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https://www.readbyqxmd.com/read/28888523/mechanical-alignment-technique-for-tka-are-there-intrinsic-technical-limitations
#1
Charles Rivière, FarhadIranpour, Edouard Auvinet, ArashAframian, Kirsty Asare, Simon Harris, Justin Cobb, Sébastien Parratte
BACKGROUND: Mechanically aligned (MA) total knee arthroplasty (TKA) is affected by disappointing functional outcomes in spite of the recent improvements in surgical precision and implant designs. This might suggest the existence of intrinsic technical limitations. Our study aims to compare the prosthetic and native trochlear articular surfaces and to estimate the extent of collateral ligament imbalance which is technically un-correctable by collateral ligament release when TKA implants are mechanically aligned...
September 6, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28869812/the-effects-of-prosthetic-foot-stiffness-on-transtibial-amputee-walking-mechanics-and-balance-control-during-turning
#2
Courtney E Shell, Ava D Segal, Glenn K Klute, Richard R Neptune
BACKGROUND: Little evidence exists regarding how prosthesis design characteristics affect performance in tasks that challenge mediolateral balance such as turning. This study assesses the influence of prosthetic foot stiffness on amputee walking mechanics and balance control during a continuous turning task. METHODS: Three-dimensional kinematic and kinetic data were collected from eight unilateral transtibial amputees as they walked overground at self-selected speed clockwise and counterclockwise around a 1-meter circle and along a straight line...
August 15, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28862042/the-component-timed-up-and-go-test-the-utility-and-psychometric-properties-of-using-a-mobile-application-to-determine-prosthetic-mobility-in-people-with-lower-limb-amputations
#3
Sheila M Clemens, Robert S Gailey, Christopher L Bennett, Paul F Pasquina, Neva J Kirk-Sanchez, Ignacio A Gaunaurd
OBJECTIVE: Using a custom mobile application to evaluate the reliability and validity of the Component Timed-Up-and-Go test to assess prosthetic mobility in people with lower limb amputation. DESIGN: Cross-sectional design. SETTING: National conference for people with limb loss. SUBJECTS: A total of 118 people with non-vascular cause of lower limb amputation participated. Subjects had a mean age of 48 (±13.7) years and were an average of 10 years post amputation...
August 1, 2017: Clinical Rehabilitation
https://www.readbyqxmd.com/read/28842365/spinal-deformity-changes-in-children-with-long-term-vertical-expandable-prosthetic-titanium-rib-veptr-treatment
#4
Andrea S Gantner, Lena Braunschweig, Konstantinos Tsaknakis, Heiko M Lorenz, Anna K Hell
BACKGROUND CONTEXT: In several studies, vertical expandable prosthetic titanium rib (VEPTR) implants have shown good scoliosis control in children with the longest reported follow-up (f/u) of 3.6 years. For growing rods, recent studies suggest a decreased efficiency of correction starting just after that time. To our knowledge, no long-term results of children with VEPTR treatment are available. PURPOSE: To evaluate spinal deformity in scoliotic children and to investigate correction potential of VEPTR implants at several time points of treatment, particularly after long-term f/u...
August 22, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28814050/segmental-contributions-to-sagittal-plane-whole-body-angular-momentum-when-using-powered-compared-to-passive-ankle-foot-prostheses-on-ramps
#5
Nathaniel T Pickle, Anne K Silverman, Jason M Wilken, Nicholas P Fey
Understanding the effects of an assistive device on dynamic balance is crucial, particularly for robotic leg prostheses. Analyses of dynamic balance commonly evaluate the range of whole-body angular momentum (H). However, the contributions of individual body segments to overall H throughout gait may yield futher insights, specifically for people with transtibial amputation using powered prostheses. We evaluated segment contributions to H using Statistical Parametric Mapping to assess the effects of prosthesis type (powered vs passive) and ramp angle on segmental coordination...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28727237/pre-hydrated-sterile-acellular-dermal-matrix-allograft-in-breast-reconstruction-review-of-a-single-unit-s-experience
#6
Justin James, Brigid Corrigan, Christobel Saunders
BACKGROUND: The acellular dermal matrix (Flex HD) (FHD) became available for use in Western Australia in 2014 to aid prosthetic breast reconstruction and this descriptive study aims to review and discuss a single institution's experience since its introduction. METHODS: By retrospective case note, review data were collected for all patients who underwent prosthetic breast reconstruction with the aid of FHD between January 2014 and August 2015 in our institution...
