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https://www.readbyqxmd.com/read/28168644/minimal-effect-of-patella-eversion-on-ligament-balancing-in-cruciate-retaining-total-knee-arthroplasty
#1
Eirik Aunan, Thomas Kibsgård, Stephan M Röhrl
PURPOSE: The effect of patellar eversion on ligament laxity measurements is still unclear. The purpose of this study was to investigate the influence of patellar eversion on medial and lateral ligament laxity measurements performed intra-operatively in total knee arthroplasty (TKA). METHODS: A total of 49 knees (27 female) with mean age 70 years (42-83) and mean body mass index of 28.5 were operated consecutively with a cruciate-retaining prosthesis. Medial and lateral ligament laxity in extension and in 90° of flexion was measured with the spatula-method intra-operatively after implantation of the prosthetic components with the patella everted and thereafter with the patella repositioned...
February 7, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28088671/melatonin-attenuates-titanium-particle-induced-osteolysis-via-activation-of-wnt-%C3%AE-catenin-signaling-pathway
#2
Zichuan Ping, Xuanyang Hu, Liangliang Wang, Jiawei Shi, Yunxia Tao, Xiexing Wu, Zhenyang Hou, Xiaobin Guo, Wen Zhang, Huilin Yang, Yaozeng Xu, Zhirong Wang, Dechun Geng
: Wear debris-induced inhibition of bone regeneration and extensive bone resorption were common features in peri-prosthetic osteolysis (PPO). Here, we investigated the effect of melatonin on titanium particle-stimulated osteolysis in a murine calvariae model and mouse-mesenchymal-stem cells (mMSCs) culture system. Melatonin inhibited titanium particle-induced osteolysis and increased bone formation at osteolytic sites, confirmed by radiological and histomorphometric data. Furthermore, osteoclast numbers decreased dramatically in the low- and high-melatonin administration mice, as respectively, compared with the untreated animals...
January 11, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28067123/the-effect-of-a-supervised-community-based-exercise-program-on-balance-balance-confidence-and-gait-in-individuals-with-lower-limb-amputation
#3
Carol A Miller, Jennifer E Williams, Katey L Durham, Selena C Hom, Julie L Smith
BACKGROUND: Many individuals with lower limb loss report concern with walking ability after completing structured traditional rehabilitation. OBJECTIVES: The purpose of this study was to explore the impact of a supervised community-based exercise program on balance, balance confidence, and gait in individuals with lower limb amputation. STUDY DESIGN: Repeated measures. METHODS: The supervised exercise program was offered biweekly for 6 weeks...
January 1, 2017: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/28066525/the-effect-of-transfemoral-interface-design-on-gait-speed-and-risk-of-falls
#4
Jason T Kahle, Tyler D Klenow, William J Sampson, M Jason Highsmith
Falls and diminished walking capacity are impairments common in persons with transfemoral amputation (TFA). Reducing falls and optimizing walking capacity through such means as achieving a more normal gait speed and community ambulation should be considered when formulating the prosthetic prescription. Because walking capacity and balance confidence are compromised with TFA, these outcomes should be considered when evaluating interfaces for transfemoral prosthetic users. The purpose of this study was to compare the effect of TFA interface design on walking capacity and balance confidence A retrospective cohort design was utilized involving unilateral TFA patients who used ischial ramus containment (IRC) and High-Fidelity (HiFi) interfaces (independent variables)...
September 2016: Technology and Innovation
https://www.readbyqxmd.com/read/28061515/spacer-based-gap-balancing-in-total-knee-arthroplasty-clinical-success-with-a-reproducible-technique
#5
Frédéric Lavoie
Purpose Proper coronal and transverse ligament balancing is an important aspect of total knee arthroplasty (TKA) and has an impact on postoperative outcome. Many variations of the gap balancing technique were described to address this challenge, most of them using various tensioning devices, but none for which the use is widespread. The aim of this paper is to describe a gap technique variant for TKA using spacer blocks and report the clinical results for a cohort of patients on which it was used. Methods A total of 114 TKAs were performed in 101 patients using a standardized surgical technique that integrates ligament balancing with sizing and positioning of the femoral component...
