| Muscle tissue atrophy, extramuscular and intramuscular fat accumulation, and fat gradient after delayed repair of the supraspinatus tendon: A comparative study in the rabbit. | |
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MedLine Citation:
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PMID: 22034220 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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To investigate the atrophy of supraspinatus (SSP) muscle tissue and accumulation of extramuscular fat (e-fat) and intramuscular fat (i-fat) after delayed repair of the SSP tendon, and to correlate CT findings with histology. One SSP tendon of 36 rabbits was transected, then repaired in groups of 12 at 4, 8, or 12 weeks and then followed for 12 weeks. Thirty-six normal shoulders served as controls. We compared the SSP muscle, e-fat weights and volumes, muscle tissue and i-fat areas on histology, e-fat and attenuation values on CT between the experimental and control shoulders. CT-to-histology correlations were run. SSP muscle tissue atrophy, e-fat and i-fat accumulation were present after tendon repair delayed by 4, 8, or 12 weeks (all p < 0.05). Both e-fat and i-fat accumulation presented increasing proximal-to-distal gradients (both p < 0.05). CT depicted the muscle tissue atrophy, e-fat and i-fat accumulation, and increasing proximal-to-distal gradients (all p < 0.05). We found strong CT-to-histology correlations (p < 0.05). SSP muscles showed tissue atrophy, e-fat and i-fat accumulation after successful SSP tendon repairs delayed by 4, 8, or 12 weeks. Subtracting i-fat from the muscle area determined the SSP muscle tissue atrophy. Increasing proximal-to-distal fat gradients were diagnostic if not pathognomonic of an initial SSP tendon disruption. © 2011 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res. |
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Authors:
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Guy Trudel; Stephen E Ryan; Kawan Rakhra; Hans K Uhthoff |
Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-10-27 |
Journal Detail:
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Title: Journal of orthopaedic research : official publication of the Orthopaedic Research Society Volume: - ISSN: 1554-527X ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-28 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8404726 Medline TA: J Orthop Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Orthopaedic Research Society. |
Affiliation:
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Bone and Joint Laboratory, University of Ottawa, 451 Smyth Rd, Ottawa, Ontario, Canada K1H 8M5. gtrudel@ottawahospital.on.ca. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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