July 20, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28704685/dynamic-balance-changes-within-three-weeks-of-fitting-a-new-prosthetic-foot-component
#7
Jenny A Kent, Nicholas Stergiou, Shane R Wurdeman
Balance during walking is of high importance to prosthesis users and may affect walking during baseline observation and evaluation. The aim of this study was to determine whether changes in walking balance occurred during an adaptation period following the fitting of a new prosthetic component. Margin of stability in the medial-lateral direction (MOSML) and an anterior instability margin (AIM) were used to quantify the dynamic balance of 21 unilateral transtibial amputees during overground walking. Participants trialled two prosthetic feet presenting contrasting movement/balance constraints; a Higher Activity foot similar to that of their own prosthesis, and a Lower Activity foot...
July 5, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28692486/standard-and-amputation-adjusted-body-mass-index-measures-comparison-and-relevance-to-functional-measures-weight-related-comorbidities-and-dieting
#8
Christopher Kevin Wong, Ryan J Wong
People with limb loss may misjudge weight-related health when not adjusting body mass index (BMI) for amputation level. This cross-sectional, community-based study compared BMI and amputation-adjusted BMI (A-BMI) and evaluated relationships among BMI categories, function, and dieting. Subjects provided self-reported demographic, functional, and medical/prosthetic data including height and weight and completed performance-based balance and gait measures. A Web-based A-BMI calculator adjusted for amputation levels...
July 7, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28691574/enhancement-of-a-prosthetic-knee-with-a-microprocessor-controlled-gait-phase-switch-reduces-falls-and-improves-balance-confidence-and-gait-speed-in-community-ambulators-with-unilateral-transfemoral-amputation
#9
Sara Agueda Fuenzalida Squella, Andreas Kannenberg, Ângelo Brandão Benetti
BACKGROUND: Despite the evidence for improved safety and function of microprocessor stance and swing-controlled prosthetic knees, non-microprocessor-controlled prosthetic knees are still standard of care for persons with transfemoral amputations in most countries. Limited feature microprocessor-control enhancement of such knees could stand to significantly improve patient outcomes. OBJECTIVES: To evaluate gait speed, balance, and fall reduction benefits of the new 3E80 default stance hydraulic knee compared to standard non-microprocessor-controlled prosthetic knees...
July 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28628379/visuomotor-behaviors-and-performance-in-a-dual-task-paradigm-with-and-without-vibrotactile-feedback-when-using-a-myoelectric-controlled-hand
#10
Eitan Raveh, Jason Friedman, Sigal Portnoy
Prosthesis users allocate visual attention to their prosthetic hand while performing activities of daily living (ADLs), due to absence of sensory feedback. Dual-task assignments present competition for visual attention and may affect the performance of ADLs. Vibrotactile feedback (VTF) is a frequently-used method to provide prosthesis users with tactile feedback. However, the effect of adding VTF on visual attention and performance in a motor dual-task paradigm has not been investigated. Our aim was to compare visual attention and performance during ADLs in a motor dual-task paradigm when using binary VTF and without using VTF...
