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https://www.readbyqxmd.com/read/29771620/self-reported-functional-mobility-balance-confidence-and-prosthetic-use-are-associated-with-daily-step-counts-among-individuals-with-a-unilateral-transtibial-amputation
#1
Jaclyn Megan Sions, Elisa Sarah Arch, John Robert Horne
BACKGROUND: Adults postamputation are not meeting physical activity recommendations. Physical activity is an important consideration in prosthetic prescription. The objective of this study was to determine if functional mobility, balance confidence, and prosthetic use are associated with physical activity among adults with a lower-limb amputation. METHODS: This study recruited patients aged 18-85 years with unilateral transtibial amputations. The Cumulative Illness Rating Scale was used to determine comorbidity burden...
June 1, 2018: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/29761748/transfemoral-amputation-adductor-myodesis-using-fibertape-and-knotless-anchors
#2
Andrew R Hsu
Transfemoral amputation is considered the last treatment option for severe infection, vascular disease, trauma, and malignant tumors of the lower extremity that have failed limb salvage. Unopposed pull of the hip abductors causes a flexion-abduction thigh deformity that results in abnormal biomechanics and increased oxygen consumption during ambulation. Myodesis of the adductor tendons is a critical component of transfemoral amputation that creates dynamic muscle balance, enhances prosthetic fitting and function, and improves clinical outcomes...
May 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29760647/discrimination-and-recognition-of-phantom-finger-sensation-through-transcutaneous-electrical-nerve-stimulation
#3
Mengnan Li, Dingguo Zhang, Yao Chen, Xinyu Chai, Longwen He, Ying Chen, Jinyao Guo, Xiaohong Sui
Tactile sensory feedback would make a significant contribution to the state-of-the-art prosthetic hands for achieving dexterous manipulation over objects. Phantom finger sensation, also called referred sensation of lost fingers, can be noninvasively evoked by transcutaneous electrical nerve stimulation (TENS) of the phantom finger territories (PFTs) near the stump for upper-limb amputees. As such, intuitive sensations pertaining to lost fingers could be non-invasively generated. However, the encoding of stimulation parameters into tactile sensations that can be intuitively interpreted by the users remains a significant challenge...
2018: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29752509/current-concepts-and-future-perspectives-in-computer-assisted-navigated-total-knee-replacement
#4
REVIEW
Tomoyuki Matsumoto, Naoki Nakano, John E Lawrence, Vikas Khanduja
BACKGROUND: Total knee replacements (TKR) aim to restore stability of the tibiofemoral and patella-femoral joints and provide relief of pain and improved quality of life for the patient. In recent years, computer-assisted navigation systems have been developed with the aim of reducing human error in joint alignment and improving patient outcomes. METHODS: We examined the current body of evidence surrounding the use of navigation systems and discussed their current and future role in TKR...
May 12, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29723652/kinetic-differences-between-level-walking-and-ramp-descent-in-individuals-with-unilateral-transfemoral-amputation-using-a-prosthetic-knee-without-a-stance-control-mechanism
#5
Yusuke Okita, Nobuya Yamasaki, Takashi Nakamura, Tsutomu Kubo, Atsuko Mitsumoto, Toru Akune
BACKGROUND: Individuals with transfemoral amputation (TFA) have difficulty in descending ramps. Although individuals with TFA who descend ramps are speculated to have greater biomechanical demands, this has not been quantified. RESEARCH QUESTION: How do individuals with TFA wearing a prosthetic knee without a stance control mechanism adapt their gait biomechanics to a slightly declined surface? METHODS: We retrospectively analyzed data of level walking and ramp descent (5° decline) from six subjects with TFA who used a prosthesis without a stance control mechanism...
April 26, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29696409/valvular-heart-disease-and-pregnancy
#6
REVIEW
Emily S Lau, Nandita S Scott
With improving reproductive assistive technologies, advancing maternal age, and improved survival of patients with congenital heart disease, valvular heart disease has become an important cause of morbidity and mortality in pregnant women. In general, stenotic lesions, even those in the moderate range, are poorly tolerated in the face of hemodynamic changes of pregnancy. Regurgitant lesions, however, fare better due to the physiologic afterload reduction that occurs. Intervention on regurgitant valve preconception follows the same principles as a non-pregnant population...
