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Prosthetic joint

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https://www.readbyqxmd.com/read/28199931/a-personalized-3d-printed-prosthetic-joint-replacement-for-the-human-temporomandibular-joint-from-implant-design-to-implantation
#1
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/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
#2
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/28195985/prosthetic-joint-infections-in-patients-undergoing-carpal-tunnel-release
#3
Wenjing Zeng, Deborah Paul, Thomas Kemp, John Elfar
INTRODUCTION: Little information is available regarding the rate of prosthetic joint infections (PJIs) in patients undergoing carpal tunnel release (CTR) without antibiotic prophylaxis. Hand surgeons should be aware of patients' history of arthroplasty. METHODS: All patients who underwent CTR at our institution between 2012 and 2014 were identified and their charts were reviewed to identify those who had a history of total hip, knee, and/or shoulder arthroplasty...
March 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28194710/exchangeable-femoral-neck-dual-modular-tha-prostheses-have-poorer-survivorship-than-other-designs-a-nationwide-cohort-of-324-108-patients
#4
Sandrine Colas, Assia Allalou, Antoine Poichotte, Philippe Piriou, Rosemary Dray-Spira, Mahmoud Zureik
BACKGROUND: Exchangeable neck stems, defined as those with a dual taper (that is, a modular junction between the femoral head and the femoral neck and an additional junction between the neck and the stem body), were introduced in THA to improve restoration of joint biomechanics (restoring anteversion, offset, and limb length) and reduce the risk of dislocation. However exchangeable necks have been reported to result in adverse effects such as stem fractures and acute local tissue reaction...
February 13, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28190569/analyzing-on-the-location-of-the-bicipital-groove-for-alignment-in-shoulder-arthroplasty-of-chinese
#5
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/28182821/intrawound-vancomycin-powder-reduces-early-prosthetic-joint-infections-in-revision-hip-and-knee-arthroplasty
#6
Jeffrey E Otte, Joel R Politi, Bryan Chambers, Craig A Smith
Intrawound vancomycin powder has shown efficacy and safety in decreasing postoperative spine infections, but its use in arthroplasty has not been well established. The purpose of this study was to compare the rate of early prosthetic joint infections (PJI) with and without the use of intrawound vancomycin powder during joint arthroplasty. A retrospective cohort of all patients who underwent primary or revision hip or knee arthroplasty by two surgeons over a two-year period at a single hospital system was evaluated...
February 7, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28168063/a-rare-case-of-vancomycin-induced-linear-immunoglobulin-a-bullous-dermatosis
#7
Pinky Jha, Kurtis Swanson, Jeremiah Stromich, Basia M Michalski, Edit Olasz
Linear IgA bullous dermatosis (LABD) is an autoimmune vesiculobullous disease, which is typically idiopathic but can also rarely be caused by medications or infections. Vancomycin is the most common drug associated with LABD. Lesions typically appear 24 hours to 15 days after the first dose of vancomycin. It is best characterized pathologically by subepidermal bulla (blister) formation with linear IgA deposition at the dermoepidermal junction. Here we report an 86-year-old male with a history of left knee osteoarthritis who underwent a left knee arthroplasty and subsequently developed a prosthetic joint infection...
2017: Case Reports in Dermatological Medicine
https://www.readbyqxmd.com/read/28161138/prognosis-of-advanced-tenosynovial-giant-cell-tumor-of-the-knee-diagnosed-during-total-knee-arthroplasty
#8
Pengfei Lei, Rongxin Sun, Hao Liu, Jianxi Zhu, Ting Wen, Yihe Hu
BACKGROUND: Tenosynovial giant cell tumor (TGCT) is a relatively rare disease often misdiagnosed as osteoarthritis. Synovectomy or arthroplasty is the recommended treatment option, but recurrence is common after surgery. This study aimed to determine the prognosis of patients with advanced TGCT that was diagnosed incidentally during total knee arthroplasty (TKA) for osteoarthritis and treated by synovectomy. METHODS: From January 2008 to July 2011, TGCT was diagnosed incidentally in 10 patients (a total of 11 individual knees) undergoing posterior-stabilized TKA for an initial diagnosis of osteoarthritis...
