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https://www.readbyqxmd.com/read/29144991/finite-element-simulation-on-posterior-tibial-tendinopathy-load-transfer-alteration-and-implications-to-the-onset-of-pes-planus
#1
Duo Wai-Chi Wong, Yan Wang, Aaron Kam-Lun Leung, Ming Yang, Ming Zhang
BACKGROUND: Posterior tibial tendinopathy is a challenging foot condition resulting in pes planus, which is difficult to diagnose in the early stage. Prior to the deformity, abnormal internal load transfer and soft tissue attenuation are anticipated. The objective of this study was to investigate the internal load transfer and strain of the ligaments with posterior tibial tendinopathy, and the implications to pes planus and other deformities. METHODS: A three-dimensional finite element model of the foot and ankle was reconstructed from magnetic resonance images of a 28-year-old normal female...
November 3, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/29144772/subchondral-bone-degradation-after-microfracture-for-osteochondral-lesions-of-the-talus-an-mri-analysis
#2
Yoshiharu Shimozono, Max Coale, Youichi Yasui, Amanda O'Halloran, Timothy W Deyer, John G Kennedy
BACKGROUND: Microfracture is the most common cartilage-reparative procedure for the treatment of osteochondral lesions of the talus (OLTs). Damage to the subchondral bone (SCB) during microfracture may irreversibly change the joint-loading support of the ankle, leading to reparative fibrocartilage degradation over time. PURPOSE: To investigate the morphological change in the SCB after microfracture for OLT by developing a novel magnetic resonance imaging (MRI) scoring system specifically for evaluating the SCB...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29142581/an-unexpected-reason-for-isolated-foot-drop-acute-stroke
#3
Eylem Kuday Kaykisiz, Erden Erol Unluer
The differential diagnosis of acute weakness (AW) in emergency departments (ED) is broad and includes both neurological and medical reasons. We describe an 81-year-old female patient with cortical infarct presenting with sudden onset isolated foot drop, which to the best of our knowledge, was the third case in English literature. An 81-year-old female was admitted to our ED with a 12-hour history of left-sided foot drop. Her motor strength was normal throughout the upper and lower extremities, except for weakness in the left ankle and toe dorsiflexors...
September 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29141520/a-simple-suture-guiding-device-for-minimally-invasive-achilles-tendon-repair
#4
Sinan Obut, Alper Gultekin, Meric Unal, Ulaş Serarslan, Ümit Tuhanioğlu
BACKGROUND: Our hypothesis is to utilize a simple suture-guiding device for minimally invasive repair of Achilles tendon without any extra cost with a minimal risk of rerupture. The purpose of this study is to investigate the results of our minimally invasive technique for Achilles tendon repair using a simple ovarian clamp for suture guiding. MATERIALS AND METHODS: Twenty patients with acute Achilles tendon rupture were treated with minimally invasive repair by an expert orthopaedic surgeon...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29141466/retrospective-cohort-analysis-of-pedal-procedures-in-the-thrombocytopenic-patient
#5
Brian M Schmidt, Crystal M Holmes
Thrombocytopenia is an important medical condition to understand prior to performing procedures in the foot and ankle. We have set forth to highlight factors a physician should take into consideration before performing procedures in the thrombocytopenic patient. A retrospective cohort analysis at a large academic institution was undertaken utilizing a cohort discovery tool to discover incidence and management strategies for patients with foot-related conditions that require in-office procedures. We demonstrate that a full history and physical are important to guide treatment along with complete blood count testing prior to intervention...
November 1, 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/29140194/validity-of-a-smartphone-application-for-measuring-ankle-plantar-flexion
#6
Robert W Cox, Rodrigo E Martinez, Russell T Baker, Lindsay W Larkins
CONTEXT: Range of motion (ROM) is a component of a physical exam used in the diagnostic and rehabilitative process. Following ankle injury and/or during research, it is common to measure plantarflexion with a universal goniometer. The ease and availability of digital inclinometers created as applications for smartphones, has led to an increase in using this method of ROM assessment. Smartphone applications have been validated as alternatives to inclinometer measurements in the knee; however, this application has not been validated for plantarflexion in the ankle...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29140159/athletes-rated-as-poor-single-leg-squat-performers-display-measureable-differences-in-single-leg-squat-biomechanics-compared-to-good-performers
#7
Lachlan E Garrick, Bryce C Alexander, Anthony G Schache, Marcus G Pandy, Kay M Crossley, Natalie J Collins
CONTEXT: It is important to validate single-leg squat visual rating criteria used in clinical practice and research. Foot orthoses may improve single-leg squat performance in those who demonstrate biomechanics associated with increased risk of lower-limb injury. OBJECTIVE: Validate visual rating criteria proposed by Crossley et al, by determining whether athletes rated as poor single-leg squat performers display different single-leg squat biomechanics than good performers; and evaluate immediate effects of foot orthoses on single-leg squat biomechanics in poor performers...
