Document Detail


Ultrasonographic diagnosis of coxofemoral subluxation in horses.
MedLine Citation:
PMID:  19697609     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The clinical and ultrasonographic features of seven horses with coxofemoral subluxation are presented. Affected horses included five adult geldings (11-20 years), one large pony (6 years) and a 3-month-old filly. All were lame at the walk except for the pony with grade 3/5 lameness. Lameness was acute in all horses, but three horses progressed after initial improvement. Crepitus, muscle atrophy, and pelvic asymmetry were inconsistent findings. Ultrasonographic diagnosis of subluxation required dynamic visualization of femoral head displacement from the acetabulum while placing weight on the affected limb and subsequent replacement into its normal position upon limb resting. Acetabular rim fractures and joint effusion were visible regardless of weight bearing status in six horses each. No fractures were identified in the pony; the only patient with a good outcome. Six horses had a poor outcome with severe chronic lameness, four of which were euthanized. Postmortem ventrodorsal radiographs obtained in two horses confirmed subluxation only on extended limb projections, but not on hip-flexed projections. Acetabular rim fractures were not visible radiographically in either horse but were confirmed at necropsy. Subluxation was due to an elongated but intact ligament of the head of the femur in both horses. Osteoarthrosis was evident ultrasonographically, radiographically, and at necropsy. Dynamic ultrasonography was readily performed in the standing horse and produced diagnostic images with a low frequency curvilinear transducer. The apparent poor prognosis for horses with subluxation and acetabular fracture illustrate the importance of this imaging technique to identify affected horses.
Authors:
Suzanne Brenner; Mary Beth Whitcomb
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association     Volume:  50     ISSN:  1058-8183     ISO Abbreviation:  -     Publication Date:    2009 Jul-Aug
Date Detail:
Created Date:  2009-08-24     Completed Date:  2009-10-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9209635     Medline TA:  Vet Radiol Ultrasound     Country:  United States    
Other Details:
Languages:  eng     Pagination:  423-8     Citation Subset:  IM    
Affiliation:
Veterinary Medical Teaching Hospital, School of Veterinary Medicine, University of California, Davis, CA 95616, USA.
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MeSH Terms
Descriptor/Qualifier:
Acetabulum / ultrasonography
Animals
Femur Head / ultrasonography
Hip Dislocation / ultrasonography*
Hip Joint / ultrasonography*
Horse Diseases / ultrasonography*
Horses
Lameness, Animal / etiology*
Ultrasonography / veterinary

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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