April 26, 2018: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29682092/fem-and-von-mises-analysis-of-osstem-%C3%A2-dental-implant-structural-components-evaluation-of-different-direction-dynamic-loads
#7
Gabriele Cervino, Umberto Romeo, Floriana Lauritano, Ennio Bramanti, Luca Fiorillo, Cesare D'Amico, Dario Milone, Luigi Laino, Francesco Campolongo, Silvia Rapisarda, Marco Cicciù
Purpose: The objective of this investigation is to study prosthodontics and internal components resistance to the masticatory stress and considering different force directions by using Finite Element Method analysis (FEM). The structural materials of the components are usually Titanium alloy grade 4 or 5 and thus, guarantee the integration of the fixture in the bone due to the osteointegration phenomena. Even if the long-term dental implant survival rate is easy to be obtained and confirmed by numerous researches, the related clinical success, due to the alteration of the mechanical and prosthodontics components is still controversial...
2018: Open Dentistry Journal
https://www.readbyqxmd.com/read/29668534/comparison-between-three-types-of-prosthetic-feet-a-randomized-double-blind-single-subject-multiple-rater-trial
#8
Helena Burger, Gaj Vidmar, Branko Zdovc, Dominik Erzar, Metka Zalar
There are many prosthetic feet (Pfeet) on the market, and those in the same category do not necessarily have the same properties. We assessed three different Pfeet in terms of gait patterns on various terrains, balance and walking speed in a randomized double-blind controlled single-subject multiple-rater clinical trial. The patient was a 43-year old man who was an active prosthesis user and was amputated at transtibial level because of injury 17 years ago. One Solid Ankle Cushion Heel and two Dynamic Elastic Response (DER) Pfeet were tried six times in random order...
April 17, 2018: International Journal of Rehabilitation Research. Revue Internationale de Recherches de Réadaptation
https://www.readbyqxmd.com/read/29662779/finite-element-analysis-of-biomechanical-effects-of-total-ankle-arthroplasty-on-the-foot
#9
Yan Wang, Zengyong Li, Duo Wai-Chi Wong, Cheng-Kung Cheng, Ming Zhang
Background: Total ankle arthroplasty is gaining popularity as an alternation to ankle arthrodesis for end-stage ankle arthritis. Owing to the complex anatomical characteristics of the ankle joint, total ankle arthroplasty has higher failure rates. Biomechanical exploration of the effects of total ankle arthroplasty on the foot and ankle is imperative for the precaution of postoperative complications. The objectives of this study are (1) to investigate the biomechanical differences of the foot and ankle between the foot with total ankle arthroplasty and the intact foot and (2) to investigate the performance of the three-component ankle prosthesis...
January 2018: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29653108/validation-of-the-narrowing-beam-walking-test-in-lower-limb-prosthesis-users
#10
Andrew Sawers, Brian Hafner
OBJECTIVE: To evaluate the content, construct, and discriminant validity of the Narrowing Beam Walking Test (NBWT), a performance-based balance test for lower limb prosthesis users. DESIGN: Cross-sectional study. SETTING: Research laboratory and prosthetics clinic. PARTICIPANTS: Forty unilateral transtibial and transfemoral prosthesis users. INTERVENTION: Not applicable. MAIN OUTCOME MEASURE(S): Content validity was examined by quantifying the percentage of participants receiving maximum or minimum scores (i...
April 10, 2018: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/29576646/sloppy-hinge-prosthetic-replacement-in-old-healed-side-swipe-injuries-of-elbow-long-term-results
#11
Debadyuti Baksi, A K Pal, D P Baksi
Background: Sideswipe injuries of elbow often poses significant functional loss resulting from devastating injuries involving osseoligamentous structures as well as multilevel soft tissue injuries around the elbow. Inspite of treatment, no conscientious treatment opinion is available in the literature to provide optimum functional outcome. The objective of this study is to evaluate the results of prosthetic replacement of old healed sideswipe injuries of elbow with gross dysfunctional disabilities resulting from loss of bones and muscles around the joint...
