The Reamer-Irrigator-Aspirator (RIA) device represents a safe and efficient method to harvest autologous bone for grafting. However, hardware failure may occur, for example by breakage of the reamer head with metal debris remaining in the intramedullary canal. This case report describes the uncomplicated secondary removal of femoral intramedullary metal debris from a broken RIA reamer head; three weeks after the final surgery of a two-stage Masquelet procedure for the treatment of posttraumatic segmental bone loss at the tibia.
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http://dx.doi.org/10.1016/j.tcr.2024.101112 | DOI Listing |
Cureus
December 2024
Orthopedic Surgery, Middlebrook Family Medicine, Middlebrook, USA.
The treatment for osteoarthritis (OA) often requires total joint arthroplasty (TJA) when less invasive approaches fail. The annual incidence of TJA is rising. Metal-on-metal (MoM) hip and knee implants were widely used for TJA in the past, but complications have led to their decline.
View Article and Find Full Text PDFGastroenterol Clin North Am
March 2025
Department of Gastroenterology, Asian Institute of Gastroenterology, AIG Hospitals, Hyderabad, India. Electronic address:
The endoscopic step-up approach in the management of necrotizing pancreatitis involves sequential steps of intervention at different time points in the clinical course of the disease. EUS -guided drainage of walled-off necrosis is the first step of the endoscopic step-up approach. Lumen-apposing metal stents are preferred over plastic stents for safe and effective drainage because of their wide caliber.
View Article and Find Full Text PDFMicrosc Res Tech
January 2025
Faculty of Dental Medicine, Grigore T. Popa University of Medicine and Pharmacy, Iasi, Romania.
One area of technological advancement has been the shift from stainless steel hand tools to nickel-titanium (Ni-Ti) rotary tools. This paper aims to perform an in vitro comparative study to evaluate the efficacy of five endodontic manual and rotary instruments such as Kerr files, Orodeka Plex V, ProTaper Flydent NiTi super files, and ProTaper Flydent NiTi super files in combination with an ultrasonic endodontic E3D Diamantata EMS scaler used for root canal shaping. The following aspects were highlighted: effective removal of smear layer (SL) from the dentinal tubules in the coronal 1/3, middle 1/3, and apical 1/3 of the root canal, appearance of cracks in the dentinal walls by SEM analysis, and highlighting of dentin mineral content and remnant debris by EDX analysis.
View Article and Find Full Text PDFMicroscopy (Oxf)
January 2025
Faculty of Engineering, Kyushu University, Fukuoka 819-0395, Japan.
Characterizing molten corium-concrete interaction (MCCI) fuel debris in Fukushima reactors is essential to develop efficient methods for its removal. To enhance the accuracy of microscopic observation and focused ion beam (FIB) microsampling of MCCI fuel debris, we developed a three-dimentional FIB scanning electron microscopy (SEM) technique with a multiphase positional misalignment (MPPM) correction method. This system automatically aligns voxel positions, corrects contrast, and removes artifacts from a series of over 500 SEM images.
View Article and Find Full Text PDFBiomimetics (Basel)
January 2025
School of Mechanical Engineering, University of Jinan, Jinan 250022, China.
This research centers around cast steel 20Mn, which is the material utilized for the ear-picking roller of a corn harvester. The study delves into methods of enhancing its hydrophobicity and wear resistance. Fiber laser-processing technology was employed to fabricate pangolin bionic micro-textures on the material surface, and PVD technology was utilized to deposit a TiN coating.
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