M. Rooze - Academia.edu (original) (raw)
Papers by M. Rooze
Biological Effects and Dosimetry of Static and ELF Electromagnetic Fields, 1985
During the last two decades, the use of ELF magnetic and electric fields to stimulate bone growth... more During the last two decades, the use of ELF magnetic and electric fields to stimulate bone growth and repair knew an increasing interest and its approach evolves from empirical to experimental methods.
Anatomical Record, 1994
The observation of thirty dissections of intrinsic muscles of the thumb provides some information... more The observation of thirty dissections of intrinsic muscles of the thumb provides some information differing from earlier anatomical studies. The abductor pollicis brevis and the opponens pollicis have been divided into muscles having six or two fascicles (or bellies), respectively. The adductor pollicis muscle has been separated into nine fascicles. Many variations were observed absence of fascicles, presence of atrophied or supplementary fascicles, or fascicles with varying insertions sites. Neither head of the flexor pollicis brevis muscle seemed to have any fascicles. The distal insertion of its superficial head observed in this work is not in accordance with the usual description found in the literature. A new classification of the thenar muscles is presented based on the present observations. Many variations were observed some fascicles were absent, others were supplementary or atrophied, and some had variable insertions. The importance and the individual variations of the fascicles are discussed.
Magma: Magnetic Resonance Materials in Physics, Biology, and Medicine, 1997
Classical dissection may give unsatisfactory results because of the presence of artifacts due to ... more Classical dissection may give unsatisfactory results because of the presence of artifacts due to both the embalming process and displacement of the anatomical structures. This spatial disturbance could explain the divergent descriptions found in the literature about the presence, or the absence, of an insertion of the extensor digitorum muscle (ED) at the base of the first phalanx (P1). Preliminary experiments by Van Sint Jan et al. (1996) found the same contradiction: dissections did not show a real tendon attachment, whereas a functional experiment seemed to show that "something" should exist between ED and P1 to explain the results. This paper presents the results of an in vitro MRI study of this anatomical area. A 7-T NMR microscope was used to collect accurate, noninvasive data. Subsequently, surface rendering was performed to visualize the structures in a threedimensional manner. The results of this MRI study, together with functional data obtained in an earlier study, showed that no real insertion of ED on P1 exists. However, some collagenic fibers were occasionally observed running from the ventral aspect of ED to both P1 and the metacarpophalangeal joint capsule. Those few collagenic fibers would play a secondary role in the extension of P1.
Journal of Biomechanics, 2011
Quadric surface fitting of joint surface areas is often performed to allow further processing of ... more Quadric surface fitting of joint surface areas is often performed to allow further processing of joint component size, location and orientation (pose), or even to determine soft tissue wrapping by collision detection and muscle moment arm evaluation. This study aimed to determine, for the femoral bone, if the position of its morphological joint centers and the shape morphology could be approximated using regression methods with satisfactory accuracy from a limited amount of palpable anatomical landmarks found on the femoral bone surface. The main aim of this paper is the description of the pipeline allowing on one hand the data collection and database storage of femoral bone characteristics, and on the other hand the determination of regression relationships from the available database. The femoral bone components analyzed in this study included the diaphysis, all joint surfaces (shape, location and orientation of the head, condyles and femoro-patellar surface) and their respective spatial relationships (e.g., cervico-diaphyseal angle, cervico-bicondylar angle, intercondylar angle, etc.). A total of 36 morphological characteristics are presented and can be estimated by regression method in in-vivo applications from the spatial location of 3 anatomical landmarks (lateral epicondyle, medial epicondyle and greater trochanter) located on the individual under investigation. The method does not require any a-priori knowledge on the functional aspect of the joint. In-vivo and in-vitro validations have been performed using data collected from medical imaging by virtual palpation and data collected directly on a volunteer using manual palpation through soft tissue. The prediction accuracy for most of the 36 femoral characteristics determined from virtual palpation was satisfactory, mean (SD) distance and orientation errors were 2.7(2.5) mm and 6.8(2.7)1, respectively. Manual palpation data allowed good accuracy for most femoral features, mean (SD) distance and orientation errors were 4.5(5.2) mm and 7.5(5.3)1, respectively. Only the in-vivo location estimation of the femoral head was worse (position error ¼ 23.2 mm). In conclusion, results seem to show that the method allows in-vivo femoral joint shape prediction and could be used for further development (e.g., surface collision, muscle wrapping, muscle moment arm estimation, joint surface dimensions, etc.) in gait analysis-related applications.
