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https://www.readbyqxmd.com/read/27904801/midfoot-and-forefoot-involvement-in-lateral-ankle-sprains-and-chronic-ankle-instability-part-1-anatomy-and-biomechanics
#1
John J Fraser, Mark A Feger, Jay Hertel
: The modern human foot is the culmination of more than five million years of evolution. The ankle-foot complex absorbs forces during loading, accommodates uneven surfaces, and acts as a lever for efficient propulsion. The ankle-foot complex has six independent functional segments that should be understood for proper assessment and treatment of foot and ankle injuries: the shank, rearfoot, midfoot, lateral forefoot, and the medial forefoot. The compliance of the individual segments of the foot is dependent on velocity, task, and active and passive coupling mechanisms within each of the foot segments...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27904728/reconstruction-of-postburn-contracture-of-the-forefoot-using-the-anterolateral-thigh-flap
#2
Sang Hyun Lee, Sung Jin An, Nu Ri Kim, Um Ji Kim, Jeung Il Kim
BACKGROUND: Severe forefoot deformities, particularly those involving the dorsum of the foot, cause inconvenience in daily activities of living including moderate pain on the dorsal aspect of the contracted foot while walking and difficulty in wearing nonsupportive shoes due to toe contractures. This paper presents clinical results of reconstruction of severe forefoot deformity using the anterolateral thigh (ALT) free flap. METHODS: Severe forefoot deformities were reconstructed using ALT flaps in 7 patients (8 cases) between March 2012 and December 2015...
December 2016: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/27891180/the-effect-of-foot-orthoses-with-forefoot-cushioning-or-metatarsal-pad-on-forefoot-peak-plantar-pressure-in-running
#3
Michaela Hähni, Anja Hirschmüller, Heiner Baur
BACKGROUND: Foot orthoses are frequently used in sports for the treatment of overuse complaints with sufficient evidence available for certain foot-related overuse pathologies like plantar fasciitis, rheumatoid arthritis and foot pain (e.g., metatarsalgia). One important aim is to reduce plantar pressure under prominent areas like metatarsal heads. For the forefoot region, mainly two common strategies exist: metatarsal pad (MP) and forefoot cushioning (FC). The aim of this study was to evaluate which of these orthosis concepts is superior in reducing plantar pressure in the forefoot during running...
2016: Journal of Foot and Ankle Research
https://www.readbyqxmd.com/read/27889978/-analysis-of-plantar-pressure-patterns-among-obese-population
#4
Eleonóra Leidecker, Péter Kellermann, Mónika Galambosné Tiszberger, Bálint Molics, Aliz Bohner-Beke, József Nyárády, János Kránicz
INTRODUCTION: Although the role of body weight on foot health and load has been widely documented in research, the effect of the extra load due to body weight on plantar pressure characteristics is not well known. AIM: The aim of this study was to evaluate the impact of obesity on plantar pressure patterns among the working-age population. METHOD: 180 participants were involved. Two groups were evaluated according to body mass index categories regarding eight regions of the plantar area, focusing on the following parameters: contact area, maximum pressure and peak pressure...
November 2016: Orvosi Hetilap
https://www.readbyqxmd.com/read/27888854/mr-imaging-of-the-midfoot-including-chopart-and-lisfranc-joint-complexes
#5
REVIEW
Monica Tafur, Zehava Sadka Rosenberg, Jenny T Bencardino
Following a brief description of the normal anatomy and biomechanics of the midfoot, this article focuses on MR imaging features of common osseous, tendon, and ligament abnormalities that affect the midfoot. Discussion of the anatomy and pathology affecting the Chopart and Lisfranc joint complexes, both of which play important roles in linking the midfoot to the hindfoot and the forefoot respectively, is also included.
