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5 résultat(s) recherche sur le mot-clé 'Three-Dimensional' 
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Partager le résultat de cette recherche Faire une suggestionThree-dimensional analysis of tarsal bone response to axial loading in patients with hallux valgus and normal feet / Kota Watanabe in Clinical Biomechanics, Vol. 42 (2017)
Titre : Three-dimensional analysis of tarsal bone response to axial loading in patients with hallux valgus and normal feet Type de document : Article Auteurs : Kota Watanabe ; Yasutoshi Ikeda ; Daisuke Suzuki Article en page(s) : pp. 65-69 Langues : Anglais (eng) Descripteurs : HE Vinci
Pied ; TomographieMots-clés : Imaging Three-Dimensional Imagerie tridimensionnelle Foot Weight-Bearing Mise en charge Tomography Hallux Valgus Résumé : Background
Patients with hallux valgus present a variety of symptoms that may be related to the type of deformity. Weightbearing affects the deformities, and the evaluation of the load response of tarsal bones has been mainly performed using two-dimensional plane radiography. The purpose of this study was to investigate and compare structural changes in the medial foot arch between patients with hallux valgus and normal controls using a computer image analysis technique and weightbearing computed tomography data.
Methods
Eleven patients with hallux valgus and eleven normal controls were included. Computed tomograms were obtained with and without simulated weightbearing using a compression device. Computed tomography data were transferred into a personal computer, and a three-dimensional bone model was created using image analysis software. The load responses of each tarsal bone in the medial foot arch were measured three-dimensionally and statistically compared between the two groups.
Findings
Displacement of each tarsal bone under two weightbearing conditions was visually observed by creating three-dimensional bone models. At the first metatarsophalangeal joint, the proximal phalanges of the hallux valgus group showed significantly different displacements in multiple directions. Moreover, opposite responses to axial loading were also observed in both translation and rotation between the two groups.
Interpretation
Weightbearing caused deterioration of the hallux valgus deformity three-dimensionally at the first metatarsophalangeal joint. Information from the computer image analysis was useful for understanding details of the pathology of foot disorders related to the deformities or instability and may contribute to the development of effective conservative and surgical treatments.Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=155687
in Clinical Biomechanics > Vol. 42 (2017) . - pp. 65-69[article]Exemplaires (1)
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Titre : Combining acetabular and femoral morphology improves our understanding of the down syndrome hip Type de document : Article Auteurs : Ziad Bakouny ; Ayman Assi ; Fares Yared Article en page(s) : p. 96-102 Langues : Anglais (eng) Descripteurs : HE Vinci
Hanche ; PostureMots-clés : Down Syndrome Syndrome de Down Imaging Three-Dimensional Imagerie tridimensionnelle Hip Résumé : Background
Hip instability is frequent in patients with Down syndrome. Recent studies have suggested that skeletal hip alterations are responsible for this instability; however, there are currently no studies simultaneously assessing femoral and acetabular anatomy in subjects with Down syndrome in the standing position. The aim was to analyze the three-dimensional anatomy of the Down syndrome hip in standing position.
Methods
Down syndrome subjects were age and sex-matched to asymptomatic controls. All subjects underwent full body biplanar X-rays with three-dimensional reconstructions of their pelvises and lower limbs. Parameter means and distributions were compared between the two groups.
Findings
Forty-one Down syndrome and 41 control subjects were recruited. Acetabular abduction (mean = 52° [SD = 9°] vs. mean = 56° [SD = 8°]) and anteversion (mean = 14° [SD = 8°] vs. mean = 17.5° [SD = 5°]) as well as posterior acetabular sector angle (mean = 91° [SD = 7°] vs. mean = 94° [SD = 7°]) were significantly lower in Down syndrome subjects compared to controls (P Interpretation
Subjects with Down syndrome were found to have a significantly altered and more heterogeneous anatomy of their proximal hips compared to controls. This heterogeneity suggests that treatment strategies of hip instability in Down syndrome should be subject-specific and should rely on the understanding of the underlying three-dimensional anatomy of each patient.Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=155918
in Clinical Biomechanics > Vol. 58 (2018) . - p. 96-102[article]Exemplaires (1)
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Titre : Effects of whole-body vibration training with quadriceps strengthening exercise on functioning and gait parameters in patients with medial compartment knee osteoarthritis: a randomised controlled preliminary study Type de document : Article Auteurs : P. Wang ; L. Yang ; H. Li Année de publication : 2016 Article en page(s) : pp. 86-92 Langues : Anglais (eng) Descripteurs : HE Vinci
Arthrose ; Exercice physique ; Force musculaire ; VibrationMots-clés : Quadriceps Muscle Muscle quadriceps fémoral Muscle Strength Exercise Osteoarthritis Imaging Three-Dimensional Imagerie tridimensionnelle Résumé : Objective
To compare the effects of whole-body vibration training (WBVT) with quadriceps strengthening exercise (QSE) with QSE alone on functioning and gait parameters in patients with medial compartment knee osteoarthritis.