June 19, 2017: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/28597840/-how-to-treat-hypoplasia-of-the-lateral-upper-incisors-by-canine-substitution-a-clinical-case
#11
Asmae Benkaddour, Hicham Benyahia, Bouabid El Mohtarim, Fatima Zaoui
INTRODUCTION: Facing a patient with a morphological or numerical disorder of the lateral upper incisors (mainly pegged or missing incisor), the orthodontist has to choose between two treatment options : either spatial planning for a prosthetic restoration, or space closure with substitution of the lateral incisors by canines; the choice depends on the clinical context we are faced with. Each treatment option has its advantages and disadvantages and it is hard to tip the balance in one direction or another...
June 2017: L' Orthodontie Française
https://www.readbyqxmd.com/read/28512551/consensus-statements-and-clinical-recommendations-on-treatment-indications-surgical-procedures-prosthetic-protocols-and-complications-following-all-on-4-standard-treatment-9th-mozo-grau-ticare-conference-in-quintanilla-spain
#12
REVIEW
Miguel Penarrocha-Diago, María Penarrocha-Diago, Regino Zaragozí-Alonso, David Soto-Penaloza, Meeting On Behalf Of The Ticare Consensus
OBJECTIVES: The present consensus report critically evaluates the scientific evidence based on a comprehensive systematic review of the All-On-4 treatment concept, focusing primarily on the treatment indications, surgical procedures and prosthetic protocols, and secondarily on the mechanical and biological complications involved. MATERIAL AND METHODS: A systematic review was made in advance of the meeting. Consensus statements, treatment guidelines and recommendations for future research were based on within-group as well as plenary debates and discussions of the systematic review...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28501110/arachidonic-acid-causes-hidden-blood-loss-like-red-blood-cell-damage-through-oxidative-stress-reactions
#13
Tao Yuan, Yu Cong, Jia Meng, Hong Qian, Wei Ye, Wen-Shuang Sun, Jian-Ning Zhao, Ni-Rong Bao
BACKGROUND: Hidden blood loss (HBL) often occurs in the prosthetic replacement for joint, but the mechanism is still not clear. MATERIALS AND METHODS: This study tried to establish an animal model of HBL by injecting arachidonic acid (AA) into the Sprague-Dawley rats. Different concentrations of AA were injected into the tail veins of the rats, and blood samples were collected before and after administration at 24, 48, and 72 h. A complete blood count was obtained by to find the hemoglobin (Hb) and red blood cell (RBC) count changes...
May 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28461793/nina-braunwald-a-female-pioneer-in-cardiac-surgery
#14
Nikhil Sabharwal, Harmanjit Dev, Hassiba Smail, David C McGiffin, Pankaj Saxena
Nina Starr Braunwald, the first female cardiac surgeon, made headlines during a time when almost all specialty surgeons were men. Women have typically been deterred from entering surgical specialties, in part because of their traditional dual burden of managing their households and careers. Instead, female medical students and junior doctors have tended to be more attracted to medical specialties. This was the reality during Dr. Braunwald's venture into medicine in 1949. However, she never allowed negative ideas to keep her from joining a surgical training program...
April 2017: Texas Heart Institute Journal
https://www.readbyqxmd.com/read/28439308/vertical-expandable-prosthetic-titanium-ribs-veptr-in-early-onset-scoliosis-impact-on-thoracic-compliance-and-sagittal-balance
#15
M R Konieczny, A-K Ehrlich, R Krauspe
BACKGROUND: Theoretically, dynamic thoracic compliance (DTC) should be reduced by vertical expandable prosthetic titanium ribs (VEPTR) since titanium rods, scar tissue and ossifications increase stiffness of the rib cage. The effect of VEPTR on thoracic compliance has not yet been elucidated. The impact of VEPTR on the development of sagittal balance has not been fully investigated. PATIENTS AND METHODS: In a retrospective study, we investigated 21 consecutive children who were treated by VEPTR from 2004 to 2011 and three control groups...
