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https://www.readbyqxmd.com/read/29908655/analysis-of-surface-to-surface-distance-mapping-during-three-dimensional-motion-at-the-ankle-and-subtalar-joints
#1
Sorin Siegler, Tobias Konow, Claudio Belvedere, Andrea Ensini, Rewati Kulkarni, Alberto Leardini
Joint surface interaction and ligament constraints determine the kinematic characteristics of the ankle and subtalar joints. Joint surface interaction is characterized by joint contact mechanics and by relative joint surface position potentially characterized by distance mapping. While ankle contact mechanics was investigated, limited information is available on joint distance mapping and its changes during motion. The purpose of this study was to use image-based distance mapping to quantify this interaction at the ankle and subtalar joints during tri-planar rotations of the ankle complex...
June 7, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29891129/severe-ankle-arthritis-after-multiple-hemarthrosis-secondary-to-factor-xi-deficiency-a-case-report
#2
Steven M Douthett, Lawrence Fallat
Hemophilic arthropathy of the ankle is an extremely unique condition that affects a small subset of the population in the United States. We present the case of a 66-year-old male with factor XI deficiency, which, over years of repetitive microtrauma as a professional soccer player, led to multiple hemarthrosis and severe arthropathy of his right ankle. The patient successfully underwent total ankle replacement arthroplasty and was able to return to recreational sports and competitive road cycling.
June 8, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29867269/total-ankle-replacement-an-alternative-to-ankle-arthrodesis
#3
A Ramasamy, M Lynch-Wong, A Wilson
No abstract text is available yet for this article.
May 2018: Ulster Medical Journal
https://www.readbyqxmd.com/read/29791703/biological-intercalary-reconstruction-with-bone-grafts-after-joint-sparing-resection-of-the-lower-limb-is-this-an-effective-and-durable-solution-for-joint-preservation
#4
Francesco Muratori, Francesca Totti, Antonio D'Arienzo, Maurizio Scorianz, Guido Scoccianti, Giovanni Beltrami, Francesco Rosario Campo, Carmine Citarelli, Rodolfo Capanna, Domenico Andrea Campanacci
Due to advances in neoadjuvant therapies and preoperative imaging modalities, joint-sparing resections have become appealing in bone tumor surgery. However, the intercalary reconstruction of metadiaphyseal bone defects of the femur and the tibia after juxta-articular tumor resection remains challenging. Both biological and prosthetic reconstructions have been used for joint-sparing resections, but little is known about the long-term outcome of these procedures. The authors reviewed a consecutive series of 64 patients treated with joint-sparing intercalary resection and reconstruction with bone grafts...
June 1, 2018: Surgical Technology International
https://www.readbyqxmd.com/read/29770176/the-top-50-most-cited-articles-on-total-ankle-arthroplasty-a-bibliometric-analysis
#5
Azeem Tariq Malik, Shahryar Noordin
Total Ankle Arthroplasty (TAA) is a relatively new and evolving field in Foot and Ankle surgery. We conducted a citation analysis to identify the characteristics of the top 50 most cited articles on total ankle arthroplasty. Using the Web of Science database and the search strategy total ankle arthroplasty OR total ankle replacement , we identified 2445 articles. After filtering for relevant articles, the top 50 cited articles on total ankle arthroplasty were retrieved for descriptive and statistical analysis...
March 29, 2018: Orthopedic Reviews
https://www.readbyqxmd.com/read/29716723/experimental-evaluation-of-current-and-novel-approximations-of-articular-surfaces-of-the-ankle-joint
#6
Claudio Belvedere, Sorin Siegler, Andrea Ensini, Jason Toy, Paolo Caravaggi, Ramya Namani, Luca Giuseppe Princi, Stefano Durante, Alberto Leardini
Kinematics and flexibility properties of both natural and replaced ankle joints are affected by the geometry of the articulating surfaces. Recent studies proposed an original saddle-shaped, skewed, truncated cone with laterally oriented apex, as tibiotalar contact surfaces for ankle prosthesis. The goal of this study was to compare in vitro this novel design with traditional cylindrical or medially centered conic geometries in terms of their ability to replicate the natural ankle joint mechanics. Ten lower limb cadaver specimens underwent a validated process of custom design for the replacement of the natural ankle joint...
April 24, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29648889/patient-reported-allergies-do-not-predict-poorer-promis-function-pain-and-depression-scores-following-foot-and-ankle-surgery
#7
Devon C Nixon, Brian M Cusworth, Jeremy J McCormick, Jeffrey E Johnson, Sandra E Klein
BACKGROUND: Identifying preoperative risk factors that may portend poorer operative outcomes remains a topic of current interest. In hip and knee arthroplasty patients, the presence of patient-reported allergies (PRAs) has been associated with worse pain and function after joint replacement. However, these results have not been replicated across studies, including in shoulder arthroplasty cases. The impact of PRAs on foot and ankle outcomes has yet to be studied. The purpose of our study was to evaluate whether PRAs influence patient-reported outcome in foot and ankle surgery...
