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https://www.readbyqxmd.com/read/28340364/cervical-facet-force-analysis-after-disc-replacement-versus-fusion
#1
Vikas V Patel, Zachary R Wuthrich, Kirk C McGilvray, Matthew C Lafleur, Emily M Lindley, Derrick Sun, Christian M Puttlitz
BACKGROUND: Cervical total disc replacement was developed to preserve motion and reduce adjacent-level degeneration relative to fusion, yet concerns remain that total disc replacement will lead to altered facet joint loading and long-term facet joint arthrosis. This study is intended to evaluate changes in facet contact force, pressure and surface area at the treated and superior adjacent levels before and after discectomy, disc replacement, and fusion. METHODS: Ten fresh-frozen human cadaveric cervical spines were potted from C2 to C7 with pressure sensors placed into the facet joints of C3-C4 and C4-C5 via slits in the facet capsules...
March 18, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28332780/differentiation-of-patented-crystalline-glucosamine-sulfate-from-other-glucosamine-preparations-will-optimize-osteoarthritis-treatment
#2
REVIEW
Sukit Saengnipanthkul, Saranatra Waikakul, Sattaya Rojanasthien, Kitti Totemchokchyakarn, Attarit Srinkapaibulaya, Tai Cheh Chin, Nguyen Mai Hong, Olivier Bruyère, Cyrus Cooper, Jean-Yves Reginster, Myat Lwin
Symptomatic slow-acting drugs for osteoarthritis (SYSADOAs) are recommended for the medium- to long-term management of knee osteoarthritis (OA) due to their abilities to control pain, improve function and delay joint structural changes. Among SYSADOAs, evidence is greatest for the patented crystalline glucosamine sulfate (pCGS) formulation (Mylan). Glucosamine is widely available as glucosamine sulfate (GS) and glucosamine hydrochloride (GH) preparations that vary substantially in molecular form, pharmaceutical formulation and dose regimen...
March 23, 2017: International Journal of Rheumatic Diseases
https://www.readbyqxmd.com/read/28332445/dynamic-virtual-simulation-of-the-occurrence-and-severity-of-edge-loading-in-hip-replacements-associated-with-variation-in-the-rotational-and-translational-surgical-position
#3
Joanna Leng, Mazen Al-Hajjar, Ruth Wilcox, Alison Jones, David Barton, John Fisher
Variation in the surgical positioning of total hip replacement can result in edge loading of the femoral head on the rim of the acetabular cup. Previous work has reported the effect of edge loading on the wear of hip replacement bearings with a fixed level of dynamic biomechanical hip separation. Variations in both rotational and translational surgical positioning of the hip joint replacement combine to influence both the biomechanics and the tribology including the severity of edge loading, the amount of dynamic separation, the force acting on the rim of the cup and the resultant wear and torque acting on the cup...
April 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28330577/-custom-made-implant-for-complex-facial-reconstruction-a-case-of-total-replacement-of-temporo-mandibular-joint-zygomatic-arch-and-malar-bone
#4
D Guillier, V Moris, L-A See, M Girodon, B-L Wajszczak, N Zwetyenga
INTRODUCTION: Total prosthetic replacement of the temporo-mandibular joint (TMJ) has become a common procedure, but it is usually limited to the TMJ itself. We report about one case of complex prosthetic joint reconstruction extending to the neighbouring bony structures. CASE: A 57-year-old patient, operated several times for a cranio-facial fibrous dysplasia, presented with a recurring TMJ ankylosis and a complexe latero-facial bone loss on the right side. We performed a reconstruction procedure including the TMJ, the zygomatic arch and the malar bone by mean of custom made composite prosthesis (chrome-cobalt-molybdenum-titanium and polyethylene)...
February 2017: J Stomatol Oral Maxillofac Surg
https://www.readbyqxmd.com/read/28330380/rehabilitation-after-total-joint-replacement-a-scoping-study
#5
Deborah L Snell, Julia Hipango, K Anne Sinnott, Jennifer A Dunn, Alastair Rothwell, C Jean Hsieh, Gerben DeJong, Gary Hooper
PURPOSE: The evidence supporting rehabilitation after joint replacement, while vast, is of variable quality making it difficult for clinicians to apply the best evidence to their practice. We aimed to map key issues for rehabilitation following joint replacement, highlighting potential avenues for new research. MATERIALS AND METHODS: We conducted a scoping study including research published between January 2013 and December 2016, evaluating effectiveness of rehabilitation following hip and knee total joint replacement...
