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https://www.readbyqxmd.com/read/28217660/reverse-total-shoulder-arthroplasty-research-models
#1
Stefano Petrillo, Umile Giuseppe Longo, Lawrence V Gulotta, Alessandra Berton, Andreas Kontaxis, Timothy Wright, Vincenzo Denaro
PURPOSE: the past decade has seen a considerable increase in the use of research models to study reverse total shoulder arthroplasty (RTSA). Nevertheless, none of these models has been shown to completely reflect real in vivo conditions. METHODS: we performed a systematic review of the literature matching the following key words: "reverse total shoulder arthroplasty" or "reverse total shoulder replacement" or "reverse total shoulder prosthesis" and "research models" or "biomechanical models" or "physical simulators" or "virtual simulators"...
October 2016: Joints
https://www.readbyqxmd.com/read/28216311/meniscal-extrusion-and-bone-marrow-lesions-are-associated-with-incident-and-progressive-knee-osteoarthritis
#2
Andrew J Teichtahl, Flavia M Cicuttini, François Abram, Yuanyuan Wang, Jean-Pierre Pelletier, Pierre Dodin, Johanne Martel-Pelletier
OBJECTIVE: Whether meniscal extrusion and bone marrow lesions (BMLs) are independently associated with the risk of knee osteoarthritis (OA) is unknown. METHODS: Data was extracted from the Osteoarthritis Initiative (OAI) cohort. Participants were grouped according to the absence (Kellgren-Lawrence (KL) grade ≤ 1, n = 2120) or presence (KL ≥ 2, n = 2249) of ROA. Baseline meniscal extrusion and tibial BMLs were assessed. Tibial plateau cartilage volume was assessed at baseline and 72 months, while radiographic disease was assessed at baseline and 48 months...
February 12, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28213286/investigation-of-silicon-carbon-nitride-nanocomposite-films-as-a-wear-resistant-layer-in-vitro-and-in-vivo-for-joint-replacement-applications
#3
Y Liang, D G Liu, W Q Bai, J P Tu
Silicon-contained CNx nanocomposite films were prepared using the ion beam assisted magnetron sputtering under different nitrogen gas pressure. With increase of the nitrogen pressure, silicon and nitrogen content of the CNx films drastically increase, and is saturated as the PN2 reach about 40%. Surface roughness and the contact angle are increase, while the friction coefficient decreased. The CNx film with 5.7at.% Si content possess the lowest friction coefficient of only 0.07, and exhibited the best tribological properties...
February 10, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28212975/budget-impact-analysis-of-prolonged-half-life-recombinant-fviii-therapy-for-hemophilia-in-the-united-states
#4
Suzanne McMullen, Brieana Buckley, Eric Hall, Jon Kendter, Karissa Johnston
BACKGROUND: Hemophilia A is a factor VIII deficiency, associated with spontaneous, recurrent bleeding episodes. This may lead to comorbidities such as arthropathy and joint replacement, which contribute to morbidity and increased health care expenditure. Recombinant factor VIII Fc fusion protein (rFVIIIFc), a prolonged half-life factor therapy, requires fewer infusions, resulting in reduced treatment burden. OBJECTIVE: Use a budget impact analysis to assess the potential economic impact of introducing rFVIIIFc to a formulary from the perspective of a private payer in the United States...
January 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28210410/a-case-of-glenoid-fossa-fracture-progressive-ankylosis-total-joint-reconstruction-with-alloplastic-prosthesis-to-normalized-function-including-evaluation-with-f18-pet-ct-a-four-year-follow-up
#5
Björn Lindell, Andreas Thor
Temporomandibular joint replacement (TJR) with alloplastic prosthesis has shown promising long-term results in end stage joint disorders. We present a case of young woman with painful ankylosis that where reconstructed with TJR, due to a complex mandibular fracture with dislocation of the left condyle into the middle cranial fossa two years earlier. At the age of 18 the subject underwent a total joint replacement with custom-made alloplastic TMJ prosthesis. To determine the bone response and remodeling activity around the prosthesis, a F18 PET/CT-scan was used...
March 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28209371/the-effect-of-patient-age-at-intervention-on-risk-of-implant-revision-after-total-replacement-of-the-hip-or-knee-a-population-based-cohort-study
#6
Lee E Bayliss, David Culliford, A Paul Monk, Sion Glyn-Jones, Daniel Prieto-Alhambra, Andrew Judge, Cyrus Cooper, Andrew J Carr, Nigel K Arden, David J Beard, Andrew J Price
BACKGROUND: Total joint replacements for end-stage osteoarthritis of the hip and knee are cost-effective and demonstrate significant clinical improvement. However, robust population based lifetime-risk data for implant revision are not available to aid patient decision making, which is a particular problem in young patient groups deciding on best-timing for surgery. METHODS: We did implant survival analysis on all patients within the Clinical Practice Research Datalink who had undergone total hip replacement or total knee replacement...
