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Evidence of tendon ...
Evidence of tendon microtears due to cyclical loading in an in vivo tendinopathy model
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Nakama, L H (författare)
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King, K B (författare)
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- Abrahamsson, Sven (författare)
- Lund University,Lunds universitet,Institutionen för kliniska vetenskaper, Malmö,Medicinska fakulteten,Department of Clinical Sciences, Malmö,Faculty of Medicine
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Rempel, D M (författare)
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(creator_code:org_t)
- 2006
- 2005
- Engelska.
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Ingår i: Journal of Orthopaedic Research. - : Wiley. - 1554-527X .- 0736-0266. ; 23:5, s. 1199-1205
- Relaterad länk:
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Abstract
Ämnesord
Stäng
- Tendon injuries at the epicondyle can occur in athletes and workers whose job functions involve repetitive, high force hand activities, but the early pathophysiologic changes of tendon are not well known. The purpose of this study was to evaluate early tendon structural changes, specifically the formation of microtears, caused by cyclical loading. The Flexor Digitorum Profundus (FDP) muscle of nine New Zealand White rabbits was stimulated to contract repetitively for 80 h of cumulative loading over 14 weeks. The contralateral limb served as a control, The tendon at the medial epicondyle insertion site was harvested, sectioned, and stained. Microtears were quantified, using image analysis software, in four regions of the tendon, two regions along the enthesis and two distal to the enthesis. The tear density (loaded: 1329 +/- 546 tears/mm(2); unloaded: 932 474 tears/mm(2)) and mean tear size (loaded: 18.3 +/- 6.1 mu m(2); unloaded: 14.0 +/- 4.8 mu m(2)) were significantly greater in the loaded limb (p < 0.0001) across all regions compared to the unloaded contralateral limb. These early microstructural changes in a repetitively loaded tendon may initiate a degenerative process that leads to tendinosis.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Ortopedi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Orthopaedics (hsv//eng)
Nyckelord
- microtears
- tendinopathy
- tendon
- overuse
- epicondylitis
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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