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27884055/the-association-of-forefoot-varus-deformity-with-patellofemoral-cartilage-damage-in-older-adult-cadavers
#6
Rebecca S Lufler, Joshua J Stefanik, Jingbo Niu, F Kip Sawyer, Todd M Hoagland, K Douglas Gross
INTRODUCTION: Forefoot alignment may contribute to patellofemoral joint (PFJ) osteoarthritis (OA) via its influence on the closed chain kinematics of the lower limb. The purpose of this cadaveric study was to investigate the relationship between forefoot varus and ipsilateral cartilage damage in the medial and lateral PFJ. MATERIALS AND METHODS: Forefoot alignment measurements were obtained from the feet of 25 cadavers (n=50). Cartilage damage in the medial and lateral PFJ of each knee was scored using the Outerbridge scale...
November 24, 2016: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/27881742/association-of-abnormal-metatarsal-parabola-with-second-metatarsophalangeal-joint-plantar-plate-pathology
#7
Adam E Fleischer, Erin E Klein, Maheen Ahmad, Shivang Shah, Fernanda Catena, Lowell Scott Weil, Lowell Weil
BACKGROUND: Plantar plate pathology is common, yet it is unclear whether, and to what extent, the length of the second metatarsal contributes to this problem. METHODS: We conducted a retrospective case-control (1:2) study to examine radiographic risk factors for plantar plate tears. One hundred patients (age 55.7 ± 12.3 years) with plantar plate injuries and 200 healthy controls (age 56.3 ± 11.3 years) were included. Cases were defined as patients with nonacute, isolated, plantar plate pathology of the second metatarsophalangeal joint confirmed by intraoperative inspection at a single foot and ankle specialty practice from June 1, 2007, to January 31, 2014...
November 22, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27871423/the-science-behind-surgical-innovations-of-the-forefoot
#8
REVIEW
Judith F Baumhauer, Michele Marcolongo
One of the areas of foot and ankle surgery that has had particular attention over the last 5 years has been forefoot surgery. Common procedures include correction of the lessor metatarsophalangeal joints and hammertoe deformities, specifically metatarsal shortening osteotomies and proximal interphalangeal joint fusions. The goals of these surgeries are to improve patient function and allow patients to fit into shoes more comfortably in metatarsal shortening and hammertoe.
December 2016: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/27871018/is-lower-peripheral-information-weighted-differently-as-a-function-of-step-number-during-step-climbing
#9
Valentina Graci, Marco Rabuffetti, Carlo Frigo, Maurizio Ferrarin
The importance of peripheral visual information during stair climbing and how peripheral visual information is weighted as a function of step number during step climbing is unclear. Previous authors postulated that the knowledge of predictable characteristics of the steps may decrease reliance on foveal vision and transfer the online visual guidance of stair climbing to peripheral vision. Hence the aim of this study was to investigate if and how the occlusion of the lower peripheral visual field influenced stair climbing and if peripheral visual information was weighted differently between steps...
November 13, 2016: Gait & Posture
https://www.readbyqxmd.com/read/27868427/influence-of-shoe-midsole-hardness-on-plantar-pressure-distribution-in-four-basketball-related-movements
#10
Wing-Kai Lam, Wei Xuan Ng, Pui Wah Kong
This study examined how shoe midsole hardness influenced plantar pressure in basketball-related movements. Twenty male university basketball players wore customized shoes with hard and soft midsoles (60 and 50 Shore C) to perform four movements: running, maximal forward sprinting, maximal 45° cutting and lay-up. Plantar loading was recorded using an in-shoe pressure measuring system, with peak pressure (PP) and pressure time integral (PTI) extracted from 10 plantar regions. Compared with hard shoes, subjects exhibited lower PP in one or more plantar regions when wearing the soft shoes across all tested movements (Ps < 0...