January 6, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28055332/temperature-measurement-and-control-system-for-transtibial-prostheses-single-subject-clinical-evaluation
#6
Kamiar Ghoseiri, Yong Ping Zheng, Aaron K L Leung, Mehdi Rahgozar, Gholamreza Aminian, Mehdi Masoumi, Mohammad Reza Safari
The snug fit of a prosthetic socket over the residual limb can disturb thermal balance and put skin integrity in jeopardy by providing an unpleasant and infectious environment. The prototype of a temperature measurement and control (TM&C) system was previously introduced to resolve thermal problems related to prostheses. This study evaluates its clinical application in a setting with reversal, single subject design. The TM&C system was installed on fabricated prosthetic socket of a man with unilateral transtibial amputation...
January 5, 2017: Assistive Technology: the Official Journal of RESNA
https://www.readbyqxmd.com/read/28053386/early-clinical-and-radiological-results-of-minimally-invasive-total-hip-replacement
#7
Özgür Karakoyun, Mehmet Fatih Erol, Ahmet Aslan, Mesut Karıksız, Burak Günaydın
INTRODUCTION: It is critical to achieve both proper component positioning and intact muscle balance if satisfactory results are to be attained after total hip replacement (THR). There have been fewer studies on minimally invasive (MI) THR than standard approaches. The objective of this paper is to present the early clinical and radiological results of posterolateral MI THR. MATERIALS AND METHODS: The retrospective analysis of the records of patients undergoing posterolateral MI THR surgery between 2011 and 2014 was the basis of this study...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/27997673/functional-performance-differences-between-the-genium-and-c-leg-prosthetic-knees-and-intact-knees
#8
M Jason Highsmith, Jason T Kahle, Rebecca M Miro, M Elaine Cress, Derek J Lura, William S Quillen, Stephanie L Carey, Rajiv V Dubey, Larry J Mengelkoch
Microprocessor prosthetic knees (MPKs) have advanced technologically, offering new features to decrease impairment and activity limitations for persons with transfemoral amputation (TFA). The Genium knee is functionally untested, and functional differences between it and intact knees are unknown. This study sought to determine whether Genium use improves functional performance compared with the C-Leg. A randomized experimental crossover design was used, with a cross-section of five nonamputee controls for comparison to normal...
2016: Journal of Rehabilitation Research and Development
https://www.readbyqxmd.com/read/27909643/source-control-and-graft-preservation-using-negative-pressure-wound-therapy-with-antibiotic-instillation-a-case-report
#9
Victoria Gilbert, Timothy Kelly, Robert Grossi
Negative pressure wound therapy (NPWT) is widely used to treat many types of complex wounds, and the advent of the instillation and dwell time (NPWTi-d) technique has enhanced this system with the addition of automated treatment with topical solutions. In the field of vascular surgery, NPWT is utilized to help close wounds over underlying grafts; however keeping these wounds free of infection and avoiding large reoperation when infection occurs remains a challenge. In this case report we present a patient who required acute intervention for limb ischemia, with a large wound created in the groin for anastomosis of a prosthetic graft bypass...
October 31, 2016: Curēus
https://www.readbyqxmd.com/read/27865091/analysis-of-voluntary-opening-ottobock-hook-and-hosmer-hook-for-upper-limb-prosthetics-a-preliminary-study
#10
Nur Afiqah Hashim, Nasrul Anuar Bin Abd Razak, Hossein Gholizadeh, Noor Azuan Abu Osman
There are a number of prosthetic terminal devices which offer functional restoration to individuals with upper limb deficiencies. Hosmer and Ottobock are major commercial hook providers for prosthetic terminal devices. The concern of this paper is to analyse the voluntary opening (VO) Ottobock model 10A18 and Hosmer model 99P hooks (one band) during opening operation and to find out favourable features in the design. Two tests were conducted to analyse the performance of both hooks. The first test used a simple bench tool to investigate cable excursion and hook opening angle and the second test used force sensor to find out the force supplied at a different hook opening angle...
