Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 268 for “"sagittal"”.
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Lip Profile Preferences in Varying Sagittal Mandibular Positions
… of this study was to determine the influence of sagittal mandibular position on preferred lip position in profile. Five androgynous silhouette profiles differing only in the degree of mandibular retro- or prognathism (-25º, -18º, -11º, -4º, & +3º facial contour angles) were created. Using a …
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Biomechanical models of the finger in the sagittal plane
Finger movements in the sagittal plane mainly consist of flexion and extension about the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints. The purpose of this study was to develop a biomedical finger model and to validate it by comparing finger strength and muscular forces in …
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A Retrospective Lateral Cephalometric Growth Study of Sagittal Airway Changes
… This study retrospectively examined the average sagittal dimensions in the pharyngeal airway from skeletal and dental Class I males and females from 7 to 16 years of age utilizing longitudinal data from the American Association of Orthodontists Foundation Craniofacial Growth Legacy Collection. …
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Degenerative retrolisthesis: is it a compensatory mechanism for sagittal imbalance
… the spinopelvic morphology and global sagittal balance of degenerative retrolisthesis, and to determine whether retrolisthesis is a result of spinopelvic morphology or a compensatory mechanism of global sagittal balance. Summary of Background Data: We investigated the spinopelvic …
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Corpus callosum morphology in children on mid-sagittal MR imaging
… was to assess the morphology of the CC on mid-sagittal T1- weighted magnetic resonance imaging (MRI) in a large number of children and correlate the findings with demographic and clinical criteria. Materials and methods: We reviewed all brain mid-sagittal T1-weighted MRI’s performed from July …
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Modelling the additivity of perceived exertion in symmetric, mid-sagittal lifting
… perceived exertion in repetitive, symmetric, mid-sagittal lifting. "Additivity" has been defined as the means by which a whole-body rating of perceived exertion is composed of a weighted combination of component ratings of perceived exertion. The "task additivity" hypothesis asserts that a …
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Hip function characterization in the sagittal plane with varying gait speed
… capable of providing general hip behavior in the sagittal plane. Data was collected from two healthy, young subjects who walked at slow, normal and fast gait speeds. The hip can be modeled with a torque actuator and two independent, linear torsional springs, which are activated at different times …
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The influence of load on kinematics of computer-simulated sagittal-plane lifting.
… model was developed to simulate lifting in the sagittal plane. The eight-degree-of-freedom model included the ankle, knee, hip, shoulder, elbow, neck, and two back joints. Strength limits were assigned to model joints according to position-dependent average male data obtained from the …
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A Retrospective Cephalometric Growth Study of Sagittal Airway in Skeletal Class II Patients
… The study retrospectively determined the average sagittal pharyngeal airway widths in Class II males and females between 7 to 16 years of age and changes in sagittal airway with increasing age. Additionally, this study determined whether average airway differs between gender at each age and …
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The accuracy of clinical examination of rotational and sagittal laxity of the knee
… arthrotomy. Examiners estimated millimetres of sagittal and degrees of rotational laxity of the knee at 30º and 90º of knee flexion. This examination was done in the ligamentous intact knee and again after sequential release of the anterior cruciate ligament (ACL) and anterolateral ligament …
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Hierarchical neural control of human postural balance and bipedal walking in sagittal plane
… an integrated hierarchical neural model of sagittal planar human postural balance and biped walking to 1) investigate an explicit mechanism of the cerebrocerebellar and other related neural systems, 2) explain the principles of human postural balancing and biped walking control in terms of …
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Tooth Size Ratio in Orthodontic Patients with Varied Sagittal Skeletal Patterns; A CBCT Study
<p>Objective: Maxillomandibular tooth size ratio (TSR) is an important aspect in achieving a satisfactory orthodontic outcome. The purpose of this study is to compare TSR among orthodontically treated patients with different skeletal anteroposterior (AP) patterns. Methods and Materials: The …
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The Effect of Orthodontic Treatment on Sagittal Root Position of the Maxillary Central Incisor
<p>Introduction: Sagittal root position (SRP) of maxillary incisors is an important factor in implant treatment planning. Kan et al defined four classes of SRP in an effort to aid implant placement treatment planning and these SRP classifications represent a novel approach to describing bone …
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Sagittal plane characterization of normal human ankle function across a range of walking gait speeds
… mechanical elements that can reproduce the sagittal plane dynamics of a normal ankle. The dynamics of the ankle are taken from the analysis of the slow, normal, and fast gait of 10 healthy young subjects. Thus gait-speed-dependent changes in ankle function are evaluated. Characterization of …
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The Exploration of Sagittal Spine Curvature: Validating a surface topography method & relating curvature to physical function
Abnormal or altered sagittal spine curvature is associated with poor health-related outcomes including pain, impaired physical function and mobility, decreased quality of life, and increased mortality. Therefore, it is important to both understand its consequences as well as accurately measure and …
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Une étude sur le mouvement de la colonne vertébrale durant les activités de levage dans le plan sagittal
… durant des activités de levage dans le plan sagittal, en utilisant une technique cinématographique. Une méthodologie pour simuler le déplacement de la colonne vertébrale est développée et vérifiée. L'effet de la grandeur et du poids de la boîte soulevée sur le déplacement est examiné. L'effet …
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Extreme Variation in the Sagittal Crest of Tapirus polkensis (Mammalia Perissodactyla) at the Gray Fossil Site Northeastern TN.
… little to no variation in the morphology of the sagittal crest. However, several different morphologies exist within the sample at Gray. No osteological evidence of sexual dimorphism exists for tapirs, and no correlation between crest shape and sex was observed. Several juveniles display well …
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The Influence of Heel Height on Sagittal Plane Knee Kinematics during Landing Tasks in Recreationally Active Collegiate Females
… heights added to athletic shoe wear would alter sagittal plane knee kinematics when landing from jumping maneuvers. The hypothesis was that increased heel height would increase knee flexion at initial contact (KAIC), increase the peak knee flexion angle (KAPeak), and slow the rate of knee …
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Use of a Multi-Axis Robotic Testing Platform to Investigate the Sagittal Mechanics of the Multi-Body Lumbar Spine
<p> A biomechanical study was performed to compare range of motion of the multi-body lumbar spine using three different protocols: pure moment, eccentric loading, and a new method called combined loading moment. The objectives of the study were to introduce a new protocol that overcomes the …
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