Design
Randomised controlled preliminary study.
Setting
Department of Rehabilitation Medicine, West China Hospital, Chengdu, Sichuan, People's Republic of China.
Subjects
Thirty-nine patients with medial compartment knee osteoarthritis.
Interventions
Participants were assigned at random to one of two groups.
Main measures
Visual analogue scale (VAS) for pain, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), timed up and go test (TUG), 6-minute walk distance test (6MWD), and three-dimensional gait analysis during level walking at baseline, 12 weeks and 16 weeks (follow-up).
Results
Compared with baseline, significant improvements in VAS, all WOMAC scales, TUG, 6MWD and all spatiotemporal parameters were seen in both the WBVT + QSE group and the QSE alone group at 12 and 16 weeks. However, the WBVT + QSE group showed greater improvements than the QSE alone group in WOMAC scales (physical function), TUG, 6MWD and cadence at 12 weeks. No differences were found between the WBVT + QSE and QSE alone groups in VAS, WOMAC scales (pain, stiffness), kinematic and kinetic gait parameters, and other spatiotemporal parameters at 12 weeks and 16 weeks.
Conclusion
Over a 3-month period, WBVT in combination with QSE improved symptoms, physical function and spatiotemporal parameters in patients with medial compartment knee osteoarthritis, and led to greater improvement than QSE alone in WOMAC scales (physical function), TUG, 6MWD and cadence.Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/a [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=134266
in Physiotherapy > 2016/1 (2016) . - pp. 86-92[article]
Titre : Affordable clinical gait analysis: An assessment of the marker tracking accuracy of a new low-cost optical 3D motion analysis system Type de document : Article Auteurs : Bruce Carse ; Barry Meadows ; Roy Bowers Année de publication : 2013 Article en page(s) : pp. 347-351 Langues : Anglais (eng) Mots-clés : Optical motion capture Imaging Three-Dimensional Imagerie tridimensionnelle Gait Démarche Résumé : Background
3D motion analysis represents a method of collecting objective, accurate and repeatable gait data, however the high cost of equipment inhibits its widespread use in routine clinical practice.
Objective
To determine the marker tracking accuracy of a new low-cost optical 3D motion analysis system.
Design
Comparative between-system study.
Setting
Clinical motion analysis laboratories.
Methods
A rigid cluster of four reflective markers was used to compare a low-cost Optitrack 3D motion analysis system against two more expensive systems (Vicon 612 and Vicon MX). Accuracy was measured by comparing the mean vector magnitudes (between each combination of markers) for each system, and reliability was measured through the coefficients of variation (CV). Gaps in the marker trajectories, which are considered undesirable, were also counted.
Results
In terms of accuracy, the largest disagreement between mean vector magnitudes for Optitrack and Vicon MX was 2.2%. The largest disagreement between Vicon 612 and Vicon MX was 2.1%. Regarding reliability, the mean CV was lowest in Vicon MX (0.3%) and similar in the Vicon 612 (2.5%) and Optitrack (2.3%) systems. The number of trajectory gaps for the Vicon MX, Vicon 612 and Optitrack systems were; zero, six and 11 respectively.
Conclusions
The Optitrack system provides a low-cost 3D motion analysis system that can offer marker tracking accuracy and reliability which is comparable with an older and still widely used system (Vicon 612). Further development work is required before Optitrack can be used for full 3D gait analysis by physiotherapists and other health professionals.Disponible en ligne : Oui En ligne : https://login.ezproxy.vinci.be/login?url=https://www.sciencedirect.com/science/a [...] Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=134148
in Physiotherapy > 2013/4 (2013) . - pp. 347-351[article]
Titre : Design and clinical outcome of a novel 3D-printed prosthetic joint replacement for the human temporomandibular joint Type de document : Article Auteurs : David Ackland ; Dale Robinson ; Peter Vee Sin Lee Article en page(s) : p. 52-60 Langues : Anglais (eng) Descripteurs : HE Vinci
Impression tridimensionnelle ; MachoireMots-clés : Jaw Biomechanical Phenomena Phénomènes biomécaniques Printing Three-Dimensional Mandibular Prosthesis Prothèse mandibulaire Résumé : Stock prosthetic temporomandibular joint replacements come in limited sizes, and do not always encompass the joint anatomy that presents clinically. The aims of this study were twofold. (...) Disponible en ligne : Non Permalink : https://bib.vinci.be/opac_css/index.php?lvl=notice_display&id=155882
in Clinical Biomechanics > Vol. 56 (July 2018) . - p. 52-60[article]Exemplaires (1)
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