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Clinical relevance of the microvasculature of the equine proximal sesamoid bone.

Authors
  • Trumble, T N1
  • Arnoczky, S P
  • Stick, J A
  • Stickle, R L
  • 1 Department of Large Animal Clinical Sciences, College of Veterinary Medicine, Michigan State University, East Lansing 48824, USA.
Type
Published Article
Journal
American Journal of Veterinary Research
Publisher
American Veterinary Medical Association
Publication Date
Jun 01, 1995
Volume
56
Issue
6
Pages
720–724
Identifiers
PMID: 7653878
Source
Medline
License
Unknown

Abstract

The blood supply to the proximal sesamoid bone of the equine forelimb was examined in 18 cadaver limbs from adult horses, using x-ray computed tomography and a tissue-clearing (Spalteholz) technique. Results of the study indicated that the proximal sesamoid bones were supplied by multiple branches of the medial and lateral palmar digital arteries, which entered the proximal half of the bones on their non-articular, abaxial surface. After entering the bone, the vessels traverse dorsally, axially, and distally, arborizing into several smaller branches that appear to supply the entire bone. The major branches of these vessels reside in bony canals, the orientation and distribution of which parallel the radiographic lucencies seen in horses with sesamoiditis and correspond to the configuration of apical fracture patterns.

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