February 13, 2017: Lancet
https://www.readbyqxmd.com/read/28203596/intra-articular-implantation-of-mesenchymal-stem-cells-part-2-a-review-of-the-literature-for-meniscal-regeneration
#7
Matthew J Kraeutler, Justin J Mitchell, Jorge Chahla, Eric C McCarty, Cecilia Pascual-Garrido
Knee osteoarthritis (OA) after partial or total meniscectomy is a prevalent issue that patients must face. Various methods of replacing meniscal tissue have been studied to avoid this progression, including meniscal allograft transplantation, meniscal scaffolds, and synthetic meniscus replacement. Studies have shown that meniscal scaffolds may improve symptoms but have not been shown to prevent progression of OA. Recently, mesenchymal stem cells (MSCs) have been proposed as a possible biological therapy for meniscal regeneration...
January 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28199931/a-personalized-3d-printed-prosthetic-joint-replacement-for-the-human-temporomandibular-joint-from-implant-design-to-implantation
#8
David C Ackland, Dale Robinson, Michael Redhead, Peter Vee Sin Lee, Adrian Moskaljuk, George Dimitroulis
Personalized prosthetic joint replacements have important applications in cases of complex bone and joint conditions where the shape and size of off-the-shelf components may not be adequate. The objective of this study was to design, test and fabricate a personalized 3D-printed prosthesis for a patient requiring total joint replacement surgery of the temporomandibular joint (TMJ). The new 'Melbourne' prosthetic TMJ design featured a condylar component sized specifically to the patient and fixation screw positions that avoid potential intra-operative damage to the mandibular nerve...
February 6, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28198781/biomechanical-analysis-of-two-level-cervical-disc-replacement-with-a-stand-alone-u-shaped-disc-implant
#9
Yang Li, Guy R Fogel, Zhenhua Liao, Rajnesh Tyagi, Gaolong Zhang, Weiqiang Liu
STUDY DESIGN: Biomechanical study using a three-dimensional nonlinear finite element (FE) model. OBJECTIVE: To analyze biomechanical changes with three prostheses based on two-level arthroplasty and to verify the biomechanical efficiency of dynamic cervical implants (DCIs) with a stand-alone U-shaped structure. SUMMARY OF BACKGROUND DATA: Few studies have compared biomechanical behavior of various prostheses as they relate to clinical results after two-level total disc replacement (TDR)...
February 14, 2017: Spine
https://www.readbyqxmd.com/read/28197692/feasibility-of-establishing-an-australian-acl-registry-a-pilot-study-by-the-australian-orthopaedic-association-national-joint-replacement-registry-aoanjrr
#10
Christina Lekkas, Richard Clarnette, Stephen E Graves, Sophia Rainbird, David Parker, Michelle Lorimer, Roger Paterson, Justin Roe, Hayden Morris, Julian A Feller, Peter Annear, Ben Forster, David Hayes
PURPOSE: Rupture of the anterior cruciate ligament (ACL) is a common and debilitating injury that impacts significantly on knee function and risks the development of degenerative arthritis. The outcome of ACL surgery is not monitored in Australia. The optimal treatment is unknown. Consequently, the identification of best practice in treating ACL is crucial to the development of improved outcomes. The Australian Knee Society (AKS) asked the Australian Orthopaedic Association (AOA) to consider establishing a national ACL registry...
February 14, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28196778/mucopolysaccharidoses-seen-in-adults-in-rheumatology
#11
Stéphane Mitrovic, Hélène Gouze, Laure Gossec, Thierry Schaeverbeke, Bruno Fautrel
Mucopolysaccharidoses are a group of rare lysosomal storage diseases including a great number of polymorph syndromes, each being related to a particular mutation responsible for a deficiency of glycosaminoglycan degrading enzymes, leading to an accumulation of glycosaminoglycans in tissues. Many of them are diagnosed in children or teenagers and have a severe prognosis because of organ failure, and are consequently usually not seen by the adult rheumatologist. However, some of them have a more progressive presentation, with musculoskeletal symptoms at the forefront and a lifespan that nearly reaches that of the general population...
February 11, 2017: Joint, Bone, Spine: Revue du Rhumatisme
https://www.readbyqxmd.com/read/28196445/chrome-nitride-coating-reduces-wear-of-small-spherical-crcomo-metal-on-metal-articulations-in-a-joint-simulator
#12
R Thorkildsen, O Reigstad, M Røkkum
Metal-on-metal articulations have fallen out of favour in larger joint replacements, but are still used in smaller joints. Coating the articulation has been suggested as one way of reducing wear. We compared a standard 6 mm CrCoMo articulation designed for the carpometacarpal joint of the thumb with a chromium nitride-coated version after 512,000 cycles in a joint simulator. A total of 6 articulations in each group were tested with a unidirectional load of 5 kg in Ringer's solution. We found a statistically significant reduction in weight loss, amount of metallic wear produced and volumetric wear for the chromium nitride-coated articulation...
