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M Rooze

Publications and source records attributed to M Rooze.

At least 19 recordsLinked to original sources
PubMed2003

The proximal attachments of the popliteus muscle: a quantitative study and clinical significance.

Controversies about the existence of accessory proximal popliteus muscle attachments can be found in the literature. The aim of this study was to verify the occurrence and width of popliteus attachments on the articular and periarticular structures of the knee joint. The relation of these attachments to tibiofemoral cartilage and meniscus degeneration was also investigated. Forty-two anatomical specimens were dissected. The incidence of accessory proximal attachments was determined and their width measured using a caliper. The fibular attachment of the popliteus was observed in 98% of cases; its mean width was 11 (SD 3) mm. At least one attachment on the lateral meniscus was found in 95% of the specimens, with a mean width of 6 (SD 2) mm. Three types of meniscal attachments of the popliteus could be identified. The severity of meniscus and tibiofemoral cartilage alterations was significantly related to the number of meniscopopliteal fascicles: more severe alterations were seen in knees with fewer meniscopopliteal fascicles. Popliteus attachments on the posterior knee joint capsule (57%), arcuate (90%) and oblique popliteal (79%) ligaments were also observed in most specimens. Popliteus muscle relationships with the posterior cruciate (5%) and meniscofemoral (33%) ligament were less common. In conclusion, accessory popliteus attachments on the fibula, lateral meniscus and arcuate popliteal ligament can be considered constant characteristics. The results of this study suggest a role of the popliteus in the protection of knee menisci and tibiofemoral cartilage.

Aged↗
PubMed2002

Computed tomography of a cyclotocephalic neonate.

Cyclotocephaly is a very rare malformative lethal condition which associates otocephaly (extreme hypoplasia of the mandibular arch with agnathia) and cyclopy with proboscis. The head of a cyclotocephalic neonate from our Museum of Anatomy and Embryology was examined using computed tomography (CT). Cutaneous and osseous three-dimensional reformations were performed. Severe bony malformations were observed. A single orbital cavity was surrounded by a cartilaginous proboscis and a median fusion of maxillae, temporal and zygomatic bones. The single orbital cavity contained both paramedial eyeballs (synophthalmia). The external auditory meati and the ear pinnae were also parasagittal. No oral cavity and mandible were observed. Despite the poor conservation state of the brain, lobar holoprosencephaly was suspected. The mesencephalon and pituitary gland were absent. This exercise could lead to optimizing ultrasonographic prenatal diagnosis.

Abnormalities, Severe Teratoid↗
PubMed2002

Registration of 6-DOFs electrogoniometry and CT medical imaging for 3D joint modeling.

The paper describes a method in which two data-collecting systems, medical imaging and electrogoniometry, are combined to allow the accurate and simultaneous modeling of both the spatial kinematics and the morphological surface of a particular joint. The joint of interest (JOI) is attached to a Plexiglas jig that includes four metallic markers defining a local reference system (R(GONIO)) for the kinematics data. Volumetric data of the JOI and the R(GONIO) markers are collected from medical imaging. The spatial location and orientation of the markers in the global reference system (R(CT)) of the medical-imaging environment are obtained by applying object-recognition and classification methods on the image dataset. Segmentation and 3D isosurfacing of the JOI are performed to produce a 3D model including two anatomical objects-the proximal and distal JOI segments. After imaging, one end of a custom-made 3D electrogoniometer is attached to the distal segment of the JOI, and the other end is placed at the R(GONIO) origin; the JOI is displaced and the spatial kinematics data is recorded by the goniometer. After recording, data registration from R(GONIO) to R(CT) occurred prior to simulation. Data analysis was performed using both joint coordinate system (JCS) and instantaneous helical axis (IHA).Finally, the 3D joint model is simulated in real time using the experimental kinematics data. The system is integrated into a computer graphics interface, allowing free manipulation of the 3D scene. The overall accuracy of the method has been validated with two other kinematics data collection methods including a 3D digitizer and interpolation of the kinematics data from discrete positions obtained from medical imaging. Validation has been performed on both superior and inferior radio-ulna joints (i.e. prono-supination motion). Maximal RMS error was 1 degrees and 1.2mm on the helical axis rotation and translation, respectively. Prono-supination of the forearm showed a total rotation of 132 degrees for 0.8mm of translation. The method reproducibility using JCS parameters was in average 1 degrees (maximal deviation=2 degrees ) for rotation, and 1mm (maximal deviation=2mm) for translation. In vitro experiments have been performed on both knee joint and ankle joint. Averaged JCS parameters for the knee were 109 degrees, 17 degrees and 4 degrees for flexion, internal rotation and abduction, respectively. Averaged maximal translation values for the knee were 12, 3 and 4mm posteriorly, medially and proximally, respectively. Averaged JCS parameters for the ankle were 43 degrees, 9 degrees and 3 degrees for plantarflexion, adduction and internal rotation, respectively. Averaged maximal translation values for the ankle were 4, 2 and 1mm anteriorly, medially and proximally, respectively.