January 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28161135/temporomandibular-total-joint-prosthesis-infections-a-ten-year-retrospective-analysis
#9
W S McKenzie, P J Louis
A retrospective review of 178 total temporomandibular joint replacements (TJR) performed on 106 patients at the University of Alabama at Birmingham during the years 2000-2010 was completed. Data regarding sex, past medical history, prosthesis manufacturer, microbiology, antibiotic therapy, and the need for additional procedures were obtained from the medical records of patients who developed a prosthetic joint infection following TJR. Of the 106 patients, 95 (89.6%) were female and 11 (10.4%) were male. The average age of the patients was 47 years (range 19-68 years)...
February 1, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28160900/evidence-based-practice-in-the-surgical-treatment-of-thumb-carpometacarpal-joint-arthritis
#10
Frank Yuan, Oluseyi Aliu, Kevin C Chung, Elham Mahmoudi
PURPOSE: Thumb carpometacarpal (CMC) arthritis contributes considerably to functional disability in the aging adult United States (US) population. Owing to the increasing growth in this segment of our population, its burden on health care resources will increase in the future. Variations exist in the degree of complexity and cost among different surgical treatments. We examined the national trends of the surgical treatment of thumb CMC arthritis and hypothesized that current practice patterns are not supported by evidence favoring the simpler trapeziectomy-only procedure...
February 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28155837/aseptic-destruction-of-the-elbow-joint-after-radial-head-replacement-case-study
#11
Marcin Błoński, Andrzej Boszczyk, Stanisław Pomianowski, Mariusz Urban
Radial head replacement should be a routine treatment in cases of non-reconstructable radial head fractures. With the growing number of radial head arthroplasties, we are going to see more complications related to this procedure. We describe a case of aseptic destruction of the elbow joint, probably related to the release of polyethylene particles from the prosthetic head. Removal of the implant and extensive synovectomy was performed, leading to an excellent clinical outcome with reduction of pain and increase in the range of motion...
November 30, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28138720/the-dual-mobility-cup-in-muscular-skeletal-oncology-rationale-and-indications
#12
Carmine Zoccali, Dario Attala, Alessandra Scotto di Uccio, Barbara Rossi, Gennaro Scotto, Roberto Biagini
PURPOSE: Because of the improvement of medical therapy and the corresponding increase in life expectancy, orthopaedic surgeons are obliged to perform more wide resections rather than intramedullary stabilization nailing for patients affected by tumours of the hip compared to the past. Wide resection often causes joint instability, so prosthetic reconstruction presents a higher risk of dislocation than in primary osteoarthritis cases. The aim of the present paper is to classify the indications for the dual mobility cup (DMC) hip prosthesis based on the anatomic structures involved in the disease and to analyse the rationale to reduce the risk of dislocation...
January 31, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28138717/-patellofemoral-arthroplasty
#13
M Cotic, P Forkel, A B Imhoff
OBJECTIVE: Isolated resurfacing of the trochlea using an inlay prosthesis without changing the complex kinematics of the patellofemoral joint. INDICATIONS: Symptomatic, isolated patellofemoral osteoarthritis or isolated osteochondral lesions, failed conservative and cartilage regeneration procedures. No or concurrently corrected ligament instability, tibiofemoral and patellofemoral malalignment. CONTRAINDICATIONS: Symptomatic patellofemoral osteoarthritis, inflammatory joint disease, chondrocalcinosis, chronic pain syndromes, active infections or knee ankylosis...
February 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28134133/a-model-for-differential-leg-joint-function-during-human-running
#14
Mu Qiao, James J Abbas, Devin L Jindrich
Locomotion requires coordination of leg joints to maintain stability and to maneuver. We studied leg joint function during constant-average-velocity running and the sagittal-plane maneuvers of step ascent and descent. We tested two hypotheses: (1) that leg joints perform distinct functions during locomotion; and (2) that humans select functional parameters to maximize intrinsic dynamic stability. We recorded whole-body kinematics and forces when participants stepped up or down a single vertical step, and found that leg joints show functional differences during both constant-average-velocity locomotion and maneuvers...