Computer Methods in Biomechanics and Biomedical Engineering, 2005
Computer Methods in Biomechanics and Biomedical Engineering, 2005
Illusions are numerous and varied. At all times, they intrigued mankind and drew the attention of... more Illusions are numerous and varied. At all times, they intrigued mankind and drew the attention of researchers in various fields. It is that the illusions, by the wealth of information that they provide us, constitute privileged phenomena to study for a better understanding of perception. A particular form of illusion is related to the illusions of weight. Typically, these illusions appear when the weight that we perceive of an object is different from the actual weight of this object. This question of the relation between actual weight and perceived weight of an object is a significant question to understand the mechanisms of perception of weight, but it remains at the present time still open. The exploratory study, which will be presented, relates to an illusion of weight, which, to our knowledge, was never studied in a systematic way: the illusion of “2 make less than 1”. This illusion appears when a person, requested successively to raise a small heavy cylinder (located on a large light cylinder) then the large light cylinder (and thus both cylinders) perceives the rising of the whole as being lighter than the rising of the small upper cylinder only. To explain these size-weight illusions, various explanatory parameters were proposed either only perceptive, or perceptive and motor. The movement was often studied through the analysis of speed and force of rising. Studies (Bruno 1986) seem to show us that this parameter, even if its role is not always clearly understood, holds a significant place in the realization of the illusion. Two assumptions were put forward: The presence and the intensity of the illusion of “2 make less than 1” is dependent on the visual knowledge of the illusory device. The illusion of “2 make less than 1” displays a pattern of movement specific to cylinder(s) raised. 2. Materials and methods
Clinical Biomechanics, 1999
ABSTRACT Establishment of a normal database and clinical reference of active global cervical spin... more ABSTRACT Establishment of a normal database and clinical reference of active global cervical spine motion ranges and patterns using a commercial electrogoniometer. Three-dimensional cervical motion ranges and patterns were analyzed in 250 asymptomatic volunteers. In vivo out-of-plane motion patterns of the cervical spine have not yet been reported in large populations, but could be of clinical interest. In 250 subjects (aged 14-70 yr), motion range and patterns between the first thoracic vertebra and the head were analyzed for flexion-extension, lateral bending, rotation in neutral sagittal plane position and in full flexion using the CA 6000 Spine Motion Analyzer. Average motion range in the sagittal plane was 122 degrees (SD: 18 degrees ). Flexion was slightly more important than extension. Out-of-plane components were negligible. Global bending range averaged 88 degrees (SD: 16 degrees ), left and right bending being comparable. Homolateral rotation was associated to lateral bending. Its extent was approximately 40% of the bending range. Global rotation range in neutral sagittal plane position was 144 degrees (SD: 20 degrees ), without significant difference between right and left rotations. Associated motion components were small. During rotation in flexed head position, global range (134 degrees, SD: 24 degrees ) was comparable to the one in neutral flexion. But heterolateral bending, averaging 60% of the primary motion, was associated to flexed rotation. Significant reduction of all primary (but not conjunct) motions with age were obtained. Sex had no influence on cervical motion range. Our results agreed with previous observations, validating the methodology used. They thus constitute reference data of cervical out-of-plane motion for clinical applications.
