Kinematics of the equine temporomandibular joint

American Journal of Veterinary Research
S J BoninThomas J Johnson

Abstract

To develop a method of measuring 3-dimensional kinematics of the temporomandibular joint (TMJ) in horses chewing sweet feed. 4 mature horses that had good dental health. Markers attached to the skin over the skull and mandible were tracked by an optical tracking system. Movements of the mandible relative to the skull were described in terms of 3 rotations and 3 translations. A virtual marker was created on the midline between the rami of the mandibles at the level of the rostral end of the facial crest to facilitate observation of mandibular movements. During the opening stroke, the virtual midline mandibular marker moved ventrally, laterally toward the chewing side, and slightly caudally. During the closing stroke, the marker moved dorsally, medially, and slightly rostrally. During the power stroke, the mandible slid medially and dorsally as the mandibular cheek teeth moved across the occlusal surface of the maxillary cheek teeth. The 4 horses had similar chewing patterns, but the amplitudes varied among horses. The TMJ allows considerable mobility of the mandible relative to the skull during chewing. The method presented in this report can be used to compare the range of motion of the TMJ among horses with TMJ disease or dent...Continue Reading

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Citations

May 9, 2012·Anatomy Research International·Alberto ArencibiaMiguel A Rivero
Oct 18, 2006·Journal of the American Veterinary Medical Association·James L Carmalt, Andrew L Allen
May 25, 2007·Equine Veterinary Journal·S J BoninT Johnston
Nov 26, 2008·Equine Veterinary Journal·M J RodríguezA Agut
May 22, 2010·Equine Veterinary Journal·M J RodríguezR Latorre
Feb 14, 2015·Journal of Applied Animal Welfare Science : JAAWS·Fernando MataCharlotte Bishop
Nov 11, 2017·Tissue Engineering. Part B, Reviews·Alejandro J AlmarzaMichael Detamore
Nov 14, 2017·Journal of Veterinary Dentistry·Laura ListmannCarsten Staszyk
Jun 3, 2008·The Veterinary Record·P H L RamzanA Thompson

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