title: Clinical approach to determine the contribution of the palmar and palmar metacarpal nerves to the innervation of the equine fetlock joint.
abstract: To determine the sensory nerve supply of the metacarpophalangeal joint, lameness was induced in eight horses by injecting the joint with a glycerin suspension of glass micropheres. When the medial and lateral palmar nerves were anesthetized in 4 horses, there was noticeable improvement in the gait, but each horse remained lame. When the medial and lateral palmar metacarpal nerves were also anesthetized, 3 of the 4 horses became sound. To confirm the results of local anesthesia, neurectomies were performed on a second group of four horses. The lameness was alleviated only upon resection of both the palmar nerves and the palmar metacarpal nerves.
mesh_terms: D000772:Anesthesia, Local / Q000662:veterinary; D000818:Animals; D003714:Denervation / Q000662:veterinary; D005552:Forelimb / Q000294:innervation*; D005990:Glycerol; D006734:Horse Diseases / Q000139:chemically induced / Q000503:physiopathology; D006736:Horses / Q000033:anatomy & histology* / Q000502:physiology; D007596:Joints / Q000294:innervation*; D007794:Lameness, Animal / Q000139:chemically induced / Q000503:physiopathology; D008012:Lidocaine; D008663:Metacarpus / Q000294:innervation*
chemical_list: D008012:Lidocaine; D005990:Glycerol