Surgical and Radiologic Anatomy, 1999
Computer Methods in Biomechanics and Biomedical Engineering, 2005
Visscher (2001) demonstrated a larger incidence of neck pain in subjects suffering from temporo-m... more Visscher (2001) demonstrated a larger incidence of neck pain in subjects suffering from temporo-mandibular dysfunction than in a general population. The question of the functional relationships between neck and jaw is thus interesting to assess. Coupling between head and jaw motions has been shown (Eriksson 2000, Zafar 2000). These studies considered head motions during maximal jaw depression. The aim of this study was to quantify cervical spine motion during maximal and sub-maximal mandible depression in healthy volunteers. 2. Materials and methods
Computer Methods in Biomechanics and Biomedical Engineering, 2005
Revue médicale de Bruxelles, 1980
Acta orthopaedica Belgica
Morphologie, 2018
Déclaration de liens d'intérêts Les auteurs déclarent ne pas avoir de liens d'intérêts.
The Journal of the American Association of Gynecologic Laparoscopists, 1999
Morphologie, 2015
La reconstruction du ligament croise anterieur est frequemment realisee par la plastie aux tendon... more La reconstruction du ligament croise anterieur est frequemment realisee par la plastie aux tendons des muscles droit interne (DI) et demi-tendineux (DT). Malgre l’ablation de ces deux tendons les consequences sur la force sont limitees. La jonction myo-tendineuse est generalement consideree comme le site unique de la transmission de force. Neanmoins, une transmission parallele par la voie faciale epimusculaire a deja ete observee precedemment. L’objectif de cette etude in vitro etait de quantifier l’influence des sections des tendons et des structures faciales pour tenter d’expliquer les observations postoperatoires observees. Neuf specimens frais ont ete utilises. Analyse des excursions et des bras de leviers des muscles flechisseurs du genou lors des differentes etapes du DI-DT. Aucune difference significative n’a ete demontree apres la tenotomie et le prelevement du DI (p ≥ 0,05). Les premieres diminutions significatives (p En conclusion, les structures faciales du DI et du DT sont essentielles a la transmission de force vers l’articulation du genou.
Repeatability is the degree of agreement between measurements conducted by the same observer. Rep... more Repeatability is the degree of agreement between measurements conducted by the same observer. Repeatability is one of the major issues when developing new devices especially in clinical settings where patient follow-up request robust measurement methodologies. The Kinect sensor was used as a Markerless Camera System (MLS). Repeatability of measurement was compared with Marker Based System (MBS), a system commonly used in clinics. Forty healthy adults take part in this study. A set of markers were placed on the subject for MBS. To assess Intra-Session repeatability five trials were recorded during one session. The same protocol was repeated one week after to assess inter-session repeatability. The same operator performed all measurements. Segments’ lengths were computed: arm, forearm, hand, thigh, shank, foot and total height. Intra-Class Correlations (ICC) were computed to assess Intra and Inter repeatability for both devices. For both devices, all ICC values for inter-session repea...
Games for Health, 2013
The Kinect™ sensors can be used as cost effective and easy to use Markerless Motion Capture devic... more The Kinect™ sensors can be used as cost effective and easy to use Markerless Motion Capture devices. Therefore a wide range of new potential applications are possible. Unfortunately, right now, the stick model skeleton provided by the Kinect™ is only composed of 20 points located approximately at the joint level of the subject which movements are being captured by the camera. This relatively limited amount of key points is limiting the use of such devices to relatively crude motion assessment. The field of motion analysis however is requesting more key points in order to represent motion according to clinical conventions based on so-called anatomical planes. To extend the possibility of the Kinect™ supplementary data must be added to the available standard skeleton. This paper presents a new Model-Based Approach (MBA) that has been specially developed for Kinect™ input based on previous validated anatomical and biomechanical studies performed by the authors. This approach allows real 3D motion analysis of complex movements respecting conventions expected in biomechanics and clinical motion analysis. B. Schouten et al. (eds.