November 21, 2016: Research in Sports Medicine
https://www.readbyqxmd.com/read/27866887/quality-of-early-union-after-first-metatarsophalangeal-joint-arthrodesis
#11
Florian Wanivenhaus, Norman Espinosa, Philippe M Tscholl, Fabian Krause, Stephan H Wirth
The aim of the present retrospective cohort study was to assess the quality of union and the clinical outcomes in patients who had undergone first metatarsophalangeal joint (MTPJ) fusion using a dorsal plate and plantar lag screw. From March 2011 to December 2012, the clinical and radiographic data of 39 patients (41 feet) who had undergone first MTPJ fusion using a compressive locking plate were retrospectively reviewed. All patients had undergone postoperative computed tomography at 6 weeks postoperatively to assess union...
November 17, 2016: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27863443/gait-assessment-with-solesound-instrumented-footwear-in-spinal-muscular-atrophy
#12
Jacqueline Montes, Damiano Zanotto, Sally Dunaway Young, Rachel Salazar, Darryl C De Vivo, Sunil Agrawal
BACKGROUND: Gait impairment is common in spinal muscular atrophy (SMA) and is described using clinical assessments and instrumented walkways. Continuous over-ground walking has not been studied. METHODS: Nine SMA participants completed the six-minute walk test (6MWT) and 10-meter walk/run wearing instrumented footwear (SoleSound). Data were simultaneously collected using a reference system (GAITRite(TM) ). The root mean square error (RMSE) indicated criterion validity...
November 18, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27861517/geometry-of-the-proximal-phalanx-of-hallux-and-first-metatarsal-bone-to-predict-hallux-abducto-valgus-a-radiological-study
#13
Eduardo Perez Boal, Ricardo Becerro de Bengoa Vallejo, Miguel Fuentes Rodriguez, Daniel Lopez Lopez, Marta Elena Losa Iglesias
BACKGROUND: Hallux abducto valgus (HAV) is one of the most common forefoot deformities in adulthood with a variable prevalence but has been reported as high as 48%. The study proposed that HAV development involves a skeletal parameter of the first metatarsal bone and proximal phalanx hallux (PPH) to determine if the length measurements of the metatarsal and PPH can be used to infer adult HAV. METHODS: All consecutive patients over 21 years of age with HAV by roentgenographic evaluation were included in a cross-sectional study...
2016: PloS One
https://www.readbyqxmd.com/read/27853618/the-nature-of-functional-variability-in-plantar-pressure-during-a-range-of-controlled-walking-speeds
#14
Juliet McClymont, Todd C Pataky, Robin H Crompton, Russell Savage, Karl T Bates
During walking, variability in step parameters allows the body to adapt to changes in substrate or unexpected perturbations that may occur as the feet interface with the environment. Despite a rich literature describing biomechanical variability in step parameters, there are as yet no studies that consider variability at the body-environment interface. Here, we used pedobarographic statistical parametric mapping (pSPM) and two standard measures of variability, mean square error (m.s.e.) and the coefficient of variation (CV), to assess the magnitude and spatial variability in plantar pressure across a range of controlled walking speeds...
August 2016: Royal Society Open Science
https://www.readbyqxmd.com/read/27852647/plantar-plate-repair-for-lesser-metatarsophalangeal-joint-instability
#15
Wesley W Flint, David M Macias, James R Jastifer, Jesse F Doty, Christopher B Hirose, Michael J Coughlin
BACKGROUND: Lesser metatarsophalangeal (MTP) joint instability is a common cause of forefoot pain. Advances in operative technique and instrumentation have made it possible to anatomically treat plantar plate tears through a dorsal approach. Our goal was to evaluate the subjective, functional, and radiographic outcomes of plantar plate repair (PPR) from a dorsal approach. METHODS: A prospective case series was performed evaluating the results of PPR in 97 feet with 138 plantar plate tears...
