Introduction: Our objective in this study was to prepare a novel type of polymethyl methacrylate (PMMA) bone cement, analyze its material properties, and evaluate its safety and antibacterial efficacy.
Methods: A halamine compound methacrylate antibacterial PMMA bone cement containing an N-Cl bond structure was formulated, and its material characterization was determined with Fourier transform infrared spectroscopy (FT-IR) and H-NMR. The antibacterial properties of the material were studied using contact bacteriostasis and releasing-type bacteriostasis experiments. Finally, and biocompatibility experiments were performed to analyze the toxic effects of the material on mice and embryonic osteoblast precursor cells (MC3T3-E1).
Results: Incorporation of the antibacterial methacrylate monomer with the N-halamine compound in the new antibacterial PMMA bone cement significantly increased its contact and releasing-type bacteriostatic performance against . Notably, at 20% and 25% additions of N-halamine compound, the contact and releasing-type bacteriostasis rates of bone cement samples reached 100% ( < 0.001). Furthermore, the new antibacterial bone cement containing 5%, 10%, and 15% N-halamine compounds showed good biocompatibility and .
Conclusion: In this study, we found that the novel antibacterial PMMA bone cement with N-halamine compound methacrylate demonstrated good contact and releasing-type bacteriostatic properties against . In particular, bone cement containing a 15% N-halamine monomer exhibited strong antibacterial properties and good and biocompatibility.
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http://dx.doi.org/10.3389/fbioe.2024.1414005 | DOI Listing |
Oper Orthop Traumatol
December 2024
Department for Orthopaedic and Trauma Surgery, Lucerne Cantonal Hospital LUKS, Spitalstrasse, Lucerne, Switzerland.
Objective: To maximize local tumor control, stabilize affected bones, and preserve or replace joints with minimal interventional burden, thereby enhancing quality of life for empowered living.
Indications: Suitable for patients with bone metastases, particularly those with severe pain and/or fractures and appropriate life expectancy.
Contraindications: In primary bone tumors, refer to the sarcoma surgery team for evaluation of wide resection.
Plast Aesthet Nurs (Phila)
December 2024
Sowmya Srinivas, BDS, MDS, PhD, is an Assistant Professor at the Department of Prosthodontics, JSS Dental College and Hospital, JSS Academy of Higher Education and Research, Mysore, Karnataka, India.
Placing an implant immediately into extraction sockets provides a distinct advantage over delayed placement, eliminating the need for a 4 to 6 months waiting period for bone formation. However, when patients present with hypothyroidism, the feasibility of immediate placement of dental implants becomes uncertain. This case involved a hypothyroid woman in her late 60s with loose lower anterior teeth.
View Article and Find Full Text PDFArch Orthop Trauma Surg
December 2024
Department of Orthopedics and Trauma Surgery, Ospedale Civile Maggiore Di Borgo Trento, University of Verona, Piazzale Aristide Stefani, 1, 37126, Verona, VR, Italy.
Purpose: The main objective of this prospective study was to assess clinical, radiographic and safety mid-term outcomes after THA with a short cemented stem in an elderly patient cohort. Moreover, the study aimed at investigating the mid-term survivorship of the implant and the incidence of complications.
Methods: 96 consecutive patients (100 cases) underwent THA with a short cemented stem.
Cureus
November 2024
Department of Pathology, Kindai University Faculty of Medicine, Osakasayama, JPN.
Enchondroma rarely occurs in the distal phalanx, and avulsion of the flexor digitorum profundus (FDP) tendon in this area is also rare. We report a case of recurrent enchondroma in the distal phalanx, which required reconstruction for an accidental FDP avulsion during surgery. A 36-year-old right-handed woman visited our hospital with a suspected recurrence of enchondroma and a planned surgery.
View Article and Find Full Text PDFClin Orthop Relat Res
October 2024
Rush Copley Medical Center, Aurora, IL, USA.
Background: Polymethylmethacrylate (PMMA) antibiotic-laden bone cement (ALBC) is commonly used in total joint arthroplasty to treat and potentially prevent prosthetic joint infection (PJI). Multiple properties impact the elution characteristics of antibiotics from PMMA-based ALBC, including viscosity. What is not known is how medium-viscosity cement formulations affect antibiotic elution and how different cement products from different manufacturers compare regarding reaching the minimum inhibitory concentration (MIC) of antibiotics for common PJI-causing organisms in an in vitro setting.
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