November 19, 2016: Biomedizinische Technik. Biomedical Engineering
https://www.readbyqxmd.com/read/27783791/prospective-comparative-study-for-the-evaluation-of-prosthetic-rehabilitation-users-with-transtibial-amputation
#11
Gabriel de Souza Prim, Francisco Assis Souza Santos, Milton Vieira, Victor Nassar
Individuals with transtibial amputations have difficulties in performing march and stay in balance, directly affecting their quality of life. The use of prostheses can enable the rehabilitation of the individual, but we question how effective are for certain tasks and how they can still improve. To evaluate the prosthesis for transtibial amputation, a comparative study was conducted with two groups: Amputee and NOT Amputees. With the help of Motion Capture technology was held measuring the angles of static balance, walking speed and scores in the execution of daily activities...
October 2016: Ciência & Saúde Coletiva
https://www.readbyqxmd.com/read/27770064/predicting-mobility-outcome-in-lower-limb-amputees-with-motor-ability-tests-used-in-early-rehabilitation
#12
Matthijs H Spaan, Aline H Vrieling, Pim van de Berg, Pieter U Dijkstra, Helco G van Keeken
STUDY DESIGN: Retrospective cohort study. BACKGROUND: Persons with a lower limb amputation can regain mobility using a prosthetic device. For fast and adequate prescription of prosthetic components, it is necessary to predict the mobility outcome early in rehabilitation. Currently, prosthetic prescription is primarily based on empirical knowledge of rehabilitation professionals. OBJECTIVE: In this study, we explored motor ability tests, to be completed without a prosthetic device, which have predictive value for mobility outcome at the end of rehabilitation...
October 20, 2016: Prosthetics and Orthotics International
https://www.readbyqxmd.com/read/27756174/association-of-self-reported-cognitive-concerns-with-mobility-in-people-with-lower-limb-loss
#13
Valerie E Kelly, Sara J Morgan, Dagmar Amtmann, Rana Salem, Brian J Hafner
PURPOSE: This study tested the hypothesis that greater perceived cognitive concerns are associated with worse mobility in a cohort of prosthesis users with lower limb loss (LLL). METHOD: We performed a secondary analysis of cross-sectional self-report data from a volunteer sample of people with LLL due to dysvascular and non-dysvacular causes. Perceived cognitive difficulties were assessed using the Quality of Life in Neurological Disorders Applied Cognition - General Concerns (Neuro-QoL ACGC)...
October 19, 2016: Disability and Rehabilitation
https://www.readbyqxmd.com/read/27747645/a-piezo-surgery-with-corticotomies-and-implant-placement-as-part-of-a-multidisciplinary-approach-to-treat-malocclusion-disorder-in-an-adult-patient-clinical-report
#14
Federico Gelpi, Daniele De Santis, Simone Marconcini, Francesco Briguglio, Marco Finotti
This clinical report illustrates a multidisciplinary approach for the rehabilitation of a young adult patient affected by a bilateral edentulous space and an anterior deep bite. The patient required orthodontics and surgical corticotomy and implantology (both performed with a piezo device). A multidisciplinary planning approach, including orthodontics, oral and periodontic surgery, and restorative dentistry, has an important role in the final outcome of treatment. In fact a dental class I occlusion has been established only on the right side...