November 15, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27849290/the-prevention-of-diabetic-foot-ulceration-how-biomechanical-research-informs-clinical-practice
#16
Frank E DiLiberto, Judith F Baumhauer, Deborah A Nawoczenski
Background: Implementation of interprofessional clinical guidelines for the prevention of neuropathic diabetic foot ulceration has demonstrated positive effects regarding ulceration and amputation rates. Current foot care recommendations are primarily based on research regarding the prevention of ulcer recurrence and focused on reducing the magnitude of plantar stress (pressure overload). Yet, foot ulceration remains to be a prevalent and debilitating consequence of Diabetes Mellitus...
November 16, 2016: Brazilian Journal of Physical Therapy
https://www.readbyqxmd.com/read/27846766/comparison-of-a-self-administered-foot-evaluation-questionnaire-safe-q-between-joint-preserving-arthroplasty-and-resection-replacement-arthroplasty-in-forefoot-surgery-for-patients-with-rheumatoid-arthritis
#17
Kosuke Ebina, Makoto Hirao, Jun Hashimoto, Akihide Nampei, Kenrin Shi, Tetsuya Tomita, Kazuma Futai, Yasuo Kunugiza, Takaaki Noguchi, Hideki Yoshikawa
OBJECTIVES: To clarify the difference of patient-based outcome between joint-preserving arthroplasty and resection-replacement arthroplasty in forefoot surgery for patients with rheumatoid arthritis (RA). METHODS: A total of 63 feet of 49 RA patients who underwent forefoot surgery were asked to answer pre-operative and post-operative self-administered foot evaluation questionnaire (SAFE-Q). Patients were treated with either (1) metatarsal head resection-replacement arthroplasty (28 feet, post-operative mean age 63...
November 16, 2016: Modern Rheumatology
https://www.readbyqxmd.com/read/27846395/mid-term-functional-outcome-of-a-total-arthroplasty-of-the-first-metatarsophalangeal-joint
#18
Corina Nüesch, Annegret Mündermann, Monika Horisberger
BACKGROUND: Arthroplasty of the first metatarsophalangeal joint is an alternative treatment option for end-stage hallux rigidus to the current gold standard of arthrodesis. The aim of this study was to investigate the mid-term functional outcome of an anatomically shaped prosthesis for the first metatarsophalangeal joint using pedobarography. METHODS: Ten patients (12 affected feet; age at surgery: 62.1 (SD: 7.2) years) were investigated preoperatively and 52 (SD: 3) months postoperatively using pedobarography (EMED, novel GmbH, Munich, Germany)...
November 10, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/27837053/radiographic-analysis-of-feet-with-and-without-morton-s-neuroma
#19
Reza Naraghi, Alexandra Bremner, Linda Slack-Smith, Alan Bryant
BACKGROUND: The aim of this research was to investigate the association of various structural measurements of the forefoot with Morton's neuroma (MN). METHODS: Weightbearing anteroposterior and lateral foot radiographs of subjects attending the University of Western Australia (UWA) Podiatry Clinic and the first author's private practice were included in this study. A single assessor measured the following angles: lateral intermetatarsal angle (LIMA), intermetatarsal angle (IMA), hallux valgus angle (HVA), digital divergence between the second and third digits (DD23), digital divergence between the third and fourth digits (DD34) and relative metatarsal lengths of the first to fifth metatarsals (Met1-5), and the effect of MN size as measured by ultrasonograph on digital divergence...
November 10, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27834504/redistribution-of-mechanical-work-at-the-knee-and-ankle-joints-during-fast-running-in-minimalist-shoes
#20
Joel T Fuller, Jonathan D Buckley, Margarita D Tsiros, Nicholas A T Brown, Dominic Thewlis
CONTEXT:  Minimalist shoes have been suggested as a way to alter running biomechanics to improve running performance and reduce injuries. However, to date, researchers have only considered the effect of minimalist shoes at slow running speeds. OBJECTIVE:  To determine if runners change foot-strike pattern and alter the distribution of mechanical work at the knee and ankle joints when running at a fast speed in minimalist shoes compared with conventional running shoes...
November 11, 2016: Journal of Athletic Training
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