Ankle Joint↗
PubMed2002

The nerve supply of the trapeziometacarpal joint.

Ten forearm and hand specimens from fresh cadavers were dissected and examined under magnification for articular branches to the trapeziometacarpal joint arising from the thenar and palmar cutaneous branches of the median nerve, the superficial branch of the radial nerve and the lateral cutaneous nerve of forearm. In all but one specimen the thenar branch of the median nerve sent an articular branch to the trapeziometacarpal joint. Multiple branches from the palmar cutaneous branch of the median nerve, the superficial branch of the radial nerve and the lateral cutaneous nerve of forearm were also found. All these branches need to be divided during a "complete" denervation of the trapeziometacarpal joint.

Cadaver↗
PubMed2002

Analysis of the capital femoral line orientation. A CT scan study.

An accurate knowledge of the relationship between the neck and the epiphyseal plate at the end of growth is important for biomechanical investigations of femoral neck remodelling during childhood. Statistical data about the position of the epiphyseal femoral cartilage in relation to the neck axis at the end of the growth, are rare in the literature. As the trace of the epiphysis can be observed on a CT scan view of an adult hip, cadaver femurs were investigated to study this relationship and to avoid irradiation of children. The mean anteversion angle of the epiphyseal line towards the patient's coronal plane is 2.3 degrees. The plate is retroverted in an average of 8.2 degrees in relation to the neck axis and is related to neck anteversion. The more the neck is anteverted, the more the plate is retroverted.

Femur↗
PubMed2002

Theoretical study of the decrease in the femoral neck anteversion during growth.

This theoretical analysis tries to explain the decrease of the femoral neck anteversion during growth according to well-established concepts. In the frontal plane, it was demonstrated that the capital epiphyseal plate inclination allows the plate to remain perpendicular to the resultant force applied to the hip during gait. In the transversal plane, the projection of this force varies from -24 degrees, outwards and forwards (heel strike), to 20 degrees, outwards and backwards (toe off). A mathematical formula calculates the instantaneous coordinates of the plate in this plane during gait. This kinematic study points out that the physiological value of the capital epiphyseal plate anteversion at the end of the growth is theoretically the ideal value to obtain in the transversal or horizontal plane a perpendicular relation between the orientation of this plate and the projection of the resultant force during walking.

Biomechanical Phenomena↗
PubMed2002

[In vivo measurements of shoulder movements by a goniometer with six degrees of freedom: preliminary study].

