keyword
https://read.qxmd.com/read/35855120/early-experience-with-patient-specific-low-cost-3d-printed-polymethylmethacrylate-cranioplasty-implants-in-a-lower-middle-income-country-technical-note-and-economic-analysis
#21
JOURNAL ARTICLE
Mohammad Ashraf, Nabeel Choudhary, Usman Ahmad Kamboh, Muhammad Asif Raza, Kashif Ali Sultan, Naseeruddin Ghulam, Syed Shahzad Hussain, Naveed Ashraf
Background: Polymethyl methacrylate (PMMA) cranioplasty, while widely prevalent, has limitations associated with freehand manual intraoperative molding. PMMA has been superseded by titanium or Polyetheretherketone implants, prefabricated commercially from preoperative CT scans, and boasting superior clinical and cosmetic outcomes. However, such services are extremely inaccessible and unaffordable in the lower-middle-income country (LMIC) settings. The study aims to describe, in detail, the process of making ultra-low-cost patient-specific PMMA cranioplasty implants with minimum resources using open-access software...
2022: Surgical Neurology International
https://read.qxmd.com/read/35804172/intra-and-inter-operator-concordance-of-the-resonance-frequency-analysis-a-cross-sectional-and-prospective-clinical-study
#22
JOURNAL ARTICLE
Raquel Antequera-Diaz, Maria-Pilar Quesada-García, Cristina Vallecillo, Marta Vallecillo-Rivas, Esther Muñoz-Soto, Maria-Victoria Olmedo-Gaya
OBJECTIVE: Resonance frequency analysis (RFA) provides an evaluation of implant stability over time. This analysis is a non-invasive, precise, and objective method. Several studies compare the RFA system with other devices. However, few investigations analyze repeatability and reproducibility between different operators. The aim of this study was to evaluate the intra- and inter-operator concordance of the Osstell® ISQ. MATERIAL AND METHODS: RFA measurements were performed with Osstell® ISQ in a total of 37 implants placed in 21 patients...
July 8, 2022: Clinical Oral Investigations
https://read.qxmd.com/read/35696772/model-validation-for-estimating-taper-microgroove-deformation-during-total-hip-arthroplasty-head-neck-assembly
#23
JOURNAL ARTICLE
Michael Godoy, Jonathan A Gustafson, Justin S Hertzler, Jeffrey E Bischoff, Robin Pourzal, Hannah J Lundberg
Total hip arthroplasty (THA) failure and the need for revision surgery can result from fretting-corrosion damage of the head-neck modular taper junctions. Prior work has shown that implant geometry, such as microgrooves, influences damage on retrieved implants. Microgroove deformation within the modular taper junction occurs when the female head taper meets the male stem taper during THA surgical procedure. The objective of this work was to validate microgroove deformation after head-neck THA assembly as calculated by finite element analysis (FEA)...
July 2022: Journal of Biomechanics
https://read.qxmd.com/read/35028014/classification-and-research-progress-of-implant-surface-antimicrobial-techniques
#24
REVIEW
Tian-Xia Zheng, Wen Li, Ying-Ying Gu, Di Zhao, Meng-Chun Qi
Due to the good biocompatibility and ideal mechanical property, titanium implants have been widely used in dental clinic and orthopedic surgery. However, bacteria induced infection can cause per-implant inflammation and decrease the success rate of implant surgery. Therefore, developing antimicrobial techniques is essential to successful application of titanium implants. Many surface antimicrobial techniques, including antimicrobial coating and surface modifications, have been explored and they always exert antimicrobial effect by reducing bacterial adhesion, inhibiting their metabolism, or destructing cell structure...
January 2022: Journal of Dental Sciences
https://read.qxmd.com/read/34701085/androgen-receptor-pathway-gene-expression-after-high-dose-rate-prostate-brachytherapy
#25
JOURNAL ARTICLE
P Kundu, A Lim, E Y Lin, M L Steinberg, A J Chang
PURPOSE/OBJECTIVE(S): Androgen deprivation therapy (ADT) is commonly used after radiation therapy in the treatment of prostate cancer. Though radiation has generally been shown to upregulate androgen receptor (AR) expression, the effect of high dose rate (HDR) brachytherapy on AR expression is unknown. We hypothesize that expression of AR and corresponding target genes will be altered by HDR brachytherapy. MATERIALS/METHODS: 10 Patients with intermediate risk prostate cancer (age 51-78; 7 GS 3+4, 3 GS 4+3) underwent HDR brachytherapy (2 implants, 13...
