Document Detail

Clinical evaluation of the effects of immobilization followed by remobilization and exercise on the metacarpophalangeal joint in horses.
MedLine Citation:
PMID:  11843131     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: To evaluate clinical effects of immobilization followed by remobilization and exercise on the metacarpophalangeal joint (MPJ) in horses. ANIMALS: 5 healthy horses. PROCEDURE: After lameness, radiographic, and force plate examinations to determine musculoskeletal health, 1 forelimb of each horse was immobilized in a fiberglass cast for 7 weeks, followed by cast removal and increasing amounts of exercise, beginning with hand-walking and ending with treadmill exercise. Lameness examination, arthrocentesis of both MPJ, single-emulsion radiographic examination, nuclear scintigraphic examination, ground-reaction force-plate analysis, and computed tomographic examination were done at various times during the study. RESULTS: All horses were lame in the immobilized MPJ after cast removal; lameness improved slightly with exercise. Force plate analysis revealed a significant difference in peak forces between immobilized and contralateral limbs 2 weeks after cast removal. Range of motion of the immobilized MPJ was significantly decreased, and joint circumference was significantly increased, compared with baseline values, during the exercise period. Osteopenia was subjectively detected in the immobilized limbs. Significant increase in the uptake of radionucleotide within bones of the immobilized MPJ after cast removal and at the end of the study were detected. Loss of mineral opacity, increased vascular channels in the subchondral bone, and thickening within the soft tissues of the immobilized MPJ were detected. CONCLUSIONS AND CLINICAL RELEVANCE: Results indicate that 8 weeks of enforced exercise after 7 weeks of joint immobilization did not restore joint function or values for various joint measurements determined prior to immobilization.
Philip D Van Harreveld; James D Lillich; Christopher E Kawcak; Earl M Gaughan; Ronald M Mclaughlin; Richard M Debowes
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of veterinary research     Volume:  63     ISSN:  0002-9645     ISO Abbreviation:  Am. J. Vet. Res.     Publication Date:  2002 Feb 
Date Detail:
Created Date:  2002-02-14     Completed Date:  2002-07-31     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  0375011     Medline TA:  Am J Vet Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  282-8     Citation Subset:  IM    
Department of Clinical Sciences, College of Veterinary Medicine, Kansas State University, Manhattan 66506-5606, USA.
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MeSH Terms
Absorptiometry, Photon / veterinary
Bone Diseases, Metabolic / veterinary
Horses / anatomy & histology*
Lameness, Animal / pathology
Metacarpophalangeal Joint / anatomy & histology*,  radiography
Microradiography / veterinary
Physical Conditioning, Animal / physiology*
Random Allocation
Restraint, Physical*

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

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