Biological Effects and Dosimetry of Static and ELF Electromagnetic Fields, 1985
During the last two decades, the use of ELF magnetic and electric fields to stimulate bone growth... more During the last two decades, the use of ELF magnetic and electric fields to stimulate bone growth and repair knew an increasing interest and its approach evolves from empirical to experimental methods.
Anatomical Record, 1994
The observation of thirty dissections of intrinsic muscles of the thumb provides some information... more The observation of thirty dissections of intrinsic muscles of the thumb provides some information differing from earlier anatomical studies. The abductor pollicis brevis and the opponens pollicis have been divided into muscles having six or two fascicles (or bellies), respectively. The adductor pollicis muscle has been separated into nine fascicles. Many variations were observed absence of fascicles, presence of atrophied or supplementary fascicles, or fascicles with varying insertions sites. Neither head of the flexor pollicis brevis muscle seemed to have any fascicles. The distal insertion of its superficial head observed in this work is not in accordance with the usual description found in the literature. A new classification of the thenar muscles is presented based on the present observations. Many variations were observed some fascicles were absent, others were supplementary or atrophied, and some had variable insertions. The importance and the individual variations of the fascicles are discussed.
Magma: Magnetic Resonance Materials in Physics, Biology, and Medicine, 1997
Classical dissection may give unsatisfactory results because of the presence of artifacts due to ... more Classical dissection may give unsatisfactory results because of the presence of artifacts due to both the embalming process and displacement of the anatomical structures. This spatial disturbance could explain the divergent descriptions found in the literature about the presence, or the absence, of an insertion of the extensor digitorum muscle (ED) at the base of the first phalanx (P1). Preliminary experiments by Van Sint Jan et al. (1996) found the same contradiction: dissections did not show a real tendon attachment, whereas a functional experiment seemed to show that "something" should exist between ED and P1 to explain the results. This paper presents the results of an in vitro MRI study of this anatomical area. A 7-T NMR microscope was used to collect accurate, noninvasive data. Subsequently, surface rendering was performed to visualize the structures in a threedimensional manner. The results of this MRI study, together with functional data obtained in an earlier study, showed that no real insertion of ED on P1 exists. However, some collagenic fibers were occasionally observed running from the ventral aspect of ED to both P1 and the metacarpophalangeal joint capsule. Those few collagenic fibers would play a secondary role in the extension of P1.
Journal of Biomechanics, 2011
Quadric surface fitting of joint surface areas is often performed to allow further processing of ... more Quadric surface fitting of joint surface areas is often performed to allow further processing of joint component size, location and orientation (pose), or even to determine soft tissue wrapping by collision detection and muscle moment arm evaluation. This study aimed to determine, for the femoral bone, if the position of its morphological joint centers and the shape morphology could be approximated using regression methods with satisfactory accuracy from a limited amount of palpable anatomical landmarks found on the femoral bone surface. The main aim of this paper is the description of the pipeline allowing on one hand the data collection and database storage of femoral bone characteristics, and on the other hand the determination of regression relationships from the available database. The femoral bone components analyzed in this study included the diaphysis, all joint surfaces (shape, location and orientation of the head, condyles and femoro-patellar surface) and their respective spatial relationships (e.g., cervico-diaphyseal angle, cervico-bicondylar angle, intercondylar angle, etc.). A total of 36 morphological characteristics are presented and can be estimated by regression method in in-vivo applications from the spatial location of 3 anatomical landmarks (lateral epicondyle, medial epicondyle and greater trochanter) located on the individual under investigation. The method does not require any a-priori knowledge on the functional aspect of the joint. In-vivo and in-vitro validations have been performed using data collected from medical imaging by virtual palpation and data collected directly on a volunteer using manual palpation through soft tissue. The prediction accuracy for most of the 36 femoral characteristics determined from virtual palpation was satisfactory, mean (SD) distance and orientation errors were 2.7(2.5) mm and 6.8(2.7)1, respectively. Manual palpation data allowed good accuracy for most femoral features, mean (SD) distance and orientation errors were 4.5(5.2) mm and 7.5(5.3)1, respectively. Only the in-vivo location estimation of the femoral head was worse (position error ¼ 23.2 mm). In conclusion, results seem to show that the method allows in-vivo femoral joint shape prediction and could be used for further development (e.g., surface collision, muscle wrapping, muscle moment arm estimation, joint surface dimensions, etc.) in gait analysis-related applications.
