Erik Cattrysse | Vrije Universiteit Brussel (original) (raw)
Papers by Erik Cattrysse
the ISB congress 2013, 2013
info:eu-repo/semantics/publishe
Experimental Gerontology
Please cite this article as: V. Knoop, A. Costenoble, A. Debain, et al., The interrelationship be... more Please cite this article as: V. Knoop, A. Costenoble, A. Debain, et al., The interrelationship between grip work, self-perceived fatigue and pre-frailty in community-dwelling octogenarians, Experimental Gerontology (2018),
Scientific Reports, 2019
The objective of the current study was to explore the potential of dynamic computed tomography to... more The objective of the current study was to explore the potential of dynamic computed tomography to detect kinematic changes, induced by sequential sectioning of the lateral collateral ligaments of the ankle, during full motion sequence of the talocrural joint. A custom-made device was used to induce cyclic controlled ankle inversion movement in one fresh frozen cadaver leg. A 256-slice CT scanner was used to investigate four different scenarios. Scenario 1 with all ligaments intact was first investigated followed by sequential section of the anterior talo-fibular ligament (Scenario 2), the calcaneo-fibular ligament (Scenario 3) and posterior talo-fibular ligament (Scenario 4). Off-line image processing based on semi-automatic segmentation and bone rigid registration was performed. Motion parameters such as translation, rotational angles and orientation and position of the axis of rotation were calculated. Differences between scenarios were calculated. Progressive increase of cranio-c...
Aging Clinical and Experimental Research
the ISB congress 2013, 2013
ABSTRACT Although a far more stable approach compared to the six degrees of freedom analysis, the... more ABSTRACT Although a far more stable approach compared to the six degrees of freedom analysis, the finite helical axis (FHA) struggles with interpretational difficulties among health professionals. The analysis of the 3D-motion axis has been used in clinical studies, but mostly limited to qualitative analysis. The aim of this study is to introduce a novel approach for the quantification of the FHA behavior and to investigate the effect of noise and angle intervals on the estimation of FHA parameters. A simulation of body movement has been performed introducing Gaussian noise on position and orientation of a virtual sensor showing linear relation between the simulated noise and the error in the corresponding parameter. FHA axis behavior was determined by calculating the intersection points of the FHA with a number of planes perpendicular to the FHA using the Convex Hull (CH) technique. The angle between the FHA and each of the IHA was also computed and its distribution was also analyzed. Input noise has an inversely proportional relationship with the angle steps of FHA estimation. The proposed FHA quantification approach can be useful to provide new approaches to researchers and to improve insight for the clinician in order to better understand joint kinematics.
Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, 2006
Nova Science Publishers, Jun 14, 2012
Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, 2005
Copyright © 2014 Daniele Saverino et al. This is an open access article distributed under the Cre... more Copyright © 2014 Daniele Saverino et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Although the occurrence of muscle spindles (MS) is quite high in most skeletal muscles of humans, few MS, or even absence, have been reported in digastric and mylohyoideus muscles. Even if this condition is generally accepted and quoted in many papers and books, observational studies are scarce and based onhistological sections of a lownumber of specimens.The aimof the present study is to confirm previous data, assessing MS number in a sample of digastric and mylohyoideus muscles. We investigated 11 digastric and 6 mylohyoideus muscles from 13 donors. Muscle samples were embedded in paraffin wax, cross-sectioned in a rostrocaudal direction, and stained using haematoxylin-eosin. A mean of 5.1 ± 1.1 (range 3–7) MS was found in digast...
A pubmed hit search teaches us that Human Body Composition (BC) is a frequently used issue in nut... more A pubmed hit search teaches us that Human Body Composition (BC) is a frequently used issue in nutrition publications. Body composition is a branch of human biology and is subject to variable interpretation by its users. Quantifying human BC plays an important role in monitoring health and disease but inaccurate interpretation of terms and techniques plays a key role in a series of classical errors. The purpose of this study is to make an overall review of general and specific errors that occur in BC e.g. in medicine and nutrition in particular. It was found that the transfer from morphological BC to chemical BC interpretations is the major origin of error. It all started with hydrodensitometry that for too long was "the" reference method, but being itself erroneous. This has caused different outcomes of methods assumed to measure the same variable producing the same outcome. More specific, it was found that the Body Mass Index as used in BC is a violation of biological evi...
The purpose of this study was to determine the intraand inter-examiner reliability of the ‘pre-ma... more The purpose of this study was to determine the intraand inter-examiner reliability of the ‘pre-manipulative position’ test at the cervical spine. Two manual therapists performed the pre-manipulative position test at 3 spinal levels and this was registered by an electromagnetic tracking device. The intra-examiner reliability was ‘fair’ to ‘good’ (ICC 0,67-0,94). The inter-examiner reliability was ‘poor’ to ‘good’ ( ICC 0,42 0,90) with, generally, larger confidence intervals and therefore has to be interpreted with caution.
