of the knees tested (P=0.0033). However, the stability of the technique was lower than the stability of the intact ligament.