November 15, 2017: Journal of Sport Rehabilitation
https://www.readbyqxmd.com/read/29139570/distribution-of-segmental-foot-kinematics-in-patients-with-degenerative-joint-disease-of-the-ankle
#8
Karl Canseco, Karen M Kruger, Jessica M Fritz, Katherine A Konop, Sergey Tarima, Richard M Marks, Gerald F Harris
Degenerative joint disease (DJD) of the ankle is a debilitating chronic disease associated with severe pain and dysfunction resulting in antalgic gait alteration. Little information is available about segmental foot and ankle motion distribution during gait in ankle osteoarthritis. The aim of the current study was to dynamically characterize segmental foot and ankle kinematics of patients with severe ankle arthrosis requiring total ankle replacement. This was a prospective study involving 36 (19 M, 17 F) adult patients with a clinical diagnosis of ankle arthrosis ("DJD" group) and 36 (23 M, 13 F) healthy subjects ("Control" group)...
November 15, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29139051/subject-specific-finite-element-modelling-of-the-human-foot-complex-during-walking-sensitivity-analysis-of-material-properties-boundary-and-loading-conditions
#9
Mohammad Akrami, Zhihui Qian, Zhemin Zou, David Howard, Chris J Nester, Lei Ren
The objective of this study was to develop and validate a subject-specific framework for modelling the human foot. This was achieved by integrating medical image-based finite element modelling, individualised multi-body musculoskeletal modelling and 3D gait measurements. A 3D ankle-foot finite element model comprising all major foot structures was constructed based on MRI of one individual. A multi-body musculoskeletal model and 3D gait measurements for the same subject were used to define loading and boundary conditions...
November 14, 2017: Biomechanics and Modeling in Mechanobiology
https://www.readbyqxmd.com/read/29138920/concurrent-arthroscopic-osteochondral-lesion-treatment-and-lateral-ankle-ligament-repair-has-no-substantial-effect-on-the-outcome-of-chronic-lateral-ankle-instability
#10
Dong Jiang, Yin-Fang Ao, Chen Jiao, Xing Xie, Lin-Xin Chen, Qin-Wei Guo, Yue-Lin Hu
PURPOSE: The purpose of the study was to evaluate the effect of concurrent arthroscopic osteochondral lesion (OCL) treatment and lateral ankle ligament repair on the outcome of chronic lateral ankle instability. It was hypothesized that the arthroscopic OCL treatment might have some negative effect on the outcome of chronic lateral ankle instability (CLAI) by compromising the rehabilitation program. METHODS: Ankle arthroscopy and anatomic lateral ankle ligament repair with suture anchors were performed for 70 patients with CLAI between 2010 and 2012...
November 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29138208/validation-of-the-american-orthopaedic-foot-and-ankle-society-ankle-hindfoot-scale-dutch-language-version-in-patients-with-hindfoot-fractures
#11
A Siebe De Boer, Duncan E Meuffels, Cornelis H Van der Vlies, P Ted Den Hoed, Wim E Tuinebreijer, Michael H J Verhofstad, Esther M M Van Lieshout
OBJECTIVES: The American Orthopaedic Foot and Ankle Society (AOFAS) Ankle-Hindfoot Scale is among the most used questionnaires for measuring functional recovery after a hindfoot injury. Recently, this instrument was translated and culturally adapted into a Dutch version. In this study, the measurement properties of the Dutch language version (DLV) were investigated in patients with a unilateral hindfoot fracture. DESIGN: Multicentre, prospective observational study...
