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https://www.readbyqxmd.com/read/28604508/symptomatic-adjacent-segment-disease-after-anterior-cervical-discectomy-for-single-level-degenerative-disk-disease
#1
Roland D Donk, Wim I M Verhagen, Allard J F Hosman, Andre Verbeek, Ronald H M A Bartels
STUDY DESIGN: A prospective cohort of 142 patients underwent either anterior cervical discectomy alone, anterior cervical discectomy with fusion by cage stand-alone, or anterior cervical discectomy with arthroplasty. We then followed up on their condition for a mean of 9.1±1.9 years (5.6-12.2 y) later. OBJECTIVE: We aimed to evaluate the annual rate of clinically symptomatic adjacent segment disease (ASD) and to analyze predictive factors. SUMMARY OF BACKGROUND DATA: Until recent, ASD has been predominantly evaluated radiologically...
June 9, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28591928/-does-sports-activity-influence-total-knee-arthroplasty-durability-analysis-with-a-follow-up-of-12-years
#2
Christina Valle, Michael Sperr, Christina Lemhöfer, Karla Elida Bartel, Marcus Schmitt-Sody
Background Total knee replacement is the only surgical option to treat painful degenerative osteoarthritis, restore knee function, improve quality of life, and enable patients to return to sports activity. With an aging population expecting an active life after retirement, patients' expectations of improvement after surgery are increasing as well. In view of the growing demand for higher performance, exercise and athletic activity, clinicians have been increasingly forced to question how much athletic activity a patient may resume after total knee replacement, and what types of athletic activity seem to be acceptable...
June 2017: Sportverletzung Sportschaden: Organ der Gesellschaft Für Orthopädisch-Traumatologische Sportmedizin
https://www.readbyqxmd.com/read/28578795/heterotopic-ossification-after-total-ankle-replacement-the-role-of-prosthesis-alignment
#3
Sebastian Manegold, Alexander Springer, Kristin Landvoigt, Serafim Tsitsilonis
BACKGROUND: The aetiology of heterotopic ossifications (HO) after total ankle arthroplasty (TAR) remains controversial. The aim of the study was to evaluate the prevalence and localisation of HO and the effect of alignment. METHODS: 88 TARs with a series of radiological controls and follow-up of 36 months were evaluated. Frontal and sagittal alignment parameters (alfa and beta angle defined by Hintermann) and tibial coverage were evaluated. RESULTS: The prevalence and grading of HO increased over time, mostly in the posterior gutter...
June 2017: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28570238/transcatheter-aortic-valve-replacement-for-perceval-sutureless-aortic-valve-failure
#4
Ankur Kalra, Manuel Reyes, Eric Y Yang, Stephen H Little, Faisal Nabi, Colin M Barker, Mahesh Ramchandani, Ross M Reul, Michael J Reardon, Neal S Kleiman
As experience with Perceval aortic prosthesis and valve-in-valve TAVR grows, it will be crucial to meticulously document short- and long-term follow-up for establishment of real-world safety and durability of these new technologies.
June 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28530256/can-the-onset-of-orbital-cancer-be-the-result-of-a-prosthetic-eye
#5
A Croce, V Mastronardi, M Laus, E Festa Kotelnikova
Orbital exenteration is a disfiguring procedure performed for unresponsive orbital infections and control of recurrent benign tumours and malignancies arising from the eyelids (basal cell carcinoma, squamous cell carcinoma, conjunctival malignant melanoma), lachrymal glands (adenoid cystic carcinoma) or surrounding sinuses. In extremely rare cases the use of a prosthetic eye after enucleation can lead to anophthalmic socket tumours. We report the case of a 54-year-old man who had left eye enucleation due to recurring events of retinal detachment and who developed an invasive fast growing epidermoid carcinoma 30 years later...
May 22, 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28511707/rapid-deployment-valve-system-shortens-operative-times-for-aortic-valve-replacement-through-right-anterior-minithoracotomy
#6
Constanze Bening, Khaled Hamouda, Mehmet Oezkur, Christoph Schimmer, Ina Schade, Armin Gorski, Ivan Aleksic, Rainer Leyh
BACKGROUND: There is growing evidence from the literature that right anterior minithoracotomy aortic valve replacement (RAT-AVR) improves clinical outcome. However, increased cross clamp time is the strongest argument for surgeons not performing RAT-AVR. Rapid deployment aortic valve systems have the potential to decrease cross-clamp time and ease this procedure. We assessed clinical outcome of rapid deployment and conventional valves through RAT. METHODS: Sixty-eight patients (mean age 76 ± 6 years, 32% females) underwent RAT-AVR between 9/2013 and 7/2015...
May 16, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28462222/the-ross-procedure-time-for-a-hard-look-at-current-practices-and-a-reexamination-of-the-guidelines
#7
EDITORIAL
Ismail El-Hamamsy, Ismail Bouhout
The ideal aortic valve substitute for young adults requiring aortic valve replacement (AVR) remains elusive. Young and middle-aged patients have a longer anticipated life expectancy and a higher level of physical activity than their elderly counterparts. In recent years, there has been a growing focus on long-term outcomes following AVR in this specific patient population. These studies highlight the direct impact of the choice of prosthesis on long-term survival, quality of life and rates of valve-related complications in younger adults...
