Five patellar proximodistal positioning indices compared in clinically normal Greenland sled dogs

Abstract

Vet J. 2012 Aug;193(2):529-34. doi: 10.1016/j.tvjl.2012.01.003. Epub 2012 Feb 8. Five patellar proximodistal positioning indices compared in clinically normal Greenland sled dogs. Miles JE, Dickow M, Nielsen DH, Jensen BR, Kirpensteijn J, Svalastoga EL, Eriksen T. Source Department of Small Animal Clinical Sciences, Faculty of Life Sciences, University of Copenhagen, Denmark. jami@life.ku.dk Abstract Patellar luxation in large-breed dogs is associated with abnormal proximodistal patellar positioning. Using a clinically normal population of Greenland sled dogs, measurement reliability and the effect of limb position were compared for five patellar proximodistal positioning indices based on the Insall-Salvati (IS), modified Insall-Salvati (mIS), de Carvalho (dC), patellotrochlear (PT) and Blackburne-Peel (BP) indices. Indices were measured at one knee angle in 44 dogs and two knee angles in 10 dogs. Index susceptibility to error was modelled for different errors in knee angle estimation. Two reported techniques for determining knee angle were compared in a fox hind limb model. Indices dC and PT were significantly affected by knee angle (P