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Multisegment foot model

Jasper Stevens, Kenneth Meijer, Wouter Bijnens, Mathijs C H W Fuchs, Lodewijk W van Rhijn, Joris P S Hermus, Sander van Hoeve, Martijn Poeze, Adhiambo M Witlox
BACKGROUND: Arthrodesis of the first metatarsophalangeal (MTP1) joint is an intervention often used in patients with severe MTP1 joint osteoarthritis and relieves pain in approximately 80% of these patients. The kinematic effects and compensatory mechanism of the foot for restoring a more normal gait pattern after this intervention are unknown. The aim of this study was to clarify this compensatory mechanism, in which it was hypothesized that the hindfoot and forefoot would be responsible for compensation after an arthrodesis of the MTP1 joint...
October 21, 2016: Foot & Ankle International
Dustin A Bruening, Timothy E Cooney, Matthew S Ray, Gregory A Daut, Kevin M Cooney, Stephanie M Galey
BACKGROUND: Foot and ankle movement alterations following ankle arthrodesis are still not well understood, particularly those that might contribute to the documented increase in adjacent joint arthritis. Generalized tarsal hypermobility has long been postulated, but not confirmed in gait or functional movements. The purpose of this study was to more thoroughly evaluate compensation mechanisms used by arthrodesis patients during level and uphill gait through a variety of measurement modalities and a detailed breakdown of gait phases...
June 27, 2016: Foot & Ankle International
Cynthia J Wright, Brent L Arnold, Scott E Ross
CONTEXT: It has been proposed that altered dynamic-control strategies during functional activity such as jump landings may partially explain recurrent instability in individuals with functional ankle instability (FAI). OBJECTIVE: To capture jump-landing time to stabilization (TTS) and ankle motion using a multisegment foot model among FAI, coper, and healthy control individuals. DESIGN: Cross-sectional study. SETTING: Laboratory...
January 2016: Journal of Athletic Training
Clare E Milner, Richard A Brindle
There has been increased interest recently in measuring kinematics within the foot during gait. While several multisegment foot models have appeared in the literature, the Oxford foot model has been used frequently for both walking and running. Several studies have reported the reliability for the Oxford foot model, but most studies to date have reported reliability for barefoot walking. The purpose of this study was to determine between-day (intra-rater) and within-session (inter-trial) reliability of the modified Oxford foot model during shod walking and running and calculate minimum detectable difference for common variables of interest...
January 2016: Gait & Posture
Claude Pothrat, Guillaume Authier, Elke Viehweger, Eric Berton, Guillaume Rao
BACKGROUND: Biomechanical models representing the foot as a single rigid segment are commonly used in clinical or sport evaluations. However, neglecting internal foot movements could lead to significant inaccuracies on ankle joint kinematics. The present study proposed an assessment of 3D ankle kinematic outputs using two distinct biomechanical models and their application in the clinical flat foot case. METHODS: Results of the Plug in Gait (one segment foot model) and the Oxford Foot Model (multisegment foot model) were compared for normal children (9 participants) and flat feet children (9 participants)...
June 2015: Clinical Biomechanics
Luke A Kelly, Glen Lichtwark, Andrew G Cresswell
The longitudinal arch (LA) of the human foot compresses and recoils in response to being cyclically loaded. This has typically been considered a passive process, however, it has recently been shown that the plantar intrinsic foot muscles have the capacity to actively assist in controlling LA motion. Here we tested the hypothesis that intrinsic foot muscles, abductor hallucis (AH), flexor digitorum brevis (FDB) and quadratus plantae (QP), actively lengthen and shorten during the stance phase of gait in response to loading of the foot...
January 6, 2015: Journal of the Royal Society, Interface
Thales R Souza, Haroldo L Fonseca, Ana Carolina A Vaz, Juliana S Antero, Cristiano S Marinho, Sérgio T Fonseca
BACKGROUND: Detailed description of foot pronation-supination requires multisegment evaluation of the kinematics of the foot-ankle complex. There are noninvasive methods with independent (single) tracking markers attached directly to the skin. However, these methods are inconsistent with the usual rigid segments assumption. In contrast, using clustered markers is compatible with this assumption and is necessary for analyses that need tracking markers to be distant from the foot (eg, shod walking)...