March 2018: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29556929/extra-articular-deformity-correction-using-taylor-spatial-frame-prior-to-total-knee-arthroplasty
#12
Gautam J K Tawari, Rajan Maheshwari, Sanjeev S Madan
A good long-term outcome following a total knee arthroplasty relies on restoration of the mechanical axis and effective soft tissue balancing of the prosthetic knee. Arthroplasty surgery in patients with secondary osteoarthritis of the knee with an extra-articular tibial deformity is a complex and challenging procedure. The correction of mal-alignment of the mechanical axis is associated with unpredictable result and with higher revision rates. Single-staged deformity correction and replacement surgery often result in the use of constraint implants...
March 20, 2018: Strategies in Trauma and Limb Reconstruction
https://www.readbyqxmd.com/read/29524329/antifungal-properties-and-biocompatibility-of-silver-nanoparticle-coatings-on-silicone-maxillofacial-prostheses-in-vitro
#13
Zhala Meran, Alexandros Besinis, Tracy De Peralta, Richard D Handy
Patients with facial prostheses suffer from yeast, Candida albicans, infections. This study aimed to determine the biocompatibility and antifungal properties of silicone facial prostheses coated with silver nanoparticles (Ag NPs) in vitro. Medical grade silicone discs were coated with 5 and 50 mg L-1 dispersions of either Ag NPs or AgNO3 . Coatings were fully characterized using scanning electron microscopy and energy dispersive X-ray spectroscopy. The biocompatibility was examined using human dermal fibroblasts (Hs68), whereas antifungal efficacy was tested against C...
April 2018: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29502234/concerns-of-anophthalmic-patients-a-comparison-between-cryolite-glass-and-polymethyl-methacrylate-prosthetic-eye-wearers
#14
Alexander C Rokohl, Konrad R Koch, Werner Adler, Marc Trester, Wolfgang Trester, Nicola S Pine, Keith R Pine, Ludwig M Heindl
PURPOSE: To compare the concerns of experienced cryolite glass and (poly)methyl methacrylate (PMMA) prosthetic eye wearers. METHODS: One hundred six experienced cryolite glass and 63 experienced PMMA prosthetic eye wearers completed an anonymous questionnaire regarding general and specific prosthetic eye concerns at least 2 years after natural eye loss. From these independent anophthalmic populations, we identified 34 case-control pairs matched for the known influencing demographic variables of gender, occupation, age, and time since natural eye loss...
June 2018: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/29470237/primary-shoulder-hemiarthroplasty-what-can-be-learned-from-359-cases-that-were-surgically-revised
#15
Daniel J Hackett, Jason E Hsu, Frederick A Matsen
BACKGROUND: Primary shoulder hemiarthroplasty is used to address a range of glenohumeral disorders, including fracture, arthritis, avascular necrosis, and capsulorrhaphy arthropathy; some patients with hemiarthroplasties undergo revision surgery for persistent pain or residual shoulder dysfunction. The literature does not clarify the features of the hemiarthroplasties having repeat surgery in a way that can guide surgeons' efforts to minimize the need for revision. To help address this gap, we analyzed the characteristics of patients from our region for whom we performed surgical revision of a prior humeral hemiarthroplasty QUESTIONS/PURPOSES: (1) What are the common characteristics of shoulder hemiarthroplasties having a revision? (2) What are the common characteristics of the subset of revised shoulder hemiarthroplasties that were performed for fracture? (3) What are characteristics of the subset of all revised hemiarthroplasties that were associated with glenoid bone erosion? METHODS: Data for 983 patients for whom we performed a surgical revision of any type of shoulder arthroplasty between January 1991 and January 2017 were identified in our longitudinally maintained institutional arthroplasty revision database...