PURPOSE OF THE STUDY: The purpose of this work was to develop a goniometer with six degrees of freedom (6DOF) to achieve global measurement of the main movements of the shoulder and to examine the reproducibility of the measurements obtained. MATERIAL AND METHODS: Movement amplitudes, inter- and intra-observer reproducibility of the methodology and the device were tested in a population of ten young subjects with asymptomatic shoulders. RESULTS: Maximal amplitudes obtained for each movement were: abduction 111.8 +/- 11 degrees; flexion 127.9 +/- 12.7; external rotation 86.3 +/- 14 degrees; free elevation 129.3 +/- 9 degrees. The curves traced in the plane of rotation and rotation were plotted against elevation. Comparison between amplitudes on the right and left were not significantly different. DISCUSSION AND CONCLUSION: This preliminary study demonstrated the potential contribution of a 6DOF-goniometer for a 3D assessment of shoulder movement. Measurements made when positioning the goniometer demonstrated good reproducibility. Our data are similar to others reported in the literature. The plane of the scapula and the position in physiological internal rotation, as described in the literature, were also observed. Studying shoulder movements, particularly their association, should provide a new means of assessing function in patients with complex disease of the shoulder joint. The device should be helpful in obtaining an objective measurement of the shoulder kinetics that would be useful for patient follow-up and assessment of corporal damage.

Adult↗
PubMed2001

Histology of Kashin-Beck lesions.

There are few papers in existence describing the histopathology of Kashin-Beck disease. The few existing papers mention chondronecrosis within the epiphyseal primodium and metaphyseal cartilage. In the present study, two series of samples were available for histology: supernumerary fingers removed from young subjects and intra-articular bodies collected in more advanced cases of the disease. The prevailing characteristic of the samples is the absence of vascularisation within the proximal cartilage end plate of the phalanx associated with an alteration of the epiphyseal bone formation. These observations suggest that Kashin-Beck disease could develop from an alteration of the angiogenesis of the metaphyseal cartilage resulting in degeneration with consequent joint dysplasia, which may be associated with a decrease in growth of the diaphyseal bones.

Adolescent↗
PubMed2001

Skeletal deformities induced by the intraperitoneal administration of deoxynivalenol (vomitoxin) in mice.

The contamination of drinking water by organic acids, selenium deficiency and the ingestion of fungal mycotoxins are the three main aetiological factors in the development of Kashin-Beck disease. An avian tibial chondrodysplasia induced by mycotoxins has been reported. Deoxynivalenol (DON) is one of many mycotoxins produced by the most common contaminating species of fungi. The pattern of skeletal malformations induced by its administration intraperitoneally to pregnant mice is reported. Costo-vertebral segmentation abnormalities were the main deformities observed. The chondrodysplasia previously described was not seen.

Animals↗
PubMed2001

The prevalence of mycotoxins in Kashin-Beck disease.

Mycotoxins are naturally occurring toxic chemical compounds produced by fungi infesting agricultural crops both during their growth and storage. Such secondary metabolites, when ingested, can produce toxic syndromes in humans. As it has been suggested that mycotoxins might be involved in the development of Kashin-Beck disease (KBD), we undertook a survey of barley grains of KBD-affected families and non-affected families in that country. We found, by thin layer chromatography, a hitherto unknown metabolite of Alternaria sp. This was especially common on the barley grains of KBD-affected families.

Alternaria↗
PubMed2001

Three-dimensional kinematics of the lumbar spine during treadmill walking at different speeds.

The lumbar spine is of primary importance in gait and its development is influenced by the upright posture adopted in human locomotion. However, little is known about the kinematic behavior of the lumbar spine during walking. The aim of this study was to examine (1) lumbar spine kinematics during walking, (2) the effect of walking velocity on lumbar motion patterns and (3) the coupling characteristics of rotation and bending. In 22 volunteers aged 15-57 years, the three-dimensional displacements of T12 to the sacrum were sampled during elementary movements of the trunk and during walking on a treadmill at four walking velocities. A three-dimensional electrogoniometer (CA 6000 Spine Motion Analyzer) sampling at 100 Hz was used. We analyzed maximal primary and coupled motion ranges (ROM) and velocities in each plane. Lumbar ROM during walking did not exceed 40% of maximal active ROM. Transverse plane ROM and frontal and transverse velocities increased with walking velocity. Coupling of rotation and bending during walking was individually variable and dependent on walking velocity. Moreover, the smoothness of the bending-rotation path varied with walking velocity. A simplified envelope of lumbar coupling characteristics during walking is presented, and the existence of an individually variable walking speed that is characterized by a more harmonic lumbar contribution is hypothesized.