November 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/29138198/norwegian-trends-in-numbers-of-lower-extremity-revascularisations-and-amputations-including-regional-trends-in-endovascular-treatments-for-peripheral-arterial-disease-a-retrospective-cross-sectional-registry-study-from-2001-to-2014
#12
Kjersti Wendt, Ronny Kristiansen, Kirsten Krohg-Sørensen, Fredrik Alexander Gregersen, Erik Fosse
OBJECTIVE: The numbers of lower extremity revascularisations and amputations are insufficiently reported in Norway. To support future policy decisions regarding the provision of vascular treatment, knowledge of such trends is important. METHODS: This retrospective cross-sectional study from 2001 to 2014 used data from the Norwegian Patient Registry. The revascularisation treatments were categorised in multilevel, aortoiliac, femoral to popliteal and popliteal to foot levels and sorted as open, endovascular and hybrid...
November 14, 2017: BMJ Open
https://www.readbyqxmd.com/read/29137725/a-gait-retraining-system-using-augmented-reality-to-modify-footprint-parameters-effects-on-lower-limb-sagittal-plane-kinematics
#13
Sami Bennour, Baptiste Ulrich, Thomas Legrand, Brigitte M Jolles, Julien Favre
Improving lower-limb flexion/extension angles during walking is important for the treatment of numerous pathologies. Currently, these gait retraining procedures are mostly qualitative, often based on visual assessment and oral instructions. This study aimed to propose an alternative method combining motion capture and display of target footprints on the floor. The second objectives were to determine the error in footprint modifications and the effects of footprint modifications on lower-limb flexion/extension angles...
November 11, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29137617/surgical-treatment-for-diffused-type-giant-cell-tumor-pigmented-villonodular-synovitis-about-the-ankle-joint
#14
Xingchen Li, Yang Xu, Yuan Zhu, Xiangyang Xu
BACKGROUND: Diffused-type giant cell tumor(Dt-GCT) is a rare, aggressive disorder of the joint synovium, bursa and tendon sheaths. Osseous erosions and subchondral cysts may develop as the result of synovium infiltration in Dt-GCT. We present a retrospective study of a series of patients who are diagnosed with Dt-GCT about the ankle joint, there clinical outcome is evaluated in this study. MATERIAL AND METHOD: Fifteen patients with radiologically and histologically confirmed Dt-GCT about the ankle joint were identified in our foot and ankle department...
November 14, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29137564/muscle-atrophy-and-recovery-of-individual-thigh-muscles-as-measured-by-magnetic-resonance-imaging-scan-during-treatment-with-cast-for-ankle-or-foot-fracture
#15
Koun Yamauchi, Akito Yoshiko, Shigetoshi Suzuki, Chisato Kato, Hiroshi Akima, Takayuki Kato, Koji Ishida
PURPOSE: We aimed to longitudinally investigate individual thigh muscle changes using magnetic resonance imaging (MRI) during treatment with cast of ankle or foot fracture. Moreover, we aimed to demonstrate whether measurements of muscle cross-sectional area (CSA) are sensitive to muscle changes, contributing to simpler methods in clinical application . METHODS: Ten patients undergoing treatment with cast of acute ankle or foot fractures were studied. Axial MRI (1...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29136254/completion-of-multiple-fellowships-by-orthopedic-surgeons-analysis-of-the-american-board-of-orthopaedic-surgery-certification-database
#16
J Mason DePasse, Alan H Daniels, Wesley Durand, Brandon Kingrey, John Prodromo, Mary K Mulcahey
Orthopedic surgeons have become increasingly subspecialized, and recent studies have shown that American Board of Orthopaedic Surgery (ABOS) Step II applicants are performing a higher percentage of their cases within their chosen subspecialties. However, these studies focused exclusively on surgeons who have completed a single fellowship; little data exist on those who pursue a second fellowship. All applicants to the ABOS Part II examination from 2004 to 2016 were classified by their self-reported fellowship training history using the ABOS Part II examination database...