March 23, 2017: Disability and Rehabilitation
https://www.readbyqxmd.com/read/28328832/clinico-radiological-diagnosis-and-grading-of-rapidly-progressive-osteoarthritis-of-the-hip
#6
Ancuţa Zazgyva, Simona Gurzu, István Gergely, Ioan Jung, Ciprian O Roman, Tudor S Pop
Due to the current lack of standard definitions for rapidly progressive osteoarthritis of the hip (RPOH) in the literature, this observational study aimed to describe new diagnostic criteria and a grading system for the disease.From a consecutive series of patients undergoing total hip replacement, 2 groups were selected: 1 with RPOH and 1 with primary hip osteoarthritis (POH), and their clinical, paraclinical, and demographic data were compared. The newly proposed clinico-radiological diagnostic criteria are based on characteristics of pain, joint mobility, and radiological assessment...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28326404/comparing-contemporary-revision-burden-among-hip-and-knee-joint-replacement-registries
#7
Brian J McGrory, Caryn D Etkin, David G Lewallen
BACKGROUND: Hip and knee arthroplasties are common and successful procedures, however, success and durability are not guaranteed. The revision burden, defined as the ratio of implant revisions to the total number of arthroplasties in a specific period, is a measure of the steady state of arthroplasty success in a given registry. This study examines the hypothesis that revision burden would be similar among contemporary joint replacement registries and improving over time compared with historic controls...
June 2016: Arthroplasty Today
https://www.readbyqxmd.com/read/28325423/stage%C3%A2-iv-kienb%C3%A3-ck-s-disease-proximal-row-carpectomy-and-application-of-rcpi-implant
#8
A Marcuzzi, F Colantonio, G Petrella, H Ozben, A Russomando
Kienböck disease is an aseptic osteonecrosis of the lunate, which gradually leads to total carpal collapse. Lichtman's classification relates radiographic evidence of wrist damage to four different stages and supports surgical decision-making. This study pertains to six patients (2 males and 4 females) affected by stage IV Kienböck's disease who underwent proximal row carpectomy and received an RCPI implant. The clinical outcomes consisted of wrist range of motion (ROM), pain on a VAS scale (0-10), the DASH score and the patient's level of satisfaction...
April 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28320058/regional-differences-between-perisynovial-and-infrapatellar-adipose-tissue-depots-and-their-response-to-class-ii-and-iii-obesity-in-patients-with-oa
#9
Natalia S Harasymowicz, Nick D Clement, Asim Azfer, Richard Burnett, Donald M Salter, A Hamish W R Simpson
OBJECTIVE: Obesity is associated with an increased risk of developing Osteoarthritis (OA), which is postulated to be secondary to inflammation from adipose tissue (AT). There are peri-articular adipose depots in synovial joints, the association of this tissue with OA has not been extensively explored. The aim of this study was to investigate differences in local AT depots in knees with OA and changes related to class II and III obesity. METHODS: Synovium and the infrapatellar fat pad (IPFP) were collected during total knee replacement from 69 patients with end-stage OA...
March 20, 2017: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/28316350/peek-and-cfr-peek-as-alternative-bearing-materials-to-uhmwpe-in-a-fixed-bearing-total-knee-replacement-an-experimental-wear-study
#10
Claire L Brockett, Silvia Carbone, John Fisher, Louise M Jennings
New bearing materials for total joint replacement have been explored as the need to improve longevity and enhance performance is driven by the changing demands of the patient demographic. Carbon-reinforced PEEK has demonstrated good wear characteristics in experimental wear simulation in both simple geometry pin-on-plate studies and in total hip joint replacement. Carbon reinforced PEEK CFR-PEEK has the potential to reduce tibial insert thickness and preserve bone in the knee. This study investigated the wear performance of PEEK and CFR-PEEK in a low conformity total knee replacement configuration...