April 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29626655/complications-and-cost-of-single-stage-vs-two-stage-bilateral-unicompartmental-knee-arthroplasty-a-case-control-study
#8
C Siedlecki, P Beaufils, B Lemaire, N Pujol
BACKGROUND: Single-stage bilateral knee arthroplasty, even when unicompartmental, remains controversial, chiefly due to the risk of peri-operative complications. The primary objective of this study was to compare the short-term complication rate and cost of single- vs. two-stage bilateral unicompartmental knee arthroplasty (UCA). The secondary objective was to compare total hospital stay lengths and motion-range recovery. HYPOTHESIS: Single-stage bilateral UCA is a cost-saving alternative that is not associated with higher complication rates compared to two-stage bilateral UCA...
April 4, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29594324/under-corrected-knees-do-not-fail-more-than-aligned-knees-at-8-years-in-fixed-severe-valgus-total-knee-replacement
#9
Bertrand Boyer, Régis Pailhé, Nassima Ramdane, David Eichler, Franck Remy, Matthieu Ehlinger, Gilles Pasquier
PURPOSES: A fixed severe valgus knee is a surgical challenge. A safe post-operative Hip-Knee-Ankle angle (HKA) range of 180° ± 4 was recommended, but recent studies mentioned equal results from outliers of this range. Nevertheless, no distinction was made between varus and valgus knees, as well as over-corrected or under-corrected knees. Did post-operative nonaligned total knee replacements (TKR) from fixed severe valgus knees behave differently from the properly aligned population? Did over-corrected knees behave differently from under-corrected knees? METHODS: Through a multi-center retrospective cohort study, we provided 557 knees of at least 10° of minimal pre-operative valgus; in this population 75 presented a post-operative Hip-Knee-Ankle angle (HKA) outside of the 180° ± 4 range; 23 of them had at least 5° of varus; 52 of them had at least 5° of valgus...
March 28, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29560526/total-ankle-replacement-leads-to-high-revision-rates-in-post-traumatic-end-stage-arthrosis
#10
Yves Gramlich, Oliver Neun, Alexander Klug, Johannes Buckup, Thomas Stein, Arvid Neumann, Sebastian Fischer, Hans-Peter Abt, Reinhard Hoffmann
INTRODUCTION: Extremely heterogeneous revision rates in total ankle arthroplasty (TAA) of the upper ankle joint are reported and result to heterogeneous collectives and to short follow-up times. The aim is to investigate revision rates and the underlying reasons, as well as treatment outcome and quality of life after TAA in post-traumatic cases with sufficient follow-up. METHODS: In 2008-2013, 74 patients with post-traumatic arthrosis were treated using TAA with a Tornier Salto prosthesis, and 60 (35 males and 25 females; mean age 56) were followed-up (mean: 59 months; range 24-91 months)...
March 20, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29557875/a-new-total-ankle-arthroplasty-implant-with-promising-level-iv-results-commentary-on-an-article-by-alexej-barg-md-et-al-early-clinical-and-radiographic-outcomes-of-trabecular-metal-total-ankle-replacement-using-a-transfibular-approach
#11
https://www.readbyqxmd.com/read/29557867/early-clinical-and-radiographic-outcomes-of-trabecular-metal-total-ankle-replacement-using-a-transfibular-approach
#12
Alexej Barg, Clayton C Bettin, Albert H Burstein, Charles L Saltzman, Jeremy Gililland
BACKGROUND: In the last 2 decades, total ankle replacement has gained greater acceptance as a treatment option in patients with end-stage ankle osteoarthritis. However, there is a lack of literature on total ankle replacement using a lateral transfibular approach. Therefore, we sought to report early clinical and radiographic results for a patient cohort treated with total ankle replacement using a lateral transfibular approach, performed by a single surgeon. METHODS: From October 2012 to December 2014, 55 primary total ankle arthroplasties using the Zimmer Trabecular Metal Total Ankle implant were performed in 54 patients (29 male and 25 female; mean age, 67...