November 11, 2017: Orthopedics
https://www.readbyqxmd.com/read/29135783/beyond-the-bottom-of-the-foot-topographic-organization-of-the-foot-dorsum-in-walking
#17
Taryn Klarner, Gregory E P Pearcey, Yao Sun, Trevor S Barss, Chelsea Kaupp, Bridget Munro, Nick Frank, E Paul Zehr
INTRODUCTION: Sensory feedback from the foot dorsum during walking has only been studied globally by whole nerve stimulation. Stimulating the main nerve innervating the dorsal surface produces a functional stumble corrective response that is phase-dependently modulated. We speculated that effects evoked by activation of discrete skin regions on the foot dorsum would be topographically organized, as with the foot sole. METHODS: Nonnoxious electrical stimulation was delivered to five discrete locations on the dorsal surface of the foot during treadmill walking...
December 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/29135720/clinical-outcome-following-total-joint-replacement-and-arthrodesis-for-hallux-rigidus-a-systematic-review
#18
Jasper Stevens, Robin T A L de Bot, Joris P S Hermus, Lodewijk W van Rhijn, Adhiambo M Witlox
BACKGROUND: Hallux rigidus is a common cause of foot pain in the elderly and has a negative impact on quality of life. Several operative treatment options are available for feet that are refractory to conservative treatment. Of these, total joint replacement and arthrodesis of the first metatarsophalangeal joint are the most commonly performed interventions. Nevertheless, it is still not known which intervention results in the best clinical outcome and the fewest complications. METHODS: PubMed/MEDLINE, Embase, and the Cochrane Library were systematically searched for studies assessing outcome with the American Orthopaedic Foot & Ankle Society-Hallux Metatarsophalangeal Interphalangeal (AOFAS-HMI) score, Foot Function Index (FFI), visual analog scale (VAS) for pain, or Short Form-36 (SF-36) in patients who underwent an arthrodesis or total joint replacement for the treatment of symptomatic hallux rigidus...
November 14, 2017: JBJS Reviews
https://www.readbyqxmd.com/read/29133920/energy-neutral-the-human-foot-and-ankle-subsections-combine-to-produce-near-zero-net-mechanical-work-during-walking
#19
Kota Z Takahashi, Kate Worster, Dustin A Bruening
The human foot and ankle system is equipped with structures that can produce mechanical work through elastic (e.g., Achilles tendon, plantar fascia) or viscoelastic (e.g., heel pad) mechanisms, or by active muscle contractions. Yet, quantifying the work distribution among various subsections of the foot and ankle can be difficult, in large part due to a lack of objective methods for partitioning the forces acting underneath the stance foot. In this study, we deconstructed the mechanical work production during barefoot walking in a segment-by-segment manner (hallux, forefoot, hindfoot, and shank)...
November 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29132880/rivaroxaban-with-or-without-aspirin-in-patients-with-stable-peripheral-or-carotid-artery-disease-an-international-randomised-double-blind-placebo-controlled-trial
#20
Sonia S Anand, Jackie Bosch, John W Eikelboom, Stuart J Connolly, Rafael Diaz, Peter Widimsky, Victor Aboyans, Marco Alings, Ajay K Kakkar, Katalin Keltai, Aldo P Maggioni, Basil S Lewis, Stefan Störk, Jun Zhu, Patricio Lopez-Jaramillo, Martin O'Donnell, Patrick J Commerford, Dragos Vinereanu, Nana Pogosova, Lars Ryden, Keith A A Fox, Deepak L Bhatt, Frank Misselwitz, John D Varigos, Thomas Vanassche, Alvaro A Avezum, Edmond Chen, Kelley Branch, Darryl P Leong, Shrikant I Bangdiwala, Robert G Hart, Salim Yusuf
BACKGROUND: Patients with peripheral artery disease have an increased risk of cardiovascular morbidity and mortality. Antiplatelet agents are widely used to reduce these complications. METHODS: This was a multicentre, double-blind, randomised placebo-controlled trial for which patients were recruited at 602 hospitals, clinics, or community practices from 33 countries across six continents. Eligible patients had a history of peripheral artery disease of the lower extremities (previous peripheral bypass surgery or angioplasty, limb or foot amputation, intermittent claudication with objective evidence of peripheral artery disease), of the carotid arteries (previous carotid artery revascularisation or asymptomatic carotid artery stenosis of at least 50%), or coronary artery disease with an ankle-brachial index of less than 0·90...
November 10, 2017: Lancet
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