November 1, 2021: International Journal of Radiation Oncology, Biology, Physics
https://read.qxmd.com/read/34507297/bilateral-open-sacroiliac-joint-fusion-during-adult-spinal-deformity-surgery-using-triangular-titanium-implants-technique-description-and-presentation-of-21-cases
#26
JOURNAL ARTICLE
Christopher T Martin, Kenneth J Holton, Kristen E Jones, Jonathan N Sembrano, David W Polly
OBJECTIVE: Pelvic fixation enhances long constructs during deformity surgery. Subsequent loosening of iliac screws and pain at the pelvis occur in as many as 29% of patients. Concomitant sacroiliac (SI) fusion may prevent potential pain and failure. The objective of this study was to describe a novel surgical technique and a single institution's experience using bilateral SI fusion during adult deformity surgery with S2-alar-iliac (S2AI) screws and triangular titanium rods (TTRs) placed with navigation...
January 1, 2022: Journal of Neurosurgery. Spine
https://read.qxmd.com/read/34214611/final-opinion-on-the-safety-of-breast-implants-in-relation-to-anaplastic-large-cell-lymphoma-report-of-the-scientific-committee-on-health-emerging-and-environmental-risks-scheer
#27
JOURNAL ARTICLE
Wim H De Jong, Demosthenes Panagiotakos, Ana Proykova, Theodoros Samaras, Mark W Clemens, Daphne De Jong, Ingrid Hopper, Hinne A Rakhorst, Fabio Santanelli di Pompeo, Suzanne D Turner
The Scientific Committee on Health, Environmental and Emerging Risks (SCHEER) was requested by the European Commission (EC) to provide a scientific opinion on the safety of breast implants in relation to anaplastic large cell lymphoma (ALCL). There are several types of textured breast implants; surface textures of breast implants are not all manufactured in the same way, and breast implants with diverse surface textures may also present different benefits. The magnitude of the risk per type of textured implant is difficult to establish due to the low incidence of the breast implants associated anaplastic large cell lymphoma (BIA-ALCL)...
June 29, 2021: Regulatory Toxicology and Pharmacology: RTP
https://read.qxmd.com/read/33620918/memorygel-breast-implants-final-safety-and-efficacy-results-after-10-years-of-follow-up
#28
JOURNAL ARTICLE
David A Caplin, M Bradley Calobrace, Roger N Wixtrom, Megan M Estes, John W Canady
BACKGROUND: Mentor MemoryGel Breast Implants were approved by the U.S. Food and Drug Administration in November of 2006. Patients in the Core clinical study supporting this approval were followed for 10 years. METHODS: This prospective, multicenter, clinical study included primary augmentation, revision augmentation, primary reconstruction, and revision reconstruction patients implanted with smooth or Siltex Texture MemoryGel Implants. Incidence, severity, and method of resolution for all postoperative complications were assessed on per-patient and per-implant bases...
March 1, 2021: Plastic and Reconstructive Surgery
https://read.qxmd.com/read/33574463/arrays-of-si-vacancies-in-4h-sic-produced-by-focused-li-ion-beam-implantation
#29
JOURNAL ARTICLE
Shojan P Pavunny, Andrew L Yeats, Hunter B Banks, Edward Bielejec, Rachael L Myers-Ward, Matthew T DeJarld, Allan S Bracker, D Kurt Gaskill, Samuel G Carter
Point defects in SiC are an attractive platform for quantum information and sensing applications because they provide relatively long spin coherence times, optical spin initialization, and spin-dependent fluorescence readout in a fabrication-friendly semiconductor. The ability to precisely place these defects at the optimal location in a host material with nano-scale accuracy is desirable for integration of these quantum systems with traditional electronic and photonic structures. Here, we demonstrate the precise spatial patterning of arrays of silicon vacancy ([Formula: see text]) emitters in an epitaxial 4H-SiC (0001) layer through mask-less focused ion beam implantation of Li+ ...
February 11, 2021: Scientific Reports
https://read.qxmd.com/read/33465812/ultrasonographic-tissue-perfusion-analysis-at-implant-and-palatal-donor-sites-following-soft-tissue-augmentation-a-clinical-pilot-study
#30
JOURNAL ARTICLE
Lorenzo Tavelli, Shayan Barootchi, Jad Majzoub, Hsun-Liang Chan, William V Giannobile, Hom-Lay Wang, Oliver D Kripfgans
AIM: To describe the application of power Doppler Ultrasonography (US) for evaluating blood flow at implant and palatal donor sites following soft tissue augmentation with the connective tissue graft (CTG). MATERIALS AND METHODS: Five patients exhibiting a per-implant soft tissue dehiscence received treatment with a coronally advanced flap and corresponding CTG. Power Doppler US was used for assessing blood volume at baseline, 1 week, 1 month, 6 months and 12 months post-surgery for assessing blood flow dynamics at the implant and palatal donor sites...