Computer Methods in Biomechanics and Biomedical Engineering, 2005
Computer Methods in Biomechanics and Biomedical Engineering, 2005
Illusions are numerous and varied. At all times, they intrigued mankind and drew the attention of... more Illusions are numerous and varied. At all times, they intrigued mankind and drew the attention of researchers in various fields. It is that the illusions, by the wealth of information that they provide us, constitute privileged phenomena to study for a better understanding of perception. A particular form of illusion is related to the illusions of weight. Typically, these illusions appear when the weight that we perceive of an object is different from the actual weight of this object. This question of the relation between actual weight and perceived weight of an object is a significant question to understand the mechanisms of perception of weight, but it remains at the present time still open. The exploratory study, which will be presented, relates to an illusion of weight, which, to our knowledge, was never studied in a systematic way: the illusion of “2 make less than 1”. This illusion appears when a person, requested successively to raise a small heavy cylinder (located on a large light cylinder) then the large light cylinder (and thus both cylinders) perceives the rising of the whole as being lighter than the rising of the small upper cylinder only. To explain these size-weight illusions, various explanatory parameters were proposed either only perceptive, or perceptive and motor. The movement was often studied through the analysis of speed and force of rising. Studies (Bruno 1986) seem to show us that this parameter, even if its role is not always clearly understood, holds a significant place in the realization of the illusion. Two assumptions were put forward: The presence and the intensity of the illusion of “2 make less than 1” is dependent on the visual knowledge of the illusory device. The illusion of “2 make less than 1” displays a pattern of movement specific to cylinder(s) raised. 2. Materials and methods
Clinical Biomechanics, 1999
ABSTRACT Establishment of a normal database and clinical reference of active global cervical spin... more ABSTRACT Establishment of a normal database and clinical reference of active global cervical spine motion ranges and patterns using a commercial electrogoniometer. Three-dimensional cervical motion ranges and patterns were analyzed in 250 asymptomatic volunteers. In vivo out-of-plane motion patterns of the cervical spine have not yet been reported in large populations, but could be of clinical interest. In 250 subjects (aged 14-70 yr), motion range and patterns between the first thoracic vertebra and the head were analyzed for flexion-extension, lateral bending, rotation in neutral sagittal plane position and in full flexion using the CA 6000 Spine Motion Analyzer. Average motion range in the sagittal plane was 122 degrees (SD: 18 degrees ). Flexion was slightly more important than extension. Out-of-plane components were negligible. Global bending range averaged 88 degrees (SD: 16 degrees ), left and right bending being comparable. Homolateral rotation was associated to lateral bending. Its extent was approximately 40% of the bending range. Global rotation range in neutral sagittal plane position was 144 degrees (SD: 20 degrees ), without significant difference between right and left rotations. Associated motion components were small. During rotation in flexed head position, global range (134 degrees, SD: 24 degrees ) was comparable to the one in neutral flexion. But heterolateral bending, averaging 60% of the primary motion, was associated to flexed rotation. Significant reduction of all primary (but not conjunct) motions with age were obtained. Sex had no influence on cervical motion range. Our results agreed with previous observations, validating the methodology used. They thus constitute reference data of cervical out-of-plane motion for clinical applications.
