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https://www.readbyqxmd.com/read/27881551/comparison-of-the-otto-bock-solid-ankle-cushion-heel-foot-with-wooden-keel-to-the-low-cost-cr-equipements%C3%A2-solid-ankle-cushion-heel-foot-with-polypropylene-keel-a-randomized-prospective-double-blind-crossover-study-assessing-patient-satisfaction-and-energy
#1
Alain Lacraz, Stéphane Armand, Katia Turcot, Gorki Carmona, Richard Stern, Olivier Borens, Mathieu Assal
BACKGROUND: The International Committee of the Red Cross supports a worldwide program of prosthetic fitting and rehabilitation. In this context, a prosthetic foot was developed and widely distributed in least developed countries. STUDY DESIGN: Prospective, randomized, double-blind, controlled study. OBJECTIVE: To compare patient satisfaction and energy expenditure during ambulation between a low-cost prosthetic foot designed with a polypropylene keel (CR-Equipements(™) solid ankle cushion heel, International Committee of the Red Cross) to a well-recognized solid ankle cushion heel foot with a wooden keel (solid ankle cushion heel foot, Otto Bock)...
November 22, 2016: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/27866037/preoperative-preparation-of-a-patient-with-grade-ii-leg-lymphedema-for-his-third-hip-replacement-surgery
#2
Maria de Fátima Guerreiro Godoy, Livia Maria Pereira de Godoy, Renata Lopes Pinto, Jose Maria Pereira de Godoy
INTRODUCTION: The treatment of lymphedema remains a challenge to modern medicine, due to the characteristics of the disease. CASE PRESENTATION: Report on the case of a 75-year-old patient with lower limb lymphedema for treatment prior to surgery. At age 45, he made the first hip replacement surgery in the left leg. One year later he performed the same surgery on the right leg. At that time his legs had slight ankle edema mainly of the left leg and the entire left leg was affected by lymphedema...
September 28, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27846395/mid-term-functional-outcome-of-a-total-arthroplasty-of-the-first-metatarsophalangeal-joint
#3
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/27826906/amputation-and-rotationplasty-in-children-with-limb-deficiencies-current-concepts
#4
REVIEW
Ralph Sakkers, Iris van Wijk
PURPOSE: Amputations and fitting surgery have a long history in children with limb deficiencies. With the current developments in limb reconstruction and new techniques in prosthetics, the indications for amputation and fitting surgery might have shifted, but still have a very important role in creating high functional performance, optimal participation and quality of life. The purpose of this current concepts article is to give an overview of the indications, dilemmas and technical considerations in the decision-making for amputation and fitting surgery...
November 8, 2016: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/27746585/prosthetic-leg-control-in-the-nullspace-of-human-interaction
#5
Robert D Gregg, Anne E Martin
Recent work has extended the control method of virtual constraints, originally developed for autonomous walking robots, to powered prosthetic legs for lower-limb amputees. Virtual constraints define desired joint patterns as functions of a mechanical phasing variable, which are typically enforced by torque control laws that linearize the output dynamics associated with the virtual constraints. However, the output dynamics of a powered prosthetic leg generally depend on the human interaction forces, which must be measured and canceled by the feedback linearizing control law...
July 2016: Proceedings of the ... American Control Conference
https://www.readbyqxmd.com/read/27702444/increasing-ankle-push-off-work-with-a-powered-prosthesis-does-not-necessarily-reduce-metabolic-rate-for-transtibial-amputees
#6
Roberto E Quesada, Joshua M Caputo, Steven H Collins
Amputees using passive ankle-foot prostheses tend to expend more metabolic energy during walking than non-amputees, and reducing this cost has been a central motivation for the development of active ankle-foot prostheses. Increased push-off work at the end of stance has been proposed as a way to reduce metabolic energy use, but the effects of push-off work have not been tested in isolation. In this experiment, participants with unilateral transtibial amputation (N=6) walked on a treadmill at a constant speed while wearing a powered prosthesis emulator...
October 3, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27685013/knee-rotationplasty-motion-of-the-body-centre-of-mass-during-walking
#7
Viviana Rota, Maria Grazia Benedetti, Yusuke Okita, Marco Manfrini, Luigi Tesio
Knee rotationplasty (KRP) is a type of surgery in which the rotated ankle serves as a new knee after being removed for bone tumor. Although this limb salvage surgery is rarely indicated in properly selected patients, it may offer functional advantages over transfemoral amputation, and more durable results compared with a prosthesis. The walking mechanics of adult patients after KRP is believed to be close to that of below-knee amputees. In this study, we evaluated steady-state walking of KRP patients from the viewpoint of the overall muscle power needed to keep the body centre of mass in motion...
