Open Veterinary Journal

Open Veterinary Journal

Peer-Reviewed Journal 
ISSN 2218-6050 (Online), ISSN 2226-4485 (Print) 

"Original Research"

Validation of an optical, computer-assisted technique for intraoperative tracking of 3-dimensional canine stifle joint motion

Cecilia Signorelli(1), Filippo Cinti(2*), Stefano Zaffagnini(3), Luciano Pisoni(4) and Nicola Francesco Lopomo(5)

1- IRCCS Istituto Ortopedico Rizzoli, Laboratorio di Biomeccanica e Innovazione Tecnologica, Bologna , Italy
2- Eastcott Referral Hospital, Edison Park, Swindon, Wiltshire, UK
3- IRCCS Istituto Ortopedico Rizzoli, Clinica Ortopedica e Traumatologica II, Bologna, Italy

4- Università degli studi di Bologna, Dipartimento di Scienze Mediche Veterinarie, Bologna, Italy
5- Università degli Studi di Brescia, Dipartimento di Ingegneria dell’Informazione, Brescia, Italy


Background: Cranial cruciate ligament (CCL) rupture is the most common orthopedic pathology in dog and in men. In human, optical computer-assisted technique is considered a repeatable and reliable method for the biomechanical assessment of joint kinematics and laxity in case of CCL surgery.

Aim: To evaluate the repeatability and reliability afforded by clinical tests in terms of laxity measured by means of a computer-assisted tracking system in two canine CCL conditions: CCL-Intact, CCL-Deficient.

Methods: Fourteen fresh frozen canine stifles were passively subjected to Internal/External (IE) rotation at 120° of flexion and Cranial drawer test (CC). To quantify the repeatability and the reliability, Intraclass Correlation Coefficient (ICC) and the mean percent error were evaluated (Δ r %).

Results: The study showed a very good intra-class correlation, before and after CCL resection for kinematics tests. It was found a minimum ICC=0.73 during the IE rotation in CCL-Intact and a maximum value of ICC=0.97 for the CC displacement in CC-Deficient. IE rotation with CCL-Intact is the condition with the greatest Δ r %=14% while the lowest Δ r %=6% was obtained for CC displacement in CCL-Deficient.

Conclusion: The presented work underlined the possibility of using a computer-assisted method also for biomechanical studies concerning stifle kinematics and laxity.

Keywords: Computer-assisted technique, Cranial cruciate ligament, Dog, Stifle joint.

Cite this paper:
Signorelli, C., Cinti, F., Zaffagnini, S., Pisoni, L. and Lopomo, N.F. 2020. Validation of an optical, computer-assisted technique for intraoperative tracking of 3-dimensional canine stifle joint motion. Open Vet. J. 10(1), 86-93.