January 19, 2021: Journal of Clinical Periodontology
https://read.qxmd.com/read/33347943/design-and-testing-of-a-cabotegravir-implant-for-hiv-prevention
#31
JOURNAL ARTICLE
Dipu Karunakaran, Solange M Simpson, Jonathan T Su, Ewa Bryndza-Tfaily, Thomas J Hope, Ronald Veazey, Georgina Dobek, Jiang Qiu, David Watrous, Samuel Sung, Jorge E Chacon, Patrick F Kiser
Long-acting antiretroviral implants could help protect high-risk individuals from HIV infection. We describe the design and testing of a long-acting reservoir subcutaneous implant capable of releasing cabotegravir for several months. We compressed cabotegravir and excipients into cylindrical pellets and heat-sealed them in tubing composed of hydrophilic poly(ether-urethane) -. The implants have a 47 mm lumen length, 3.6 mm outer diameter, and 200 μm wall thickness. Four cabotegravir pellets were sealed in the membrane, with a total drug loading of 274 ± 3 mg...
February 10, 2021: Journal of Controlled Release
https://read.qxmd.com/read/33068331/longitudinal-economic-analysis-of-bonebridge-601-versus-percutaneous-bone-anchored-hearing-devices-over-a-5-year-follow-up-period
#32
JOURNAL ARTICLE
Nikul Amin, Andrew Jonathan Soulby, Daniele Borsetto, Irumee Pai
OBJECTIVES: Percutaneous bone anchored hearing devices (pBAHDs) are the most commonly used bone conduction implants (BCI). Concerns surround the long-term complications, notably skin-related, in patients with percutaneous abutments. The active transcutaneous BCI Bonebridge system can help avoid some of these pitfalls but is often considered a second line option due to various factors including perceived increased overall costs. DESIGN: Longitudinal economic analysis of Bonebridge BCI 601 versus pBAHD over a 5-year follow-up period...
October 17, 2020: Clinical Otolaryngology
https://read.qxmd.com/read/32810135/antibiotic-dosage-prescribed-in-oral-implant-surgery-a-meta-analysis-of-cross-sectional-surveys
#33
JOURNAL ARTICLE
Fabio Rodríguez Sánchez, Iciar Arteagoitia, Wim Teughels, Carlos Rodríguez Andrés, Marc Quirynen
This study aimed to assess the dosage and types of antibiotics prescribed in oral implant surgery, compare them among the different subpopulations (country and prescription regimens) and against the evidence-based recommended dosage: a 2-gram single preoperative dose of amoxicillin. A meta-analysis of cross-sectional surveys was conducted, which reports the overall dosage (and type) of antibiotics prescribed in combination with implant placement. PubMed, Cochrane, Science, Direct, and EMBASE via OVID were searched until April 2019...
2020: PloS One
https://read.qxmd.com/read/32694446/breast-implant-associated-anaplastic-large-cell-lymphoma-incidence-determining-an-accurate-risk
#34
JOURNAL ARTICLE
Jonas A Nelson, Stefan Dabic, Babak J Mehrara, Peter G Cordeiro, Joseph J Disa, Andrea L Pusic, Evan Matros, Joseph H Dayan, Robert J Allen, Michelle Coriddi, Thais O Polanco, Meghana G Shamsunder, Itay Wiser, Monica Morrow, Ahmet Dogan, Michele R Cavalli, Elizabeth Encarnacion, Meghan E Lee, Colleen M McCarthy
OBJECTIVE: This study sought to estimate the incidence and incidence rate of breast implant-associated anaplastic large cell lymphoma (BIA-ALCL) at a high-volume single institution, which enables vigorous long-term follow-up and implant tracking for more accurate estimates. SUMMARY BACKGROUND DATA: The reported incidence of BIA-ALCL is highly variable, ranging from 1 in 355 to 1 in 30,000 patients, demonstrating a need for more accurate estimates. METHODS: All patients who underwent implant-based breast reconstruction from 1991 to 2017 were retrospectively identified...
September 1, 2020: Annals of Surgery
https://read.qxmd.com/read/32545150/clinical-efficacy-of-photodynamic-therapy-as-an-adjunct-to-mechanical-debridement-in-the-treatment-of-per-implantitis-with-abscess
#35
JOURNAL ARTICLE
Thamer Almohareb, Nawaf Alhamoudi, Modhi Al Deeb, Mohammed S Bin-Shuwaish, Sameer A Mokeem, Syed Saad Shafqat, Fahim Vohra, Tariq Abduljabbar
AIM: The aim of the present clinical trial was to evaluate the efficacy of photodynamic therapy (PDT) as an adjunct to mechanical debridement (MD) in the treatment of severe peri-implantitis (PI) with abscess. MATERIALS AND METHODS: Selected individuals with severe PI were divided into two groups: Group A: received methylene blue mediated (PDT) using diode laser as an adjunct to MD, whereas, Group B received thrice daily application of 500 mg amoxicillin and 400 mg metronidazole with adjunctive MD...