March 15, 2017: Wear: An International Journal on the Science and Technology of Friction Lubrication and Wear
https://www.readbyqxmd.com/read/28316309/high-resolution-ct-angiogram-for-lower-extremity-vein-mapping
#11
Mark P Wright, Matthew R Smeds, Lonnie Wright, Ahsan T Ali
High-resolution CT angiogram (CTA) has replaced traditional diagnostic angiography as the main preoperative imaging modality for vascular surgery patients. Although the use of CTA is increasing for arterial imaging, it has not been used routinely for vein mapping. The goal of this study was to evaluate the accuracy of CTA for venous anatomy and compare it to a standard venous duplex ultrasound (DUS). When the vein was used for bypass, the quality and size of the vein were evaluated in the operating room. As part of a preoperative workup before lower extremity revascularization, 16 patients underwent a CTA followed by a DUS...
March 1, 2017: American Surgeon
https://www.readbyqxmd.com/read/28302461/data-quality-in-institutional-arthroplasty-registries-description-of-a-model-of-validation-and-report-of-preliminary-results
#12
Maria P Bautista, Guillermo A Bonilla, Klaus W Mieth, Adolfo M Llinás, Fernanda Rodríguez, Laura L Cárdenas
BACKGROUND: Arthroplasty registries are a relevant source of information for research and quality improvement in patient care and its value depends on the quality of the recorded data. The purpose of this study is to describe a model of validation and present the findings of validation of an Institutional Arthroplasty Registry (IAR). METHODS: Information from 209 primary arthroplasties and revision surgeries of the hip, knee, and shoulder recorded in the IAR between March and September 2015 were analyzed in the following domains...
February 20, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28302132/long-term-results-and-comparison-of-the-three-different-high-tibial-osteotomy-and-fixation-techniques-in-medial-compartment-arthrosis
#13
Gökhan Polat, Halil İbrahim Balcı, Mehmet Fevzi Çakmak, Mehmet Demirel, Cengiz Şen, Mehmet Aşık
BACKGROUND: The purpose of this study is to report and analyze the long-term outcomes of the patients who underwent high tibial osteotomy (HTO) with three different techniques for the treatment of medial compartment arthrosis. METHODS: A total of 187 patients (195 knees) who underwent HTO between 1990 and 2010 were retrospectively evaluated. Eighty-eight knees, opening-wedge osteotomy with Puddu plate (group A); 51 knees, transverse osteotomy below the tubercle with external fixator (group B); and 29 knees, closing-wedge osteotomy with staple fixation (group C) were included in the study...
March 16, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28298375/knee-and-hip-intra-articular-adipose-tissues-iaats-compared-with-autologous-subcutaneous-adipose-tissue-a-specific-phenotype-for-a-central-player-in-osteoarthritis
#14
Florent Eymard, Audrey Pigenet, Danièle Citadelle, Joan Tordjman, Louise Foucher, Cindy Rose, Charles-Henri Flouzat Lachaniette, Christine Rouault, Karine Clément, Francis Berenbaum, Xavier Chevalier, Xavier Houard
OBJECTIVES: Compared with subcutaneous adipose tissue (SCAT), infrapatellar fat pad (IFP), the main knee intra-articular adipose tissue (IAAT), has an inflammatory phenotype in patients with osteoarthritis (OA). We phenotyped suprapatellar fat pad (SPFP) and hip acetabular fat pad (AFP), two other IAATs, to determinate the unique signature of IAATs compared with SCAT. METHODS: IFP, SPFP, AFP and autologous SCAT were obtained from patients with OA during total knee (n=38) or hip replacement (n=5)...
March 15, 2017: Annals of the Rheumatic Diseases
https://www.readbyqxmd.com/read/28298194/patient-endorsement-of-the-outcome-measures-in-rheumatology-omeract-total-joint-replacement-tjr-clinical-trial-draft-core-domain-set
#15
Jasvinder A Singh, Michelle Dowsey, Peter F Choong
BACKGROUND: A patient- and surgeon-Delphi-derived Outcome Measures in Rheumatology (OMERACT) draft core domain set for total joint arthroplasty (TJR) trials was recently developed. Our objective was to obtain further patient stakeholder endorsement of draft core domain set for TJR clinical trials. METHODS: We surveyed two patient groups: (1) OMERACT patient partners; and (2) patients who had undergone hip or knee TJR. Patients received an introductory email with explanations about the core domain set and instructions to rate the core domains, i...