Adult↗
PubMed2001

[Thenar branch of the median nerve and innervation of the trapeziometacarpal joint].

INTRODUCTION: Denervation has been proposed successfully for chronic wrist pain. This procedure is not commonly performed for degenerative osteoarthritis of the trapeziometacarpal joint. According to the classic anatomical descriptions of the wrist innervation, it seems that the thenar branch of the median nerve (TBMN) is the only nerve of the wrist for which no articular branches are clearly defined. The aim of this study is to complete the few anatomical descriptions of the trapeziometacarpal joint innervation with microdissections of the TBMN. MATERIALS AND METHODS: Ten wrist and hand specimens from fresh cadavers were dissected by the same operator under magnification (3.5-12x). The TBMN was identified at its origin from the median nerve and followed in the thenar muscles. All the divisions of the TBMN were identified and followed to their terminal branches. RESULTS: The TBMN divided in at least two main branches, one each to the opponens and to the abductor pollicis brevis. In all but one specimen, the branch to the opponens pollicis muscle passed over or into its medial aspect to spread on the palmar side of the trapezium. Each dissected articular branches were histologically confirmed. DISCUSSION: Our results show a clear participation of the TBMN in the innervation of the trapeziometacarpal joint. The lack of knowledge of this anatomical feature may explain the inconstant results obtained with selective denervation of the trapeziometacarpal joint.

Cadaver↗
PubMed2000

Analysis of helical axes, pivot and envelope in active wrist circumduction.

OBJECTIVE: To study active wrist circumduction and planar moves, in terms of anatomical angles and envelope and of finite helical axes and mean pivot point. DESIGN: We measured the position of the "mean pivot point" and its mean distance to the axes as anatomical angles in an in vivo full range movement. BACKGROUND: The mean pivot point has been used in in vitro and roentgen stereophotogrammetric studies of wrist kinematics. However, the distribution of "3D centers of rotation" has never been presented in a non-invasive in vivo study. METHODS: A light 6 degrees of freedom electrogoniometer was built and employed in vivo to measure circumduction, flexion-extension and radioulnar deviation on both wrists of twenty one volunteers. RESULTS: Results were in general agreement with previously published ranges of wrist planar motion. The circumduction envelope proved to be a relevant representation of active wrist motion. The "mean pivot point" displayed a relative dispersion in localization of this point. CONCLUSION: The pivot results suggest that the wrist acts as a universal joint but with a non fixed location in the capitate head. The major axis of wrist envelope was not skew. RELEVANCE: The envelope and the precise knowledge of the helical axis pivot and its mean distance to the axes could give precious information on wrist functionality and stability after surgical or conservative treatment.

Adult↗
PubMed2000

Geometrical analysis of the femoral neck torsion.

By the geometrical analysis of three cross sections the surface along the femoral neck, the second moments of area and the major axes of symmetry are obtained. The surface passing through these axes determined in each section, from the lateral to the medial third of the neck, is one of the two anatomical surfaces of symmetry of the neck. The geometric structure defined by this surface is a helicoid. No plane, in the ordinary sense of the word, has to be defined in the femoral neck. At the trochanteric junction, the major axis is inclined about 17 degrees on the anteversion plane, twists anteriorly and becomes more horizontal to finish with a mean inclination of 60 degrees at the cephalic junction. Surprisingly, this twist and then the neck torsion are in opposite directions to that suggested by the bony markers, often taken as a reference and reported in the anatomical descriptions.

Biomechanical Phenomena↗
PubMed1999

The capsular ligaments of the wrist: morphology, morphometry and clinical applications.