May 2018: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/29441817/return-to-surfing-using-an-adapted-prosthesis-a-case-report
#16
Erica Schvirtz, Laurent Bensoussan, Bertrand Tourret Couderc, Jean-Michel Viton, Alain Delarque, Marjorie Kerzoncuf
BACKGROUND: Surfing with transfemoral knee prosthesis requires flexion of the hip, knee, and ankle and balance between flexibility and stiffness of the prosthetic limb. We report on Mr D, a transfemoral amputee, who wanted to surf again. Case Description and Methods: Technical specifications were based on Mr D's complaint. The prosthesis is salt water resistant and combines a shock absorber associated with elastic tendons to permit the knee to bend easily and to facilitate eccentric braking...
February 1, 2018: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/29430148/prosthetic-rehabilitation-of-a-partially-amputated-finger-using-a-customized-ring-wire-substructure
#17
Siddharth Mehta, B Leela, Abha Karanjkar, Arpit J Halani
Defects of fingers or hands due to congenital reasons or trauma can be a catastrophic setback to an individual physically, emotionally, and psychologically. An artificial finger prosthesis is a lucrative option to camouflage such defects. The anatomy of the residual stump of the defect is of extreme importance and will dictate the mode of retention to be used, and the level of esthetics one can expect. Despite the availability of the advanced skills, best of materials, and laboratory support, sometimes, the anatomy of the defect may be a hindrance in furnishing a better prosthesis...
January 2018: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29414988/laboratory-and-community-based-health-outcomes-in-people-with-transtibial-amputation-using-crossover-and-energy-storing-prosthetic-feet-a-randomized-crossover-trial
#18
RANDOMIZED CONTROLLED TRIAL
Sara J Morgan, Cody L McDonald, Elizabeth G Halsne, Sarah M Cheever, Rana Salem, Patricia A Kramer, Brian J Hafner
Contemporary prosthetic feet are generally optimized for either daily or high-level activities. Prosthesis users, therefore, often require multiple prostheses to participate in activities that span a range of mobility. Crossover feet (XF) are designed to increase the range of activities that can be performed with a single prosthesis. However, little evidence exists to guide clinical prescription of XF relative to traditional energy storing feet (ESF). The objective of this study was to assess the effects of XF and ESF on health outcomes in people with transtibial amputation...
2018: PloS One
https://www.readbyqxmd.com/read/29388671/bulleyaconitine-a-prevents-ti-particle-induced-osteolysis-via-suppressing-nf-%C3%AE%C2%BAb-signal-pathway-during-osteoclastogenesis-and-osteoblastogenesis
#19
Liwei Zhang, Mingxuan Feng, Zhiyan Li, Min Zhu, Yongyong Fan, Binxiang Chu, Chiting Yuan, Lihua Chen, Haiyan Lv, Zhenghua Hong, Dun Hong
Balanced bone resorption and bone formation are vital for bone homeostasis. Excessive osteoclastic bone resorption in this process can cause a variety of bone disorders including osteoporosis, aseptic prosthetic loosening and tumor associated bone destruction. Bulleyaconitine A (BLA) is a natural compound that has been widely used for pain treatment but its role in osteolysis has not yet been investigated. In this study, we verified for the first time that BLA inhibited osteoclast formation, the mRNA expression of osteoclast-related genes and osteoclastic bone resorption by inhibiting NF-κB signal pathway and downstream NFATc1 expression...
February 1, 2018: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29351504/a-systematic-literature-review-of-physiotherapy-and-rehabilitation-approaches-to-lower-limb-amputation
#20
Özlem Ülger, Tezel Yıldırım Şahan, Seher Erol Çelik
BACKGROUND: Successful use of prostheses after lower-limb amputation (LLA) depends on undergoing physiotherapy and rehabilitation both physically and psychologically. The aim of this systematic literature review is to systematically review the scientific evidence regarding prosthetic rehabilitation and physiotherapy after LLA. METHODS: A systematic literature search was conducted using PubMed, Web of Science, Cochrane, CINAHL, EMBASE, SCOPUS, and EMB Reviews databases on December 31, 2015...
January 19, 2018: Physiotherapy Theory and Practice
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