September 28, 2016: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/27676893/articulated-vs-fixed-carbon-fiber-prosthesis-in-individual-with-partial-foot-amputation-study-case
#8
Marie Laberge-Malo, Reggie C Hamdy, Laurent Ballaz, Audrey Parent, Annie Pouliot
OBJECTIVE: Toe filler combined to ankle-foot orthosis (AFO) can be used to improve gait after a partial foot amputation. The AFO supports the plantar aspect of the foot, and the toe filler gives a longer lever arm that helps for pivoting over the lost metatarsals. However, the AFO type can influence gait parameters. The objective of this study case was to evaluate the effect of prosthesis with toe filler combined to: - an articulated AFO; - a fixed carbon-fiber AFO on gait. PATIENTS AND METHODS: A gait analysis was practiced on a 20-year-old male with a partial foot amputation...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27676772/prosthesis-alignment-and-knee-valgus-in-individual-with-fibula-hemimelia-study-case
#9
Marie Laberge-Malo, Xavier Rodrigue, Céline Goyette, Annie Pouliot-Laforte, Audrey Parent, Isabelle Marcoux, Laurent Ballaz
OBJECTIVE: Fibula hemimelia is a congenital malformation of the lower limbs that is associated to aplasia or hypoplasia of the fibula. This condition is characterized by knee valgus which tends to increase over years in children walking with a below knee prosthesis. However, few recommendations are available regarding the optimal prosthesis alignment for amputated children with fibula hemimelia. The aim of this case study was to compare different prosthesis alignments and to assess their impact on knee joint moment in the frontal plane during walking...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/27670646/whole-body-angular-momentum-during-sloped-walking-using-passive-and-powered-lower-limb-prostheses
#10
Nathaniel T Pickle, Jason M Wilken, Jennifer M Aldridge Whitehead, Anne K Silverman
Sloped walking requires altered strategies for maintaining dynamic balance relative to level-ground walking, as evidenced by changes in sagittal-plane whole-body angular momentum (H) in able-bodied individuals. The ankle plantarflexor muscles are critical for regulating H, and functional loss of these muscles from transtibial amputation affects this regulation. However, it is unclear if a powered prosthesis, which more closely emulates intact ankle function than a passive energy-storage-and-return prosthesis, affects H differently during sloped walking...
October 3, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27570639/informing-ankle-foot-prosthesis-prescription-through-haptic-emulation-of-candidate-devices
#11
Joshua M Caputo, Peter G Adamczyk, Steven H Collins
Robotic prostheses can improve walking performance for amputees, but prescription of these devices has been hindered by their high cost and uncertainty about the degree to which individuals will benefit. The typical prescription process cannot well predict how an individual will respond to a device they have never used because it bases decisions on subjective assessment of an individual's current activity level. We propose a new approach in which individuals 'test drive' candidate devices using a prosthesis emulator while their walking performance is quantitatively assessed and results are distilled to inform prescription...
May 2015: IEEE International Conference on Robotics and Automation: ICRA: [proceedings]
https://www.readbyqxmd.com/read/27550190/subsidence-of-total-ankle-component-associated-with-deterioration-of-an-ankle-scale-in-non-inflammatory-arthritis-but-not-in-rheumatoid-arthritis
#12
Takahiro Iwata, Hiromu Ito, Moritoshi Furu, Masahiro Ishikawa, Masayuki Azukizawa, Hiroyuki Yoshitomi, Takayuki Fujii, Haruhiko Akiyama, Shuichi Matsuda
OBJECTIVES: Modern three-component total ankle arthroplasty (TAA) has favorable clinical results and survival rates. However, radiographic deterioration and worsening of clinical symptoms may occur in patients with rheumatoid arthritis (RA) or non-inflammatory arthritis (NA). The associations between outcomes and clinical and radiological factors are not clear. We compared midterm clinical and radiographic outcomes after TAA between patients with RA and those with NA. METHODS: Twenty-six TAAs were performed using a three-component prosthesis, the FINE Total Ankle System during the study period...
August 23, 2016: Modern Rheumatology
https://www.readbyqxmd.com/read/27547456/short-term-effect-of-prosthesis-transforming-sensory-modalities-on-walking-in-stroke-patients-with-hemiparesis
#13
Dai Owaki, Yusuke Sekiguchi, Keita Honda, Akio Ishiguro, Shin-Ichi Izumi
Sensory impairments caused by neurological or physical disorders hamper kinesthesia, making rehabilitation difficult. In order to overcome this problem, we proposed and developed a novel biofeedback prosthesis called Auditory Foot for transforming sensory modalities, in which the sensor prosthesis transforms plantar sensations to auditory feedback signals. This study investigated the short-term effect of the auditory feedback prosthesis on walking in stroke patients with hemiparesis. To evaluate the effect, we compared four conditions of auditory feedback from plantar sensors at the heel and fifth metatarsal...
2016: Neural Plasticity
https://www.readbyqxmd.com/read/27544619/a-prosthesis-specific-multi-link-segment-model-of-lower-limb-amputee-sprinting
#14
Stacey M Rigney, Anne Simmons, Lauren Kark
Lower-limb amputees commonly utilize non-articulating energy storage and return (ESAR) prostheses for high impact activities such as sprinting. Despite these prostheses lacking an articulating ankle joint, amputee gait analysis conventionally features a two-link segment model of the prosthetic foot. This paper investigated the effects of the selected link segment model׳s marker-set and geometry on a unilateral amputee sprinter׳s calculated lower-limb kinematics, kinetics and energetics. A total of five lower-limb models of the Ottobock(®) 1E90 Sprinter were developed, including two conventional shank-foot models that each used a different version of the Plug-in-Gait (PiG) marker-set to test the effect of prosthesis ankle marker location...