March 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28196431/distal-radio-ulnar-implant-arthroplasty-a-systematic-review
#13
L S Moulton, G E B Giddins
: The use of implant arthroplasty in the hand and wrist is increasing, often with little evidence of outcomes in the literature. We therefore undertook a systematic review of the outcomes of distal radio-ulnar joint arthroplasties following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. Papers were assessed for outcomes, implant survival and methodological quality. Fourteen papers assessed ulna head replacements. The implant survival rate was 93% at a mean follow-up of 45 months...
February 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28196392/patellofemoral-osteochondral-allografts-can-we-improve-the-matching-process
#14
Jason R Determann, James E Fleischli, Donald F D'Alessandro, Dana P Piasecki
An important consideration for the successful use of fresh osteochondral allografts for the patellofemoral joint is selection of appropriately sized donor allografts. This is particularly challenging for matching grafts to the patella because of the substantial variability in articular contour that exists. At present, selection of donor patellae is based only on the width of the proximal tibia, with no established means of quantifying basic patellar size, facet configuration, or articular contour. We hypothesized that using a combination of standard radiographic measurements to generate an accurate profile of the recipients native patella would result in a more accurate donor graft...
February 14, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28196044/is-oxinium-losing-its-luster-commentary-on-an-article-by-christopher-j-vertullo-mbbs-fracs-orth-faortha-et-al-twelve-year-outcomes-of-an-oxinium-total-knee-replacement-compared-with-the-same-cobalt-chromium-design-an-analysis-of-17-577-prostheses-from-the-australian
#15
https://www.readbyqxmd.com/read/28196043/measures-of-the-appropriateness-of-elective-orthopaedic-joint-and-spine-procedures
#16
Jeffrey N Katz, Amelia R Winter, Gillian Hawker
Total knee arthroplasty and total hip arthroplasty are 2 of the most commonly performed elective orthopaedic procedures. They are remarkably successful in relieving pain and improving function in individuals with advanced, symptomatic arthritis. Since, in addition to providing benefits, these procedures pose risks, it is important to provide clinicians with guidance in determining which patients should undergo total joint replacement surgery. The development of the RAND approach in 1986 and its application to total hip and knee replacement have enabled clinicians, payers, and others to assess the appropriateness of past and current procedures for particular patients...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28196029/twelve-year-outcomes-of-an-oxinium-total-knee-replacement-compared-with-the-same-cobalt-chromium-design-an-analysis-of-17-577-prostheses-from-the-australian-orthopaedic-association-national-joint-replacement-registry
#17
Christopher J Vertullo, Peter L Lewis, Stephen Graves, Lan Kelly, Michelle Lorimer, Peter Myers
BACKGROUND: Oxidized zirconium (Oxinium) was introduced as an alternative bearing surface to cobalt-chromium (CoCr) in an attempt to reduce polyethylene wear and decrease aseptic mechanical failure of total knee replacements. While noncomparative reports have been described as promising, we were aware of no short or long-term clinical studies showing the superiority of Oxinium on polyethylene as a bearing surface. Using data from a comprehensive national joint replacement registry, we compared the long-term outcomes after cruciate-retaining total knee arthroplasty (TKA) with an Oxinium femoral component and those with the same prosthetic design but with a CoCr femoral component...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28193498/a-prospective-cohort-study-examining-medical-and-social-factors-associated-with-engagement-in-life-activities-following-total-hip-replacement
#18
Crystal MacKay, Fiona Webster, Viji Venkataramanan, Jessica Bytautas, Anthony V Perruccio, Rosalind Wong, Lisa Carlesso, Aileen M Davis
OBJECTIVES: Studies show limited improvement in the frequency of engaging in life activities after joint replacement. However, there is a paucity of research that has examined factors, including other life events, which influence engagement following total hip replacement (THR). This research sought to identify factors associated with engaging in life activities following THR. METHODS: A prospective cohort study was conducted with 376 people who had a THR for osteoarthritis...
February 10, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28190569/analyzing-on-the-location-of-the-bicipital-groove-for-alignment-in-shoulder-arthroplasty-of-chinese
#19
Jian Zhou, Linlin Zhang, Ling Shen, Ming Zhu, Feng Zheng
BACKGROUND: Many anthropometric studies of the normal glenohumeral relationship have been performed for the implant design and to identify reference points for the correct placement of the prosthesis in glenohumeral joint replacement. However, whether those implantation marks, which adopted from European or American, can achieve the same precision to Eastern Asian, specifically Chinese is still unknown. MATERIALS AND METHODS: One hundred eighty healthy were scanned using CT...
February 9, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28190568/predictable-factors-of-deep-venous-thrombosis-in-patients-undergoing-spine-surgery
#20
Terumasa Ikeda, Hiroshi Miyamoto, Kazuki Hashimoto, Masao Akagi
BACKGROUND: DVT is one of the major postoperative complications of joint replacement surgery of the lower extremity which can cause catastrophic complications such as pulmonary embolism. However, little is known about the incidence of DVT after spine surgery. The purpose of this study was to examine predictable factors of DVT after spine surgery. METHODS: This study included 194 patients who underwent spine surgery (104 males, 90 females, mean age 65.7 years). Postoperative DVT was detected using duplex ultrasonography (DUS)...
February 9, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
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