Surgical and Radiologic Anatomy, 1999
Computer Methods in Biomechanics and Biomedical Engineering, 2005
Visscher (2001) demonstrated a larger incidence of neck pain in subjects suffering from temporo-m... more Visscher (2001) demonstrated a larger incidence of neck pain in subjects suffering from temporo-mandibular dysfunction than in a general population. The question of the functional relationships between neck and jaw is thus interesting to assess. Coupling between head and jaw motions has been shown (Eriksson 2000, Zafar 2000). These studies considered head motions during maximal jaw depression. The aim of this study was to quantify cervical spine motion during maximal and sub-maximal mandible depression in healthy volunteers. 2. Materials and methods
Computer Methods in Biomechanics and Biomedical Engineering, 2005
Revue médicale de Bruxelles, 1980
Acta orthopaedica Belgica
Morphologie, 2018
Déclaration de liens d'intérêts Les auteurs déclarent ne pas avoir de liens d'intérêts.
The Journal of the American Association of Gynecologic Laparoscopists, 1999
Morphologie, 2015
La reconstruction du ligament croise anterieur est frequemment realisee par la plastie aux tendon... more La reconstruction du ligament croise anterieur est frequemment realisee par la plastie aux tendons des muscles droit interne (DI) et demi-tendineux (DT). Malgre l’ablation de ces deux tendons les consequences sur la force sont limitees. La jonction myo-tendineuse est generalement consideree comme le site unique de la transmission de force. Neanmoins, une transmission parallele par la voie faciale epimusculaire a deja ete observee precedemment. L’objectif de cette etude in vitro etait de quantifier l’influence des sections des tendons et des structures faciales pour tenter d’expliquer les observations postoperatoires observees. Neuf specimens frais ont ete utilises. Analyse des excursions et des bras de leviers des muscles flechisseurs du genou lors des differentes etapes du DI-DT. Aucune difference significative n’a ete demontree apres la tenotomie et le prelevement du DI (p ≥ 0,05). Les premieres diminutions significatives (p En conclusion, les structures faciales du DI et du DT sont essentielles a la transmission de force vers l’articulation du genou.
Repeatability is the degree of agreement between measurements conducted by the same observer. Rep... more Repeatability is the degree of agreement between measurements conducted by the same observer. Repeatability is one of the major issues when developing new devices especially in clinical settings where patient follow-up request robust measurement methodologies. The Kinect sensor was used as a Markerless Camera System (MLS). Repeatability of measurement was compared with Marker Based System (MBS), a system commonly used in clinics. Forty healthy adults take part in this study. A set of markers were placed on the subject for MBS. To assess Intra-Session repeatability five trials were recorded during one session. The same protocol was repeated one week after to assess inter-session repeatability. The same operator performed all measurements. Segments’ lengths were computed: arm, forearm, hand, thigh, shank, foot and total height. Intra-Class Correlations (ICC) were computed to assess Intra and Inter repeatability for both devices. For both devices, all ICC values for inter-session repea...
Games for Health, 2013
The Kinect™ sensors can be used as cost effective and easy to use Markerless Motion Capture devic... more The Kinect™ sensors can be used as cost effective and easy to use Markerless Motion Capture devices. Therefore a wide range of new potential applications are possible. Unfortunately, right now, the stick model skeleton provided by the Kinect™ is only composed of 20 points located approximately at the joint level of the subject which movements are being captured by the camera. This relatively limited amount of key points is limiting the use of such devices to relatively crude motion assessment. The field of motion analysis however is requesting more key points in order to represent motion according to clinical conventions based on so-called anatomical planes. To extend the possibility of the Kinect™ supplementary data must be added to the available standard skeleton. This paper presents a new Model-Based Approach (MBA) that has been specially developed for Kinect™ input based on previous validated anatomical and biomechanical studies performed by the authors. This approach allows real 3D motion analysis of complex movements respecting conventions expected in biomechanics and clinical motion analysis. B. Schouten et al. (eds.