March 15, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28283810/anesthetic-and-analgesic-management-for-outpatient-knee-arthroplasty
#16
REVIEW
Chris Cullom, Jonathan T Weed
PURPOSE OF REVIEW: Total knee arthroplasty traditionally has been associated with significant postoperative pain that can limit recovery and prolong hospital length of stay. Recently, however, due to financial pressures and an emphasis on improving patient satisfaction, many institutions are implementing outpatient and short-stay programs for patients undergoing this procedure. An effective perioperative anesthetic plan is an essential quality of a successful outpatient joint replacement program...
May 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28280641/prosthetic-joint-infection-due-to-mycobacterium-avium-intracellulare-in-a-patient-with-rheumatoid-arthritis-a-case-report-and-review-of-the-literature
#17
Nicholas E Ingraham, Brenton Schneider, Jonathan D Alpern
Nontuberculous mycobacteria (NTM) are a rare cause of prosthetic joint infections (PJI). However, the prevalence of NTM infections may be increasing with the rise of newer immunosuppressive medications such as biologics. In this case report, we describe a rare complication of immunosuppressive therapies and highlight the complexity of diagnosing and treating PJI due to NTM. The patient is a 79-year-old Caucasian male with a history of severe destructive rheumatoid arthritis on several immunosuppressive agents and right hip osteoarthritis s/p total hip arthroplasty 15 years previously with several complex revisions, presenting with several weeks of worsening right hip and abdominal pain...
2017: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/28278383/3d-printed-poly-%C3%AE%C2%B5-caprolactone-scaffold-augmented-with-mesenchymal-stem-cells-for-total-meniscal-substitution
#18
Zheng-Zheng Zhang, Shao-Jie Wang, Ji-Ying Zhang, Wen-Bo Jiang, Ai-Bing Huang, Yan-Song Qi, Jian-Xun Ding, Xue-Si Chen, Dong Jiang, Jia-Kuo Yu
BACKGROUND: Total meniscectomy leads to knee osteoarthritis in the long term. The poly(ε-caprolactone) (PCL) scaffold is a promising material for meniscal tissue regeneration, but cell-free scaffolds result in relatively poor tissue regeneration and lead to joint degeneration. HYPOTHESIS: A novel, 3-dimensional (3D)-printed PCL scaffold augmented with mesenchymal stem cells (MSCs) would offer benefits in meniscal regeneration and cartilage protection. STUDY DESIGN: Controlled laboratory study...
March 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28276651/realignment-surgery-for-malunited-ankle-fracture
#19
Chang-Jun Guo, Xing-Cheng Li, Mu Hu, Yang Xu, Xiang-Yang Xu
OBJECTIVE: To investigate the characteristics and the results of realignment surgery for the treatment of malunited ankle fracture. METHODS: Thirty-three patients with malunited fractures of the ankle who underwent reconstructive surgery at our hospital from January 2010 to January 2014 were reviewed. The tibial anterior surface angle (TAS), the tibiotalar tilt angle (TTA), the malleolar angle (MA), and the tibial lateral surface angle (TLS) were measured. Clinical assessment was performed with use of the American Orthopaedic Foot and Ankle Society (AOFAS) scale and visual analogue scale (VAS) scores, and the osteoarthritis stage was determined radiographically with the modified Takakura classification system...
March 9, 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28272182/use-of-a-dog-visitation-program-to-improve-patient-satisfaction-in-trauma-patients
#20
Penelope Stevens, John P Kepros, Benjamin D Mosher
Clinical staff members all recognize the importance of attaining high patient satisfaction scores. Although there are many variables that contribute to patient satisfaction, implementation of a dog visitation program has been shown to have positive effects on patient satisfaction in total joint replacement patients. This innovative practice had not previously been studied in trauma patients. The purpose of this quasi-experimental study was to determine whether dog visitation to trauma inpatients increased patient satisfaction scores with the trauma physicians...
March 2017: Journal of Trauma Nursing: the Official Journal of the Society of Trauma Nurses
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