January 30, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28132822/the-release-kinetics-antimicrobial-activity-and-cytocompatibility-of-differently-prepared-collagen-hydroxyapatite-vancomycin-layers-microstructure-vs-nanostructure
#15
Tomáš Suchý, Monika Šupová, Eva Klapková, Václava Adamková, Jan Závora, Margit Žaloudková, Šárka Rýglová, Rastislav Ballay, František Denk, Marek Pokorný, Pavla Sauerová, Marie Hubálek Kalbáčová, Lukáš Horný, Jan Veselý, Tereza Voňavková, Richard Průša
The aim of this study was to develop an osteo-inductive resorbable layer allowing the controlled elution of antibiotics to be used as a bone/implant bioactive interface particularly in the case of prosthetic joint infections, or as a preventative procedure with respect to primary joint replacement at a potentially infected site. An evaluation was performed of the vancomycin release kinetics, antimicrobial efficiency and cytocompatibility of collagen/hydroxyapatite layers containing vancomycin prepared employing different hydroxyapatite concentrations...
January 27, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28129484/perioperative-timing-of-infliximab-and-the-risk-of-serious-infection-after-elective-hip-and-knee-arthroplasty
#16
Michael D George, Joshua F Baker, Jesse Yenchih Hsu, Qufei Wu, Fenglong Xie, Lang Chen, Huifeng Yun, Jeffrey R Curtis
OBJECTIVE: The optimal timing of TNF antagonists before elective surgery is unknown. This study evaluated the association between infliximab timing and serious infection after elective hip or knee arthroplasty. METHODS: A retrospective cohort study evaluated U.S. Medicare patients with rheumatoid arthritis, inflammatory bowel disease, psoriasis, psoriatic arthritis, or ankylosing spondylitis who received infliximab within 6 months of elective knee or hip arthroplasty from 2007-2013...
January 27, 2017: Arthritis Care & Research
https://www.readbyqxmd.com/read/28126880/the-management-of-prosthetic-joint-infection-in-the-community-a-guide-for-general-practice
#17
Babundo Okwechime, Oluwarantimi Ayodele, Oliver James Pearce
No abstract text is available yet for this article.
February 2017: British Journal of General Practice: the Journal of the Royal College of General Practitioners
https://www.readbyqxmd.com/read/28116262/acetabular-prosthetic-protrusio-after-bipolar-hemi-arthroplasty-of-the-hip-case-report-and-review-of-the-literature
#18
Jason Bt Lim, Chia Liang Ang, Hee Nee Pang
INTRODUCTION: Bipolar hemi-arthroplasty of the hip is a commonly performed procedure in elderly patients with intra-capsular fracture of the neck of the femur with good short-term results for pain relief, return to activity and morbidity. The incidence of intra-pelvic prosthesis migration or protrusion is rare and one of the inciting factors is chronic low-grade sepsis. Acetabular prosthesis protrusion poses a difficult and challenging surgical problem due to surrounding neurovascular structures...
July 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28116254/bilateral-prosthetic-hip-joint-infections-associated-with-a-psoas-abscess-a-case-report
#19
G D Rajitha Gunaratne, Riaz J K Khan, Cynthia Tan, Clayton Golledge
INTRODUCTION: Psoas abscess is a recognized but under-diagnosed complication of prosthetic hip joint infections. CASE REPORT: We report a case of a 68-year-old man with right and left hip arthroplasties performed 22 and 14 years ago, respectively, who presented with non-specific symptoms and was subsequently diagnosed with left psoas abscess on CT scan. Drainage of the psoas abscess was complicated by the formation of a discharging sinus connected to the left hip...
July 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28115247/long-term-release-of-antibiotics-by-carbon-nanotube-coated-titanium-alloy-surfaces-diminish-biofilm-formation-by-staphylococcus-epidermidis
#20
Josefine Hirschfeld, Eser M Akinoglu, Dieter C Wirtz, Achim Hoerauf, Isabelle Bekeredjian-Ding, Søren Jepsen, El-Mustapha Haddouti, Andreas Limmer, Michael Giersig
Bacterial biofilms cause a considerable amount of prosthetic joint infections every year, resulting in morbidity and expensive revision surgery. To address this problem, surface modifications of implant materials such as carbon nanotube (CNT) coatings have been investigated in the past years. CNTs are biologically compatible and can be utilized as drug delivery systems. In this study, multi-walled carbon nanotube (MWCNT) coated TiAl6V4 titanium alloy discs were fabricated and impregnated with Rifampicin, and tested for their ability to prevent biofilm formation over a period of ten days...
January 20, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
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