elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Contact | Deutsch
Fontsize: [-] Text [+]

Persisting side-to-side differences in bone mineral content, but not in muscle strength and tendon stiffness after anterior cruciate ligament reconstruction

Rittweger, Jörn and Reeves, Neil D and Narici, Marco V and Belavy, Daniel V and Maganaris, Constantinos N and Maffulli, Nicola (2011) Persisting side-to-side differences in bone mineral content, but not in muscle strength and tendon stiffness after anterior cruciate ligament reconstruction. Clinical Physiology and Functional Imaging, 31, pp. 73-79. DOI: 10.1111/j.1475-097X.2010.00982.x.

[img]
Preview
PDF - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader
160kB

Abstract

Tendon stiffness may be involved in limiting peak musculoskeletal forces and thus may constitute an upper limit for bone strength. The patellar tendon bone (PTB) graft, which is harvested from the patellar tendon during surgical reconstruction of the anterior cruciate ligament (ACL), is an ideal scenario to test this hypothesis. Eleven participants were recruited who had undergone surgical reconstruction of the ACL with a PTB graft 1–10 years prior to study inclusion. As previously reported, there was no side-to-side difference in thigh muscle cross-sectional area, in maximum voluntary knee extension torque, or in patellar tendon stiffness, suggesting full recovery of musculature and tendon. However, in the present study bone mineral content (BMC), assessed by peripheral quantitative computed tomography, was lower on the operated side than on the control side in four regions studied (P = 0.0019). Differences were less pronounced in the two sites directly affected by the operation (patella and tibia epiphysis) when compared to the more remote sites. Moreover, significant side-to-side differences were found in BMC in the trabecular compartment in the femoral and tibial epiphysis (P = 0.004 and P = 0.047, respectively) with reductions on the operated side, but increased in the patella (P = 0.00016). Cortical BMC, by contrast, was lower on the operated side a all sites except the tibia epiphysis (P = 0.09). These findings suggest that impaired recovery of BMC following ACL reconstruction is not because of lack of recovery of knee extensor strength or patellar tendon stiffness. The responsible mechanisms still remain to be determined.

Document Type:Article
Title:Persisting side-to-side differences in bone mineral content, but not in muscle strength and tendon stiffness after anterior cruciate ligament reconstruction
Authors:
AuthorsInstitution or Email of Authors
Rittweger, Jörnjoern.rittweger@dlr.de
Reeves, Neil DManchester Metropolitan University
Narici, Marco VManchester Metropolitan University
Belavy, Daniel VCharite - University Medicine Berlin
Maganaris, Constantinos NManchester Metropolitan University
Maffulli, NicolaQueen Mary University of London
Date:January 2011
Journal or Publication Title:Clinical Physiology and Functional Imaging
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:31
DOI:10.1111/j.1475-097X.2010.00982.x
Page Range:pp. 73-79
Status:Published
Keywords:bone strength; clinical physiology; injury; patellar tendon bone graft; peripheral Quantitative Computed Tomography
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W FR - Forschung unter Weltraumbedingungen (old)
DLR - Research area:Space
DLR - Program:W FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):W - Vorhaben Integrative Studien (old)
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Space Physiology
Deposited By: Jörn Rittweger
Deposited On:11 Feb 2011 11:55
Last Modified:12 Dec 2013 21:10

Repository Staff Only: item control page

Browse
Search
Help & Contact
Informationen
electronic library is running on EPrints 3.3.12
Copyright © 2008-2012 German Aerospace Center (DLR). All rights reserved.