November 2014: Journal of the American Podiatric Medical Association
Dong Yeon Lee, Sang Gyo Seo, Eo Jin Kim, Sung Ju Kim, Kyoung Min Lee, Daniel C Farber, Chin Youb Chung, In Ho Choi
BACKGROUND: Radiographic examination is a widely used evaluation method in the orthopedic clinic. However, conventional radiography alone does not reflect the dynamic changes between foot and ankle segments during gait. Multiple 3-dimensional multisegment foot models (3D MFMs) have been introduced to evaluate intersegmental motion of the foot. In this study, we evaluated the correlation between static radiographic indices and intersegmental foot motion indices. METHODS: One hundred twenty-five females were tested...
January 2015: Foot & Ankle International
Kevin Deschamps, Philip Roosen, Ivan Birch, Bart Dingenen, Herman Bruyninckx, Kaat Desloovere, Erwin Aertbelien, Filip Staes
BACKGROUND: The determination of anatomical reference frames in the rearfoot during three-dimensional multisegment foot modeling has been hindered by a variety of factors. One of these factors is related to the difficulty in palpating, or the absence of, anatomical landmarks. A novel device (the Calcaneal Marker Device) aimed at standardizing marker placement at the calcaneus was, therefore, developed and evaluated for its reliability. METHODS: Throughout a random repeated-measures design, the repeatability of calcaneal marker placement was evaluated for two techniques: manual placement and placement using the Calcaneal Marker Device...
January 2014: Journal of the American Podiatric Medical Association
Alison C Novak, D Joshua Mayich, Stephen D Perry, Timothy R Daniels, James W Brodsky
No abstract text is available yet for this article.
February 2014: Foot & Ankle International
K Deschamps, G A Matricali, P Roosen, F Nobels, J Tits, K Desloovere, H Bruyninckx, M Flour, P-A Deleu, W Verhoeven, F Staes
BACKGROUND: Reduction in foot mobility has been identified as a key factor of altered foot biomechanics in individuals with diabetes mellitus. This study aimed at comparing in vivo segmental foot kinematics and coupling in patients with diabetes with and without neuropathy to control adults. METHODS: Foot mobility of 13 diabetic patients with neuropathy, 13 diabetic patients without neuropathy and 13 non-diabetic persons was measured using an integrated measurement set-up including a plantar pressure platform and 3D motion analysis system...
August 2013: Clinical Biomechanics
James W Brodsky, Scott C Coleman, Sheryl Smith, Fabian E Polo, Shay Tenenbaum
BACKGROUND: One of the rationales for total ankle arthroplasty (TAA) is that it may retard the changes of hypermobility and accelerated arthritis in the hindfoot after ankle arthrodesis. Until recently, it has not been possible to quantify or even objectively demonstrate biomechanical findings to substantiate the theory that postsurgical biomechanical changes in the ankle produce changes in the kinematics of the hindfoot. Standard gait analysis has treated the foot as a single biomechanical unit...
November 2013: Foot & Ankle International
Roel De Ridder, Tine Willems, Jos Vanrenterghem, Mark Robinson, Todd Pataky, Philip Roosen
PURPOSE: Many patients who sustain an acute lateral ankle sprain develop chronic ankle instability (CAI). Altered ankle kinematics have been reported to play a role in the underlying mechanisms of CAI. In previous studies, however, the foot was modeled as one rigid segment, ignoring the complexity of the ankle and foot anatomy and kinematics. The purpose of this study was to evaluate stance phase kinematics of subjects with CAI, copers, and controls during walking and running using both a rigid and a multisegmented foot model...