March 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28336947/an-ideal-dielectric-coat-to-avoid-prosthesis-rf-artefacts-in-magnetic-resonance-imaging
#8
U Zanovello, L Matekovits, L Zilberti
The number of people submitted to total hip or knee arthroplasty increased in the last years and it is likely to grow further. Hence, the importance of a proper investigation tool that allows to determine and recognize the potential presence of perioperative and/or postoperative diseases becomes clear. Although the Magnetic Resonance Imaging (MRI) technique demonstrated several advantages over the other common tomography tools, it suffers from the arise of image artefacts if it is performed in presence of metallic prostheses...
March 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28314214/gait-biomechanics-following-lower-extremity-trauma-amputation-vs-reconstruction
#9
Elizabeth Russell Esposito, Daniel J Stinner, John R Fergason, Jason M Wilken
BACKGROUND: Surgical advances have substantially improved outcomes for individuals sustaining traumatic lower extremity injury. Injuries once requiring lower limb amputation are now routinely managed with limb reconstruction surgery. However, comparisons of functional outcomes between the procedures are inconclusive. PURPOSE: To compare gait biomechanics after lower limb reconstruction and transtibial amputation. METHODS: Twenty-four individuals with unilateral lower limb reconstruction wearing a custom ankle-foot orthosis (Intrepid Dynamic Exoskeletal Orthosis), 24 with unilateral, transtibial amputation, and 24 able-bodied control subjects underwent gait analysis at a standardized Froude speed based on leg length...
February 21, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28285881/finite-element-analysis-of-the-amputated-lower-limb-a-systematic-review-and-recommendations
#10
REVIEW
A S Dickinson, J W Steer, P R Worsley
The care and rehabilitation of individuals after lower limb amputation presents a substantial and growing socioeconomic challenge. Clinical outcome is closely linked to successful functional rehabilitation with a prosthetic limb, which depends upon comfortable prosthetic limb - residual limb load transfer. Despite early interest in the 1980s, the amputated limb has received considerably less attention in computational biomechanical analysis than other subjects, such as arthroplasty. This systematic literature review investigates the state of the art in residual limb finite element analysis published since 2000...
March 9, 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28275847/the-compress%C3%A2-transcutaneous-implant-for-rehabilitation-following-limb-amputation
#11
R L McGough, M A Goodman, R L Randall, J A Forsberg, B K Potter, B Lindsey
Amputation is an unfortunate outcome of a variety of orthopedic conditions. Many amputees can be functionally fitted with conventional suspension sockets. A substantial subset, however, fails this conventional treatment and is unable to function. In Europe, an alternative to socket-based prostheses has been available for 25 years. Patients there who are unable to functionally use socket-based prostheses have been offered the possibility for transcutaneous osseointegration. With this technology, the prosthetic limb can be rigidly attached to the residual bone, and the socket is eliminated, in many cases enabling improved function and patient satisfaction...
March 8, 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28252475/management-of-interprosthetic-femur-fractures
#12
John A Scolaro, Ran Schwarzkopf
Femoral fractures between a total hip arthroplasty prosthesis and total knee arthroplasty prosthesis, also called interprosthetic fractures, are challenging clinical problems. The number of patients who have undergone ipsilateral primary or revision joint arthroplasty procedures in both the hip and the knee continues to rise, and the number of interprosthetic fractures is increasing, as well. The growing body of biomechanical and clinical literature on interprosthetic fractures reflects the increased frequency of and interest in these injuries...
April 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27989048/complicated-infective-endocarditis-of-a-mechanical-aortic-valve-due-to-propionibacterium-acnes
#13
Eva De Caluwé, Jan Verwerft
Propionibacterium acnes is known to be a causative microorganism in low-grade and late prosthetic valve endocarditis. Here, the case is reported of a late, apparently culture-negative endocarditis of an aortic mechanical prosthesis, diagnosed to be caused by P. acnes after pan-bacterial polymerase chain reaction (PCR) on the explanted mechanical prosthetic valve. This endocarditis was complicated by an aortic root abscess; after surgical resection a ventricular septal defect (VSD) with overt right ventricular and multiple organ failure occurred...
May 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27989047/results-of-contemporary-valve-surgery-in-patients-with-carcinoid-heart-disease
#14
Thomas Kuntze, Tamer Owais, Maria-Anna Secknus, Daniel Kaemmerer, Richard Baum, Evaldas Girdauskas
BACKGROUND: Carcinoid tumor is a slow-growing type of neuroendocrine tumor, originating from enterochromaffin cells and secreting mainly serotonin. The diagnosis is based on clinical symptoms, hormone blood levels, radiological and nuclear imaging, and histological confirmation. However, most patients have metastases at the time of diagnosis because the clinical signs often remain unnoticed or are attributed to other abdominal conditions. In up to 50% of patients the endocardium is affected due to a hormonally active tumor profile...