March 21, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29551959/bi-articular-knee-ankle-foot-exoskeleton-produces-higher-metabolic-cost-reduction-than-weight-matched-mono-articular-exoskeleton
#13
Philippe Malcolm, Samuel Galle, Wim Derave, Dirk De Clercq
The bi-articular m. gastrocnemius and the mono-articular m. soleus have different and complementary functions during walking. Several groups are starting to use these biological functions as inspiration to design prostheses with bi-articular actuation components to replace the function of the m. gastrocnemius. Simulation studies indicate that a bi-articular configuration and spring that mimic the m. gastrocnemius could be beneficial for orthoses or exoskeletons. Our aim was to test the effect of a bi-articular and spring configuration that mimics the m...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29506397/prospective-cohort-study-on-the-employment-status-of-working-age-patients-after-recovery-from-ankle-arthritis-surgery
#14
Oliver J Gagné, Andrea Veljkovic, Mark Glazebrook, Timothy R Daniels, Murray J Penner, Kevin J Wing, Alastair S E Younger
BACKGROUND: People who are affected by end-stage ankle arthritis are as disabled as those suffering from arthritis in other main articulations of the lower extremity. Once these patients become unable to perform their job duties, they leave the workforce and require financial aid from government agencies, which represents a considerable economic burden. Regardless of whether arthrodesis or arthroplasty is performed, we hypothesized that patients younger than 55 years at the time of surgery should be able to return to work within 2 years and require less social assistance...
March 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29503137/sagittal-ankle-and-midfoot-range-of-motion-before-and-after-revision-total-ankle-replacement-a-retrospective-comparative-analysis
#15
Peter J Hordyk, Brent A Fuerbringer, Thomas S Roukis
The most common reason for a revision total ankle replacement procedure is a painful, stiff ankle even after the initial surgery. Limited and conflicting data are available regarding the change in sagittal foot and ankle range of motion after revision total ankle replacement surgery. We sought to determine whether revision total ankle replacements would reduce compensatory midfoot range of motion. In determining this, a novel radiographic measurement system with stable osseous landmarks is used. A retrospective medical record review of patients who had undergone revision total ankle replacement from January 2009 to June 2016 was performed...
May 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29494748/trends-in-medicare-reimbursement-for-orthopedic-procedures-2000-to-2016
#16
Adam E M Eltorai, Wesley M Durand, Jack M Haglin, Lee E Rubin, Arnold-Peter C Weiss, Alan H Daniels
Understanding trends in reimbursement is critical to the financial sustainability of orthopedic practices. Little research has examined physician fee trends over time for orthopedic procedures. This study evaluated trends in Medicare reimbursements for orthopedic surgical procedures. The Medicare Physician Fee Schedule was examined for Current Procedural Terminology code values for the most common orthopedic and nonorthopedic procedures between 2000 and 2016. Prices were adjusted for inflation to 2016-dollar values...
March 1, 2018: Orthopedics
https://www.readbyqxmd.com/read/29472522/finite-element-study-of-implant-subsidence-and-medial-tilt-in-agility-ankle-replacement
#17
Yunwei Cui, Pan Hu, Ning Wei, Xiaodong Cheng, Wenli Chang, Wei Chen
BACKGROUND Clinical studies indicate that in total ankle arthroplasty, postoperative implant subsidence and medial tilt become two significant concerns of the ankle replacement system, and which are associated with the contact between the bones and the talar component. Up to now, little attention has focused on the contact between the bones and the talar component. MATERIAL AND METHODS In order to address implant subsidence and medial tilt, one three-dimensional finite element model of contact between the bone and the talar components was built with the material properties of the cancellous bone interpolated from the experimental data, which represents variation of material properties through the cancellous bones...
February 23, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29468513/-total-ankle-replacement
#18
REVIEW
Anke Röser, Sebastian Altenberger, Markus Walther
No abstract text is available yet for this article.
September 2017: MMW Fortschritte der Medizin
https://www.readbyqxmd.com/read/29443030/treatment-of-ankle-osteoarthritis-with-total-ankle-replacement-through-a-lateral-transfibular-approach
#19
Federico G Usuelli, Riccardo D'Ambrosi, Luigi Manzi, Camilla Maccario, Cristian Indino
Total ankle replacement (TAR) is a valid option for the treatment of ankle osteoarthritis. The traditional surgical approach for TAR is the anterior approach. Recently, the lateral transfibular approach to the ankle has gained popularity since a new TAR implant was designed to be performed via this approach that results in an ideal visualization of the center of rotation of the ankle and curved resections that allow for sparing bone cuts. The aim of the present paper is to present our preoperative, operative, and postoperative protocols for the treatment of the osteoarthritis of the ankle with TAR via lateral approach...
January 24, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29428222/cost-utility-analysis-in-orthopaedic-trauma-what-pays-a-systematic-review
#20
S Coyle, S Kinsella, B Lenehan, J M Queally
BACKGROUND: As healthcare systems come under ever-increasing pressure to provide more care with fewer resources, emphasis is being placed on value-based systems that maximise quality and minimize cost. The aim of this study was to determine which interventions in fracture care have been demonstrated to be cost effective. METHODS: A systemic review of cost-utility studies on the management of fractures from 1976 to 2015 was carried out using a search of the Cost-Effectiveness Analysis Registry, National Health Service Economic Evaluation Database (NHS EED) and MEDLINE...
March 2018: Injury
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