December 2015: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/27676888/fitting-with-an-electronic-knee-for-a-schizophrenic-patient-with-bilateral-amputation-of-lower-limbs-what-s-the-point
#15
Thibaut Mirlicourtois, Tche Hong Loquineau, Pierre Yves Chagnon, Thomas Rondepierre, Serge Mirlicourtois, Jean Christophe Bonnardel
OBJECTIVE: The replacement of a mechanical knee with prosthetic class I foot fitting by an electronic knee with prosthetic class II foot was proposed to a 54-years-old schizophrenic patient, active, with right femoral and left tibial traumatic amputation. This fitting evolution was assessed both quantitatively and qualitatively. OBSERVATIONS/METHOD: Compared evaluation of electronic knee with prosthetic class II foot versus mechanical polycentric knee with prosthetic class I foot (fitting unchanged moreover) in: - functional abilities and quality of life using standardized scores (Functional Ambulation Classification, Houghton, Functional Independence Measurement, B...
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
#16
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/27624355/impact-of-prosthesis-patient-mismatch-on-early-haemodynamic-status-after-aortic-valve-replacement
#17
Michel Kindo, Tam Hoang Minh, Stéphanie Perrier, Hélène Petit-Eisenmann, Jonathan Bentz, Mircea Cristinar, Gharib Ajob, Olivier Collange, Jean-Philippe Mazzucotelli
OBJECTIVES: Prosthesis-patient mismatch (PPM) has been reported to impact early haemodynamic status and early mortality after prosthetic aortic valve replacement (AVR) in patients with aortic stenosis (AS). The aim of this study was to assess the impact of PMM on early haemodynamic status after AVR using vasoactive-inotropic dependency index (VDI), postoperative pressures and end-organ perfusion. METHODS: A total of 183 patients with AS were included in this prospective cohort study, and underwent elective AVR with or without combined coronary artery bypass graft surgery...
January 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27590443/construct-validity-of-the-prosthetic-limb-users-survey-of-mobility-plus-m-in-adults-with-lower-limb-amputation
#18
Brian J Hafner, Ignacio A Gaunaurd, Sara J Morgan, Dagmar Amtmann, Rana Salem, Robert S Gailey
OBJECTIVE: To assess construct validity of the Prosthetic Limb Users Survey of Mobility (PLUS-M), a self-report mobility measure for people with lower limb amputation (LLA). DESIGN: Cross-sectional study. SETTING: Private prosthetic clinics (n=37). PARTICIPANTS: Current lower limb prosthesis users (N=199; mean age ± SD, 55.4±14.3y; 71.4% men) were assessed before receiving a replacement prosthesis, prosthetic socket, and/or prosthetic knee...
February 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/27589658/sound-production-in-totally-edentulous-patients-before-and-after-prosthetic-treatment
#19
Elena A Bulycheva, Vladimir N Trezubov, Ulia V Alpateva, Darya S Bulycheva
PURPOSE: To study sound pronunciation in patients with total edentulism before and after prosthodontic treatment using complete removable dentures. MATERIALS AND METHODS: Recordings of phonetically balanced phrases were made using a headset connected to a dictaphone to assess specific pronunciation defects in patients with total edentulism before and after prosthodontic treatment. The obtained sets of sounds were investigated using spectral analysis by calculating the average power spectra...
September 2, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27565814/cystathionine-%C3%AE-synthase-and-pgrmc1-as-co-sensors
#20
Yasuaki Kabe, Takehiro Yamamoto, Mayumi Kajimura, Yuki Sugiura, Ikko Koike, Mitsuyo Ohmura, Takashi Nakamura, Yasuhito Tokumoto, Hitoshi Tsugawa, Hiroshi Handa, Takuya Kobayashi, Makoto Suematsu
Heme oxygenase (HO) is a mono-oxygenase utilizing heme and molecular oxygen (O2) as substrates to generate biliverdin-IXα and carbon monoxide (CO). HO-1 is inducible under stress conditions, while HO-2 is constitutive. A balance between heme and CO was shown to regulate cell death and survival in many experimental models. However, direct molecular targets to which CO binds to regulate cellular functions remained to be fully examined. We have revealed novel roles of CO-responsive proteins, cystathionine β-synthase (CBS) and progesterone receptor membrane component 1 (PGRMC1), in regulating cellular functions...
August 24, 2016: Free Radical Biology & Medicine
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