To determine the usefulness of sheep cadaver ear as a complementary model for training of stapedectomy at residency programs, 2 of our 4 year residents were included in the study and each operated 20 sheep ears. All routine steps of stapedectomy operation were performed, and their success and complication scores were recorded. Performance of residents for stapedectomy and teflon piston placement in sheep ears were evaluated by the authors. Success of both residents improved progressively. Success and complications were impressively better in the second 10 ears than the initial 10 for each resident. Both residents had better outcomes in last 10 ears. Sheep cadaver ear is an excellent model for stapedectomy training in residency and helps to improve surgical skills. We offer sheep cadaver ear training model especially in the countries where obtaining human cadaver temporal bone is difficult.
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http://dx.doi.org/10.1007/s00405-007-0437-3 | DOI Listing |
Background: Navigation surgical systems have been widely used in spinal fusion to ensure accuracy and safety during pedicle screw insertion.
Methods: The research was performed under laboratory conditions, using stereotactic navigation, surgical instruments for spinal fusion, development of additional devices and software. During the experiments, all stages of the computed tomography-guided navigation system use were performed-preoperative preparation of patient data and planning to provide visual control of the navigation of surgical instruments during the insertion of screws.
Forensic Sci Int
January 2025
Department of Restorative Dentistry and Endodontics, Semmelweis University, Budapest, Hungary. Electronic address:
Intraoral scanning of the palate is considered reliable for human identification; however, its accuracy on postmortem tissue remains dubious. This study aimed to investigate the effect of tissue decomposition on the precision of the intraoral scanner and the deviation of the scan. Ten fresh lamb (Ovies aries) maxillae were either unwashed or washed, selected, and stored at 20.
View Article and Find Full Text PDFAnn Plast Surg
December 2024
From the Division of Plastic Surgery, Department of Surgery, University of Rochester, Rochester, NY.
Purpose: The use of "mesh" in implant-based reconstruction is widespread, with both acellular dermal matrices (ADMs) and extracellular matrices (ECMs) being used, especially in prepectoral device placement. This study compared Ovitex (ovine ECM) versus human cadaveric ADMs to determine safety profiles and cost-effectiveness.
Methods: A single surgeon's longitudinal experience with 2-stage, immediate tissue expander breast reconstruction from 2018 to 2023 was analyzed.
Innovation in image-guided procedures has been driven by advances in robotic Cone Beam Computed Tomography (CBCT) systems. A fundamental challenge for CBCT imaging is metal artifacts arising from surgical tools and implanted hardware. Here, we outline how two universal non-circular imaging orbits, optimized for metal artifact reduction, can be implemented in real-time on clinical robotic CBCT systems.
View Article and Find Full Text PDFEur J Radiol
December 2024
Centre for Medical Image Science and Visualization, CMIV, Linköping University, Linköping, Sweden; Department of Medical Radiation Physics, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden. Electronic address:
Background: Accurate diagnostic imaging is crucial for managing facial fractures, which are a common global occurrence. This study aimed to compare the image quality of Photon Counting Detector CT (PCD-CT) with state-of-the-art Energy Integrating Detector CT (EID-CT) and intraoperative C-arm CBCT (CBCT) in visualizing maxillofacial anatomy using a cadaveric sheep head model.
Methods: Three fresh sheep heads were used, with surgical interventions simulating metal implants in two of them.
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