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In vivo measurements of human bone deformation using optical segment tracking: surgical approach and validation in a three-point bending test

Ganse, Bergita and Yang, Pengfei and Brüggemann, Gert-Peter and Müller, L.P. and Rittweger, Jörn and Koy, Timmo (2014) In vivo measurements of human bone deformation using optical segment tracking: surgical approach and validation in a three-point bending test. Journal of Musculoskeletal and Neuronal Interactions, 14 (1), pp. 95-103. International Society of Musculoskeletal and Neuronal Interactions. ISSN 1108-7161

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Abstract

The purpose of the study was to validate optical segment tracking, a new method for in vivo human tibia deformation measurements and to assess bending in a three-point bending test. The approach relies upon optical motion capturing of reflecting marker clusters affixed to the bone via screws inserted three millimeters into the corticalis in local anesthesia. The method was tested in five healthy subjects. Screws were left in place for six to eight hours and a variety of exercises performed. A pain questionnaire was used to assess pain levels. PQCT-images were taken to locate screw holes in the bone. A three-point bending test was performed and repeatability evaluated. The new method shows good feasibility though this was previously considered impossible by many experts. Local anesthesia works for screw implantation and explantation. Results show linearity with an average of 0.25 degrees per 10 kg of weight applied with good repeatability (average variation coefficient 8%). Optical segment tracking is feasible for human in vivo bone deformation measurements. There is a variety of possible clinical and experimental applications including stability testing of osteosyntheses and joints, monitoring of bone healing, evaluation of exercises in physiotherapy, and assessment of bone deformation patterns in bone disease.

Item URL in elib:https://elib.dlr.de/88487/
Document Type:Article
Title:In vivo measurements of human bone deformation using optical segment tracking: surgical approach and validation in a three-point bending test
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Ganse, Bergitabergita.ganse (at) dlr.deUNSPECIFIED
Yang, PengfeiPengfei.Yang (at) dlr.deUNSPECIFIED
Brüggemann, Gert-PeterDeutsche SporthhochschuleUNSPECIFIED
Müller, L.P.University of Cologne,UNSPECIFIED
Rittweger, Jörnjoern.rittweger (at) dlr.deUNSPECIFIED
Koy, Timmotimmo.koy (at) uk-koeln.deUNSPECIFIED
Date:March 2014
Journal or Publication Title:Journal of Musculoskeletal and Neuronal Interactions
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:14
Page Range:pp. 95-103
Publisher:International Society of Musculoskeletal and Neuronal Interactions
ISSN:1108-7161
Status:Published
Keywords:Motion Capturing, Visual Analog Scale, Bone Deformation, pQCT, Three-point-bending
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Vorhaben Effects of Mikro-g und Hyper-g
Location: Köln-Porz
Institutes and Institutions:Institute of Aerospace Medicine > Space Physiology
Deposited By: Becker, Christine
Deposited On:12 Mar 2014 12:34
Last Modified:30 Aug 2017 10:18

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