June 2020: Photodiagnosis and Photodynamic Therapy
https://read.qxmd.com/read/32425022/computer-based-quantification-of-an-atraumatic-sinus-augmentation-technique-using-cbct
#36
JOURNAL ARTICLE
F Inchingolo, G Dipalma, G Paduanelli, L A De Oliveira, A M Inchingolo, P I Georgakopoulos, A D Inchingolo, G Malcangi, E Athanasiou, E Fotopoulou, S Tsantis, I P Georgakopoulos, N C Diem Kieu, C Gargiulo Isacco, A Ballini, F Goker, C Mortellaro, A Greco Lucchina, M Del Fabbro
Our group recently developed an innovative maxillary sinus augmentation technique without the need of sinus membrane elevation, termed as "IPG" DET protocol. This technique utilizes autologous platelet concentrates (including platelet rich plasma (PRP), platelet rich fibrin (PRF), growth factors (GFs) and CD34+ stem cells), together with bone grafting materials positioned through intentionally perforated Schneider's membrane for flapless implant placement. This study aimed at evaluating the performance of "IPG" DET protocol in terms of new bone formation and implant stability at 8 months post-op...
November 2019: Journal of Biological Regulators and Homeostatic Agents
https://read.qxmd.com/read/32389862/application-of-robot-assisted-frameless-stereoelectroencephalography-based-on-multimodal-image-guidance-in-pediatric-refractory-epilepsy-experience-of-a-pediatric-center-in-a-developing-country
#37
JOURNAL ARTICLE
Rui Zhao, Ping Xue, Yuanfeng Zhou, Haowei Yang, Shuizhen Zhou, Yi Wang, Hao Li
OBJECTIVE: To introduce the application of robot-assisted frameless stereoelectroencephalography (SEEG) based on multimodal image fusion technology in pediatric refractory epilepsy in a pediatric center from a developing country. METHODS: We retrospectively evaluated pediatric patients with drug-resistant epilepsy who underwent SEEG monitoring at the Children's Hospital of Fudan University from July 2014 to August 2017. Application of multimodal image fusion technology in SEEG was described in detail...
August 2020: World Neurosurgery
https://read.qxmd.com/read/32307087/loop-recorder-implantation-on-a-telemetry-ward
#38
JOURNAL ARTICLE
Alicia Chionchio, Beom Soo Kim, David Chang, James Gabriels, Arvind Devanabanda, Jonathan Willner, Stuart Beldner, Laurence M Epstein
The implantable loop recorder (ILR) is a valuable tool used in the evaluation of syncope, arrhythmia, and cryptogenic stroke. In the inpatient setting, ILRs are routinely implanted in the electrophysiology (EP) lab despite the low complication rate. The purpose of this study was to evaluate the safety, feasibility, and cost of implanting ILRs at the patient's bedside by both electrophysiologists and advanced practice providers (APPs). This was a single center, retrospective study of consecutive ILR implantations performed from February 2018 to May 2019...
June 15, 2020: American Journal of Cardiology
https://read.qxmd.com/read/32260177/optimizing-manufacturing-and-osseointegration-of-ti6al4v-implants-through-precision-casting-and-calcium-and-phosphorus-ion-implantation-in-vivo-results-of-a-large-scale-animal-trial
#39
JOURNAL ARTICLE
Wölfle-Roos Jv, Katmer Amet B, Fiedler J, Michels H, Kappelt G, Ignatius A, Dürselen L, Reichel H, Brenner Re
BACKGROUND: Uncemented implants are still associated with several major challenges, especially with regard to their manufacturing and their osseointegration. In this study, a novel manufacturing technique-an optimized form of precision casting-and a novel surface modification to promote osseointegration-calcium and phosphorus ion implantation into the implant surface-were tested in vivo. METHODS: Cylindrical Ti6Al4V implants were inserted bilaterally into the tibia of 110 rats...
April 3, 2020: Materials
https://read.qxmd.com/read/32215673/sonication-in-shoulder-surgery-is-it-necessary
#40
JOURNAL ARTICLE
Carlos Torrens, Anna Fraile, Fernando Santana, Lluis Puig, Albert Alier
PURPOSE: The objective of the present study was to determine whether sonication yields greater sensitivity when compared with the traditional tissue culture in detecting peri-implant infections in shoulder surgery. METHODS: It is a retrospective study that includes 99 shoulder surgeries with implants explanted. The inclusion criteria required at least four tissue cultures, sonication of the material explanted, and a minimum follow-up of two years. Patients were classified according to the definition of periprosthetic shoulder infection of the 2018 International Consensus Meeting on Orthopedic Infections...
March 26, 2020: International Orthopaedics
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