Tibial displacement with stifle joint flexion and cranial cruciate ligament transection in the dog

N. Kanno; Y. Hara; S. Fukano; H. Fujie; H. Ochi; Y. Fujita; H. Yasuji; Y. Nezu; T. Yogo; M. Tagawa

doi:10.3415/VCOT-13-06-0080

Veterinary and Comparative Orthopaedics and Traumatology, Inhaltsverzeichnis

Vet Comp Orthop Traumatol 2014; 27(04): 277-284
DOI: 10.3415/VCOT-13-06-0080

Original Research

Schattauer GmbH

Tibial displacement with stifle joint flexion and cranial cruciate ligament transection in the dog

An ex vivo study using a robotic simulato

N. Kanno

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

,

Y. Hara

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

,

S. Fukano

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

,

H. Fujie

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

,

H. Ochi

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

,

Y. Fujita

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

,

H. Yasuji

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

,

Y. Nezu

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

,

T. Yogo

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

,

M. Tagawa

¹Division of Veterinary Surgery, Department of Veterinary Science, Faculty of Veterinary Medicine, Nippon Veterinary and Life Science University, Tokyo Japan

› Institutsangaben

Abstract

Summary

Objective: The aim of this study was to investigate the biomechanical effects of cranial cruciate ligament (CrCL) transection on stifle stability at three different stifle joint flexion angles using a robotic system.

Methods: This was an ex vivo biomechanical study. Stifles (n = 6) were collected from the cadavers of Beagles weighing 10.5–12.0 kg. Six stifle joints were dissected, potted, and secured to the manipulator arms of a robotic simulator. With the stifle joint angle maintained at either hyperextension (151°), 135° or 90°, stability was assessed by application of a 50 N load in either the cranial-caudal (CrCd test) or proximal-distal (PD test) directions. The stifle was given a cranial-caudal load of 50 N (CrCd test). A proximal-distal compression load of 50 N was then administered by the manipulator (proximal-distal test: PD test). The change in three-dimensional kinematics of the intact and the CrCL-transected stifles was compared between hyperextension, and 135° and 90° flexion for the CrCd and PD load conditions. A value of p <0.05 was considered statistically significant.

Results: The cranial tibial displacements in the PD tests of the CrCL-transected stifles at 135° (8.4 ± 1.2 mm) and at 90° (8.1 ± 1.9 mm) were significantly greater than the displacement at 151.5° (5.1 ± 1.6 mm) (p = 0.004 and p = 0.012 respectively).

Clinical significance: The canine stifle exhibited the most instability when the stifle flexion angle was 135°.

Keywords

Stifle - six degrees of freedom - biomechanics - cranial cruciate ligament - robotic simulator

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Referenzen

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