2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28403859/managing-uncertainty-a-qualitative-study-of-surgeons-decision-making-for-one-stage-and-two-stage-revision-surgery-for-prosthetic-hip-joint-infection
#16
Andrew J Moore, Ashley W Blom, Michael R Whitehouse, Rachael Gooberman-Hill
BACKGROUND: Approximately 88,000 primary hip replacements are performed in England and Wales each year. Around 1% go on to develop deep prosthetic joint infection. Between one-stage and two-stage revision arthroplasty best treatment options remain unclear. Our aims were to characterise consultant orthopaedic surgeons' decisions about performing either one-stage or two-stage revision surgery for patients with deep prosthetic infection (PJI) after hip arthroplasty, and to identify whether a randomised trial comparing one-stage with two-stage revision would be feasible...
April 12, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28399873/influence-of-functional-task-oriented-mental-practice-on-the-gait-of-transtibial-amputees-a-randomized-clinical-trial
#17
RANDOMIZED CONTROLLED TRIAL
Rodrigo Gontijo Cunha, Paulo José Guimarães Da-Silva, Clarissa Cardoso Dos Santos Couto Paz, Ana Carolina da Silva Ferreira, Carlos Julio Tierra-Criollo
BACKGROUND: Mental practice (MP) through motor imagery is a cognitive training strategy used to improve locomotor skills during rehabilitation programs. Recent works have used MP tasks to investigate the neurophysiology of human gait; however, its effect on functional performance has not been evaluated. In the present study, the influence of gait-oriented MP tasks on the rehabilitation process of gait in transtibial amputees was investigated by assessing the vertical (V), anterior-posterior (AP), and medio-lateral (ML) ground reaction forces (GRFs) and the time duration of the support phase of the prosthetic limb...
April 11, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28359871/evaluation-of-functional-parameters-in-the-occlusion-of-complete-denture-wearers-before-and-after-prosthetic-treatment
#18
Kuć Joanna, Sierpińska Teresa, Gołębiewska Maria
PURPOSE: The aim of the study was to evaluate functional parameters of the occlusion in complete denture wearers before and after prosthetic treatment. METHODS: The sample used as the basis for the present study consisted of 50 healthy Caucasian patients (35 women and 15 men), aged from 44 to 86 years (mean=69.18±10), with a total deficiency of teeth. All patients received new complete dentures. Each patient underwent lateral radiograph with the presence of complete dentures, both before (initially existing dentures) and after the prosthetic treatment (new restorations)...
March 27, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28345511/-complete-removable-denture-retained-by-symphyseal-implant
#19
A Abdelkoui, N Lakhssassi, N Merzouk, S Berrada
INTRODUCTION: Edentulous patients often hope for stable and retentive prostheses. In very unfavorable anatomophysiological circumstances, the implant-retained removable full denture is a simple and reliable option that considerably optimizes the prosthetic balance. We present the case of one of those patients taken in charge in our department. OBSERVATION: A full edentulous 82 years old male patient was referred for a prosthetic rehabilitation. He presented with a negative mandibular crest and a very tonic peri-prosthetic musculature in the anterior region...
February 22, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28293984/hip-prosthesis-in-sitting-posture-for-bilateral-transfemoral-amputee-after-burn-injury-a-case-report
#20
Yukiyo Shimizu, Hirotaka Mutsuzaki, Takayuki Maezawa, Yuji Idei, Kazuya Takao, Ryoko Takeuchi, Shinzo Onishi, Yasushi Hada, Masashi Yamazaki, Yasuyoshi Wadano
BACKGROUND: To overcome the challenges of rehabilitation of bilateral transfemoral amputees, we developed a novel "hip prosthesis in the sitting posture." Case Description and Methods: A 64-year-old male bilateral transfemoral amputee was transferred for rehabilitation 4 months following a burn injury. His wounds remained unhealed for 20 months; thus, he was unable to participate in standing training with the standard prosthetic sockets. Hip prosthesis in the sitting posture has very little friction between the sockets and residual limbs, which facilitated our patient to begin standing and walking exercises...
December 1, 2016: Prosthetics and Orthotics International
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