May 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27909134/what-is-the-morbidity-of-a-non-invasive-growing-prosthesis
#15
M M Gilg, C L Gaston, M C Parry, L Jeys, A Abudu, R M Tillman, S R Carter, R J Grimer
AIMS: Extendible endoprostheses have been available for more than 30 years and have become more sophisticated with time. The latest generation is 'non-invasive' and can be lengthened with an external magnetic force. Early results have shown a worryingly high rate of complications such as infection. This study investigates the incidence of complications and the need for further surgery in a cohort of patients with a non-invasive growing endoprosthesis. PATIENTS AND METHODS: Between 2003 and June 2014, 50 children (51 prostheses) had a non-invasive growing prosthesis implanted for a primary bone sarcoma...
December 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27884340/use-of-an-experimental-model-to-evaluate-infection-resistance-of-meshes-in-abdominal-wall-surgery
#16
Ramón Pérez-Tanoira, C Lévano-Linares, Á Celdrán-Uriarte, M C Isea-Peña, M Sánchez De Molina, C García-Vasquez, J Esteban-Moreno
BACKGROUND: Staphylococcal species are the most common organisms causing prosthetic mesh infections, however, infections due to rapidly growing mycobacteria are increasing. This study evaluates the resistance of biomaterial for abdominal wall prostheses against the development of postoperative infection in a rat model. MATERIAL AND METHODS: In 75 rats, we intramuscularly implanted three different types of prostheses: (1) low-density polypropylene monofilament mesh (PMM), (2) high-density PMM, and (3) a composite prosthesis composed of low-density PMM and a nonporous hydrophilic film...
December 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27873034/on-the-mechanics-of-transcatheter-aortic-valve-replacement
#17
Lakshmi P Dasi, Hoda Hatoum, Arash Kheradvar, Ramin Zareian, S Hamed Alavi, Wei Sun, Caitlin Martin, Thuy Pham, Qian Wang, Prem A Midha, Vrishank Raghav, Ajit P Yoganathan
Transcatheter aortic valves (TAVs) represent the latest advances in prosthetic heart valve technology. TAVs are truly transformational as they bring the benefit of heart valve replacement to patients that would otherwise not be operated on. Nevertheless, like any new device technology, the high expectations are dampened with growing concerns arising from frequent complications that develop in patients, indicating that the technology is far from being mature. Some of the most common complications that plague current TAV devices include malpositioning, crimp-induced leaflet damage, paravalvular leak, thrombosis, conduction abnormalities and prosthesis-patient mismatch...
February 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/27818810/familial-adenomatous-polyposis-manifesting-as-lactococcus-endocarditis-a-case-report-and-review-of-the-association-of-lactococcus-with-underlying-gastrointestinal-disease
#18
Taylor C Bazemore, Stacey A Maskarinec, Kahli Zietlow, Edward F Hendershot, John R Perfect
A 45-year-old male with a prosthetic aortic valve presented to the hospital with several months of generalized malaise. On admission, he was noted to have anemia of unclear etiology and subsequently became febrile with multiple blood cultures growing Lactococcus garvieae. Inpatient workup was concerning for infectious endocarditis (IE) secondary to Lactococcus. The patient was discharged home with appropriate antimicrobial therapy; however, he was readmitted for persistent, symptomatic anemia and underwent colonoscopy, which revealed innumerable colonic polyps consistent with Familial Adenomatous Polyposis (FAP) that was later confirmed with genetic testing...
2016: Case Reports in Infectious Diseases
https://www.readbyqxmd.com/read/27774442/the-sequential-management-of-recurrent-temporomandibular-joint-ankylosis-in-a-growing-child-a-case-report
#19
Jung-Won Cho, Jung-Hyun Park, Jin-Woo Kim, Sun-Jong Kim
BACKGROUND: Temporomandibular joint (TMJ) ankylosis in children often leads to facial deformity, functional deficit, and negative influence of the psychosocial development, which worsens with growth. The treatment of TMJ ankylosis in the pediatric patient is much more challenging than in adults because of a high incidence of recurrence and unfavorable growth of the mandible. CASE REPORT: This is a case report describing sequential management of the left TMJ ankylosis resulted from trauma in early childhood...
December 2016: Maxillofacial Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27734178/transcatheter-valve-underexpansion-limits-leaflet-durability-implications-for-valve-in-valve-procedures
#20
Caitlin Martin, Wei Sun
Transcatheter aortic valve (TAV) implantation within a failed bioprosthetic valve is a growing trend for high-risk patients. The non-compliant stent of the previous prosthesis may prevent full expansion of the TAV, which has been shown to distort the leaflet configuration, and has been hypothesized to adversely affect durability. In this study, TAV leaflet fatigue damage under cyclic pressurization in the setting of stent underexpansion by 0 (fully expanded), 1, 2 and 3 mm was simulated using finite element analysis to test this hypothesis...
February 2017: Annals of Biomedical Engineering
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