November 2013: Medicine and Science in Sports and Exercise
Douglas W Powell, D S Blaise Williams, Robert J Butler
BACKGROUND: Malalignment and dysfunction of the foot have been associated with an increased propensity for overuse and traumatic injury in athletes. Several multisegment foot models have been developed to investigate motions in the foot. However, it remains unknown whether the kinematics measured by different multisegment foot models are equivocal. The purpose of the present study is to examine the efficacy of two multisegment foot models in tracking aberrant foot function. METHODS: Ten high-arched and ten low-arched female athletes walked and ran while ground reaction forces and three-dimensional kinematics were tracked using the Leardini and Oxford multisegment foot models...
March 2013: Journal of the American Podiatric Medical Association
Dominique Legault-Moore, Victoria L Chester, Gwyneth de Vries
BACKGROUND: Currently, age-related changes in foot mechanics are poorly understood. A greater understanding of the natural changes in foot motion is needed to improve our understanding of pathological foot conditions. METHODS: The purpose of this study was to compare multisegment foot kinematic data during gait in younger and older individuals. Eleven (N = 11) adult male participants between the ages of 18 - 30 years (younger group; mean ± SD: 24.6 ± 3.0 years) and eleven (N = 11) adults aged 55 years or older (older group; mean ± SD: 65...
August 2012: Journal of Clinical Medicine Research
Prabhav Saraswat, Bruce A MacWilliams, Roy B Davis, Jacques L D'Astous
Several multisegment foot models have been proposed and some have been used to study foot pathologies. These models have been tested and validated on typically developed populations; however application of such models to feet with significant deformities presents an additional set of challenges. For the first time, in this study, a multisegment foot model is tested for repeatability in a population of children with symptomatic abnormal feet. The results from this population are compared to the same metrics collected from an age matched (8-14 years) typically developing population...
January 2013: Gait & Posture
Pazit Levinger, Hylton B Menz, Adam D Morrow, John R Bartlett, Julian A Feller, Mohammad R Fotoohabadi, Neil R Bergman
BACKGROUND: Individuals with knee osteoarthritis (OA) have flatter/more pronated feet than those without OA, but it is unclear whether altered foot posture and function are a cause or consequence of knee OA. The purpose of this study was to examine whether changes in foot posture and function occur after realignment of the knee following total knee replacement (TKR). MATERIALS AND METHODS: Nineteen patients with predominantly medial compartment knee OA were tested prior to and 12 months after TKR...
December 2012: Knee
Ivan Birch, Kevin Deschamps
BACKGROUND: Quantifying subtalar joint kinematics during locomotion is a major challenge but is critical to understanding foot function. The difficulty of modeling the subtalar joint is demonstrated by the plethora of three-dimensional multisegment foot models lacking specific consideration of the subtalar joint. Scientific attempts to develop an adequate method of quantifying subtalar joint kinematics should include investigation of the movement of skin-mounted markers. This study reports on a single-subject investigation into this topic...
November 2011: Journal of the American Podiatric Medical Association
Michiel Oosterwaal, Scott Telfer, Søren Tørholm, Sylvain Carbes, Lodewijk W van Rhijn, Ross Macduff, Kenneth Meijer, Jim Woodburn
BACKGROUND: Currently, custom foot and ankle orthosis prescription and design tend to be based on traditional techniques, which can result in devices which vary greatly between clinicians and repeat prescription. The use of computational models of the foot may give further insight in the biomechanical effects of these devices and allow a more standardised approach to be taken to their design, however due to the complexity of the foot the models must be highly detailed and dynamic. METHODS/DESIGN: Functional and anatomical datasets will be collected in a multicentre study from 10 healthy participants and 15 patients requiring orthotic devices...
2011: BMC Musculoskeletal Disorders
Stephen C Cobb, Laurie L Tis, Jeffrey T Johnson, Yong Tai Wang, Mark D Geil
CONTEXT: Foot-orthosis (FO) intervention to prevent and treat numerous lower extremity injuries is widely accepted clinically. However, the results of quantitative gait analyses have been equivocal. The foot models used, participants receiving intervention, and orthoses used might contribute to the variability. OBJECTIVE: To investigate the effect of a custom-molded FO intervention on multisegment medial foot kinematics during walking in participants with low-mobile foot posture...
July 2011: Journal of Athletic Training
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