October 3, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27540011/long-term-functional-and-radiographic-outcome-of-a-mobile-bearing-ankle-prosthesis
#15
Yvonne R A Kerkhoff, Nienke M Kosse, Wieneke P Metsaars, Jan Willem K Louwerens
BACKGROUND: Total ankle arthroplasty is an accepted alternative to arthrodesis of the ankle. However, complication and failure rates remain high. Long-term results of the Scandinavian Total Ankle Replacement (STAR) are limited, with variable complication and failure rates observed. This prospective study presents the long-term survivorship and postoperative complications of the STAR prosthesis. METHODS: Between May 1999 and June 2008, 134 primary total ankle arthroplasties were performed using the STAR prosthesis in 124 patients...
December 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27502236/conversion-of-ankle-autofusion-to-total-ankle-replacement-using-the-salto-xt-revision-prosthesis
#16
Emilie R C Williamson, Constantine A Demetracopoulos, Scott J Ellis
Few reports in the literature have described the conversion of a surgically fused ankle to a total ankle replacement. The takedown of an autofusion and conversion to a prosthesis has not been described. We report the case of a patient with severe rheumatoid arthritis with an ankle autofusion fixed in equinus and severe talonavicular arthritis that was converted to ankle replacement using the Salto XT revision system. We describe the reasons why the decision was made to perform total ankle arthroplasty while concomitantly fusing the talonavicular joint, and discuss the rationale of the various surgical treatment options considered...
September 2016: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27502222/short-term-results-of-the-mobility-total-ankle-system-clinical-and-radiographic-outcome
#17
Yvonne R A Kerkhoff, Nienke M Kosse, Jan Willem K Louwerens
BACKGROUND: Ankle arthroplasty is increasingly used to reduce pain and improve or maintain joint mobility in end-stage ankle arthritis. The aim of this study was to assess the clinical and radiographic short term results of the Mobility prosthesis. METHODS: Complications, secondary operations, failures and the survival rate were retrospectively examined in 67 primary Mobility total ankle arthroplasties. Prosthesis alignment was measured and patient reported outcomes were assessed with the use of questionnaires...
September 2016: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27480501/sagittal-distal-tibial-articular-angle-and-the-relationship-to-talar-subluxation-in-total-ankle-arthroplasty
#18
Andrea Veljkovic, Adam Norton, Peter Salat, Kaniza Zahra Abbas, Charles Saltzman, John E Femino, Phinit Phisitkul, Annunziato Amendola
BACKGROUND: Longevity of total ankle replacement (TAR) depends heavily on anatomic alignment. The lateral talar station (LTS) classifies the sagittal position of the talus relative to the tibia. We hypothesized that correcting the sagittal distal tibial articular angle (sDTAA) during TAR would anatomically realign the tibiotalar joint and potentially reduce the risk of prosthesis subluxation. METHODS: The LTS (millimeters) and sDTAA (degrees) were measured twice by 2 blinded observers using weight-bearing lateral ankle radiographs obtained before (n = 96) and after (n = 94) TAR, with excellent interobserver and intraobserver reliability (correlation coefficient >0...
September 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27412962/radiographic-assessment-of-a-medullary-total-ankle-prosthesis-a-test-of-agreement-and-reliability
#19
Mark A Prissel, Gregory C Berlet, Ryan T Scott, Justin L Daigre, Patrick E Bull, Kyle S Peterson, Christy L Collins, Christopher F Hyer
: Total ankle replacement (TAR) is a viable alternative to ankle fusion in certain patients with end-stage ankle arthritis. Despite the importance of understanding alignment and movement of the prosthesis, there is no standardized radiographic method for evaluating the position and movement of the INBONE 2 prosthesis. The aims of this study were to describe a radiographic measurement protocol for INBONE 2 for clinical practice and research while determining the interobserver and intraobserver reliability using standard weightbearing radiographs...
July 13, 2016: Foot & Ankle Specialist
https://www.readbyqxmd.com/read/27408487/nonlinear-analysis-of-postural-sway-in-subjects-with-below-knee-amputation-during-opened-and-closed-eye-conditions
#20
Meissam Sadeghisani, Mohammad Taghi Karimi, Mostafa Kamali
OBJECTIVE: The aim of this study was to compare the structure of postural sway in healthy people and amputees with SACH foot (solid ankle cushion heel) and single axis foot during standing. METHODS: Twenty healthy, 10 amputees with single axis foot, and 10 amputees with SACH foot participated in this study. The structure of postural sway of the subjects was evaluated using approximate entropy (ApEn). RESULTS: People with SACH foot prosthesis exhibit increased regularity in postural sway compared to healthy people and people with single axis foot...
September 2016: Journal of Orthopaedics
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