Variable wrist ligament descriptions and nomenclatures have been presented, but the dimensions of these ligaments have not yet been extensively investigated. To verify the numerous concepts advanced and to provide a better understanding of individual variations in carpal biomechanics, and the numerous pathomechanical concepts reported in the literature, this study aimed to determine capsular carpal ligament anatomy, their dimensions and variations. The origin, insertion, and number of fascicles of the capsular wrist ligaments were observed in precise dissection of 66 anatomic preparations. The dimensions of several capsular wrist ligaments were measured using a calliper: the parameters analysed being length and width at three levels each, from which mean length and width and approximate mean surface (product of mean length by mean width) were determined. The anatomy of the capsular ligaments of the wrist showed, besides relatively constant structures, considerable individual variations, particularly of the ulnocarpal and dorsal ligaments. The standard deviations of ligament lengths and widths were mostly less than 20% of the average value. Some measurements, however, showed larger variations, such as those associated with the dorsal scaphotriquetral and ulnocarpal ligaments. Ligament widths generally showed larger variations and less interdependency than did ligament lengths. The capsular wrist ligaments display morphologic and morphometric variations, which could explain the biomechanical variations reported in the literature, and the diversity of classifications and treatment methods proposed for carpal instability. Further studies, however, are needed to confirm this hypothesis.

Anthropometry↗
PubMed1999

Postero-anterior radiography of the wrist: scapholunate ratios and joint projection shape analysis.

A normal database of qualitative and quantitative data, obtained from standard posteroanterior wrist radiographs has been established which might be useful in clinical practice. Variations in the parameters obtained could provide an explanation for the variable carpal kinematics and multiple concepts of carpal instability described in the literature. Selected landmarks were digitized on 80 posteroanterior wrist radiographs of asymptomatic volunteers. Besides classical parameters, measurement of carpal dimensions and angular relationships were also taken. Two new parameters, the scapholunate ratios, are described which evaluate the relative lengths of the frontal projections of the scaphoid and lunate: these ratios might prove useful in the diagnosis of carpal instability. The shapes of the frontal projections of the radiocarpal, midcarpal and STT joint spaces were also analysed. Average values for parameters already reported in the literature agreed with previous findings. Some parameters, however, displayed important individual variations, the standard deviations ranging from 1 to 3 mm for dimensions and from 3 to 13 degrees for angular measurements. The posteroanterior and anteroposterior scapholunate ratios averaged 1.41 +/- 0.21 and 0.66 +/- 0.13 respectively. The potential clinical benefit of these ratios is discussed. Different types of joint space projection shapes could be determined. With respect to the difficulty of obtaining reliable lateral wrist radiographs, compared to posteroanterior radiographs, it is suggested that the clinical significance of the proposed parameters must be evaluated.

Anthropometry↗
PubMed1999

Cranio-facial dysmorphism: experimental study in the mouse, clinical applications.

To obtain a better understanding of mandibulo-facial dysostosis and hemicraniofacial microsomia in man, the authors carried out a histologic and scanning electron microscope study of the facial malformations produced in mouse embryos by retinoic acid and methyl-triazene. The administration of 400 mg/kg 13 cis-retinoic acid (RA) to pregnant C57BL mice on day 9 of gestation produced anomalies of the cephalic extremity in the embryos resembling human mandibulo-facial dysostosis. The 64 embryos collected presented hypoplasia of the branchial arches or the snout in 79% of cases, auricular anomalies in 47% and ophthalmic anomalies in 12.5%. Fourteen NMRI mice on day 10.5 of gestation were treated with 1.5 mg (0.5 mg/kg) methyl-triazene (Methyl). The 126 embryos collected had developed a very high percentage of micromandibles and anomalies of both embryonic ears (94.6% to 100%). Finally, although the facial anomalies produced by retinoic acid resemble the human mandibulo-facial dysostosis syndrome, no correlation was found between hemicraniofacial microsomia and the administration of methyl-triazene.

Abnormalities, Drug-Induced↗