CRANIAL CRUCIATE LIGAMENT RUPTURE: A MULTI-BODY ANALYSIS COMPARING CORRECTIVE TIBIAL OSTEOTOMIES

Aim: The aim of this study is to consider a new kind of tibial osteotomy for the treatment of Cranial Cruciate Ligament (CrCL) deficient stifle, that is the so called Center Of Rotation of Angulation CORA Based Leveling Osteotomy (CBLO), and to compare its outcome with the Tibial Plateau Leveling Os...

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Bibliographic Details
Published in:International journal of artificial organs 2014-01, Vol.37 (8), p.592-592
Main Authors: Bignardi, C, Zanetti, E M, Terzini, M, Pisani, G, Audenino, A L
Format: Article
Language:English
Subjects:
Biocompatibility
Biomedical materials
Computer programs
Femur
Insertion
Leveling
Ligaments
Tibia
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Summary:Aim: The aim of this study is to consider a new kind of tibial osteotomy for the treatment of Cranial Cruciate Ligament (CrCL) deficient stifle, that is the so called Center Of Rotation of Angulation CORA Based Leveling Osteotomy (CBLO), and to compare its outcome with the Tibial Plateau Leveling Osteotomy (TPLO), one of the most currently used osteotomies. Methods: A Sawbones(R) (Pacific Research Laboratories) model of a canine right knee was used to generate the IGES geometries by means of a laser scanning system. The model included femur, tibia, fibula, menisci, patella, patellar ligament, medial and lateral femoro-patellar ligaments, tendon of insertion of the quadriceps muscle group, cruciate ligament. Solidworks (Dassault Systemes) was used to perform the tibial osteotomies and to identify the insertion and origin points of the ligaments. Four multi-body models of the stifle were then created in Adams (MSC Software). They included the femoro-tibial joint (FTJ), ligaments and contact forces. These four models represented a physiological, CrCL-ruptured, post-TPLO, post-CBLO stifle, respectively. Finally, a cranial drawer test was performed by applying a 44.5 N force to the tibia with or without applying a force to compress the femur against the tibia. Results and Conclusions: There was no significant difference between the pathologic and post-surgery condition for a compressive force inferior or equal to 40 N, while craniocaudal stability was not reached, even when the CrCL is intact, unless the compressive force reached 150 N. Osteotomies outcomes are far better than pathologic condition. With reference to the comparison between TPLO and CBLO. the latter proved to be more stable.
ISSN:0391-3988
DOI:10.5301/ijao.5000346