Diagnostics, 2021
Dynamic computer tomography (CT) is an emerging modality to analyze in-vivo joint kinematics at t... more Dynamic computer tomography (CT) is an emerging modality to analyze in-vivo joint kinematics at the bone level, but it requires manual bone segmentation and, in some instances, landmark identification. The objective of this study is to present an automated workflow for the assessment of three-dimensional in vivo joint kinematics from dynamic musculoskeletal CT images. The proposed method relies on a multi-atlas, multi-label segmentation and landmark propagation framework to extract bony structures and detect anatomical landmarks on the CT dataset. The segmented structures serve as regions of interest for the subsequent motion estimation across the dynamic sequence. The landmarks are propagated across the dynamic sequence for the construction of bone embedded reference frames from which kinematic parameters are estimated. We applied our workflow on dynamic CT images obtained from 15 healthy subjects on two different joints: thumb base (n = 5) and knee (n = 10). The proposed method re...
Ageing Research Reviews, 2021
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
European Journal of Radiology, 2018
Objective: To perform an MR imaging-anatomical correlation to elucidate the anatomy of muscles, t... more Objective: To perform an MR imaging-anatomical correlation to elucidate the anatomy of muscles, tendons, and ligaments about the hallux as seen on MR imaging. Materials and Methods: Four fresh and 4 embalmed cadaver specimens were used for this study. The embalmed specimens and one fresh specimen were dissected by three investigators. The fresh specimens were preserved deep frozen. They were thawed and imaged with a 3 Tesla MR system. Proton density weighted images were obtained. The specimens were refrozen and sectioned with a band saw into 3 mm thick slices. Results: Musculotendinous structures were equally well seen in the fresh and embalmed specimens. The capsular ligaments could only be best studied in the fresh specimens. Proximal to the sesamoids the following muscle and tendon anatomy was delineated: the abductor hallucis tendon inserted on the medial sesamoid bone together with the medial belly of the flexor digitorum brevis; the adductor hallucis (transverse and oblique heads) inserted on the lateral sesamoid together with the lateral head of the flexor hallucis brevis. At the level of the sesamoid bones and distally, the ligaments making up the plantar plate were delineated, including the presesamoid band, the flexor hallucis longus pulley, the sesamometatarsal ligaments, the sesamophalangeal ligaments, and the capsular ligaments. Conclusion: MRI allows for accurate assessment of the complex anatomy of the hallux. At the level proximal to the sesamoids the muscle and tendon insertions are well demonstrated. At the level of the sesamoids and distally, the ligaments making up 'the plantar plate' are well demonstrated.
the ISB congress 2013, 2013
info:eu-repo/semantics/publishe
Experimental Gerontology
Please cite this article as: V. Knoop, A. Costenoble, A. Debain, et al., The interrelationship be... more Please cite this article as: V. Knoop, A. Costenoble, A. Debain, et al., The interrelationship between grip work, self-perceived fatigue and pre-frailty in community-dwelling octogenarians, Experimental Gerontology (2018),
Scientific Reports, 2019
The objective of the current study was to explore the potential of dynamic computed tomography to... more The objective of the current study was to explore the potential of dynamic computed tomography to detect kinematic changes, induced by sequential sectioning of the lateral collateral ligaments of the ankle, during full motion sequence of the talocrural joint. A custom-made device was used to induce cyclic controlled ankle inversion movement in one fresh frozen cadaver leg. A 256-slice CT scanner was used to investigate four different scenarios. Scenario 1 with all ligaments intact was first investigated followed by sequential section of the anterior talo-fibular ligament (Scenario 2), the calcaneo-fibular ligament (Scenario 3) and posterior talo-fibular ligament (Scenario 4). Off-line image processing based on semi-automatic segmentation and bone rigid registration was performed. Motion parameters such as translation, rotational angles and orientation and position of the axis of rotation were calculated. Differences between scenarios were calculated. Progressive increase of cranio-c...
Aging Clinical and Experimental Research
the ISB congress 2013, 2013
ABSTRACT Although a far more stable approach compared to the six degrees of freedom analysis, the... more ABSTRACT Although a far more stable approach compared to the six degrees of freedom analysis, the finite helical axis (FHA) struggles with interpretational difficulties among health professionals. The analysis of the 3D-motion axis has been used in clinical studies, but mostly limited to qualitative analysis. The aim of this study is to introduce a novel approach for the quantification of the FHA behavior and to investigate the effect of noise and angle intervals on the estimation of FHA parameters. A simulation of body movement has been performed introducing Gaussian noise on position and orientation of a virtual sensor showing linear relation between the simulated noise and the error in the corresponding parameter. FHA axis behavior was determined by calculating the intersection points of the FHA with a number of planes perpendicular to the FHA using the Convex Hull (CH) technique. The angle between the FHA and each of the IHA was also computed and its distribution was also analyzed. Input noise has an inversely proportional relationship with the angle steps of FHA estimation. The proposed FHA quantification approach can be useful to provide new approaches to researchers and to improve insight for the clinician in order to better understand joint kinematics.
Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, 2006
Nova Science Publishers, Jun 14, 2012
Finds and Results from the Swedish Cyprus Expedition: A Gender Perspective at the Medelhavsmuseet, 2005
Copyright © 2014 Daniele Saverino et al. This is an open access article distributed under the Cre... more Copyright © 2014 Daniele Saverino et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Although the occurrence of muscle spindles (MS) is quite high in most skeletal muscles of humans, few MS, or even absence, have been reported in digastric and mylohyoideus muscles. Even if this condition is generally accepted and quoted in many papers and books, observational studies are scarce and based onhistological sections of a lownumber of specimens.The aimof the present study is to confirm previous data, assessing MS number in a sample of digastric and mylohyoideus muscles. We investigated 11 digastric and 6 mylohyoideus muscles from 13 donors. Muscle samples were embedded in paraffin wax, cross-sectioned in a rostrocaudal direction, and stained using haematoxylin-eosin. A mean of 5.1 ± 1.1 (range 3–7) MS was found in digast...
A pubmed hit search teaches us that Human Body Composition (BC) is a frequently used issue in nut... more A pubmed hit search teaches us that Human Body Composition (BC) is a frequently used issue in nutrition publications. Body composition is a branch of human biology and is subject to variable interpretation by its users. Quantifying human BC plays an important role in monitoring health and disease but inaccurate interpretation of terms and techniques plays a key role in a series of classical errors. The purpose of this study is to make an overall review of general and specific errors that occur in BC e.g. in medicine and nutrition in particular. It was found that the transfer from morphological BC to chemical BC interpretations is the major origin of error. It all started with hydrodensitometry that for too long was "the" reference method, but being itself erroneous. This has caused different outcomes of methods assumed to measure the same variable producing the same outcome. More specific, it was found that the Body Mass Index as used in BC is a violation of biological evi...
The purpose of this study was to determine the intraand inter-examiner reliability of the ‘pre-ma... more The purpose of this study was to determine the intraand inter-examiner reliability of the ‘pre-manipulative position’ test at the cervical spine. Two manual therapists performed the pre-manipulative position test at 3 spinal levels and this was registered by an electromagnetic tracking device. The intra-examiner reliability was ‘fair’ to ‘good’ (ICC 0,67-0,94). The inter-examiner reliability was ‘poor’ to ‘good’ ( ICC 0,42 0,90) with, generally, larger confidence intervals and therefore has to be interpreted with caution.
Diagnostics, 2021
Dynamic computer tomography (CT) is an emerging modality to analyze in-vivo joint kinematics at t... more Dynamic computer tomography (CT) is an emerging modality to analyze in-vivo joint kinematics at the bone level, but it requires manual bone segmentation and, in some instances, landmark identification. The objective of this study is to present an automated workflow for the assessment of three-dimensional in vivo joint kinematics from dynamic musculoskeletal CT images. The proposed method relies on a multi-atlas, multi-label segmentation and landmark propagation framework to extract bony structures and detect anatomical landmarks on the CT dataset. The segmented structures serve as regions of interest for the subsequent motion estimation across the dynamic sequence. The landmarks are propagated across the dynamic sequence for the construction of bone embedded reference frames from which kinematic parameters are estimated. We applied our workflow on dynamic CT images obtained from 15 healthy subjects on two different joints: thumb base (n = 5) and knee (n = 10). The proposed method re...
Ageing Research Reviews, 2021
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
European Journal of Radiology, 2018
Objective: To perform an MR imaging-anatomical correlation to elucidate the anatomy of muscles, t... more Objective: To perform an MR imaging-anatomical correlation to elucidate the anatomy of muscles, tendons, and ligaments about the hallux as seen on MR imaging. Materials and Methods: Four fresh and 4 embalmed cadaver specimens were used for this study. The embalmed specimens and one fresh specimen were dissected by three investigators. The fresh specimens were preserved deep frozen. They were thawed and imaged with a 3 Tesla MR system. Proton density weighted images were obtained. The specimens were refrozen and sectioned with a band saw into 3 mm thick slices. Results: Musculotendinous structures were equally well seen in the fresh and embalmed specimens. The capsular ligaments could only be best studied in the fresh specimens. Proximal to the sesamoids the following muscle and tendon anatomy was delineated: the abductor hallucis tendon inserted on the medial sesamoid bone together with the medial belly of the flexor digitorum brevis; the adductor hallucis (transverse and oblique heads) inserted on the lateral sesamoid together with the lateral head of the flexor hallucis brevis. At the level of the sesamoid bones and distally, the ligaments making up the plantar plate were delineated, including the presesamoid band, the flexor hallucis longus pulley, the sesamometatarsal ligaments, the sesamophalangeal ligaments, and the capsular ligaments. Conclusion: MRI allows for accurate assessment of the complex anatomy of the hallux. At the level proximal to the sesamoids the muscle and tendon insertions are well demonstrated. At the level of the sesamoids and distally, the ligaments making up 'the plantar plate' are well demonstrated.