| Non-uniform displacement within the Achilles tendon during passive ankle joint motion. | |
| | |
MedLine Citation:
|
PMID: 22120840 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
|
PURPOSE: An initial step in the understanding of Achilles tendon dynamics is to investigate the effects of passive motion, thereby minimising muscle activation and reducing internal joint forces. Internal tendon dynamics during passive ankle joint motion have direct implications for clinical rehabilitation protocols after Achilles tendon surgery. The aim of this study was to test the hypothesis that tendon tissue displacement is different in different layers of the Achilles tendon during controlled passive ankle joint movements. METHODS: Ultrasound imaging was conducted on the right Achilles tendon of nine healthy recreationally active males. Standardised isokinetic passive dorsi-plantar-flexion movements were performed with a total range of motion of 35°. The tendon was divided into superficial, central and deep layers in the resulting B-mode ultrasound images viewed in the sagittal plane. A block-matching speckle tracking algorithm was applied post-process, with kernels for the measurement of displacement placed in each of the layers. RESULTS: The mean (SD) displacement of the Achilles tendon during passive dorsiflexion was 8.4 (1.9) mm in the superficial layer, 9.4 (1.9) mm in the central portion and 10.4 (2.1) mm in the deep layer, respectively. In all cases, the movement of the deep layer of the tendon was greater than that of the superficial one (P < 0.01). CONCLUSIONS: These results, achieved in vivo with ultrasonographic speckle tracking, indicated complex dynamic differences in different layers of the Achilles tendon, which could have implications for the understanding of healing processes of tendon pathologies and also of normal tendon function. |
| | |
Authors:
|
Anton Arndt; Ann-Sophie Bengtsson; Michael Peolsson; Alf Thorstensson; Tomas Movin |
Publication Detail:
|
Type: JOURNAL ARTICLE Date: 2011-11-27 |
Journal Detail:
|
Title: Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA Volume: - ISSN: 1433-7347 ISO Abbreviation: - Publication Date: 2011 Nov |
Date Detail:
|
Created Date: 2011-11-28 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9314730 Medline TA: Knee Surg Sports Traumatol Arthrosc Country: - |
Other Details:
|
Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
|
Division of Orthopaedic Surgery, Clintec, Karolinska Institute, Karolinska University Hospital, K54, 141 86, Stockholm, Sweden, toni.arndt@ki.se. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: The influence of patella height on intra-operative soft tissue balance in posterior-stabilized total...
Next Document: Assessment of Cognitive Symptoms in Prodromal and Early Huntington Disease.