Sign in to use this feature.

Years

Between: -

Subjects

remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline
remove_circle_outline

Journals

Article Types

Countries / Regions

Search Results (3)

Search Parameters:
Keywords = osseous landmark

Order results
Result details
Results per page
Select all
Export citation of selected articles as:
11 pages, 1666 KiB  
Article
Imaging Retrospective Study Regarding the Variability of the Osseous Landmarks for IAN Block
by Andrei Urîtu, Ciprian Roi, Alexandra Roi, Alexandru Cătălin Motofelea, Ioana Badea, Doina Chioran and Mircea Riviș
J. Clin. Med. 2025, 14(2), 636; https://doi.org/10.3390/jcm14020636 - 19 Jan 2025
Viewed by 960
Abstract
Background/Objectives: The aim of this study is to identify the most accurate and consistent landmarks for determining the precise location of the mandibular foramen (MF) and the mandibular ramus, suggesting appropriate adjustments to anesthesia techniques based on these variations in order to [...] Read more.
Background/Objectives: The aim of this study is to identify the most accurate and consistent landmarks for determining the precise location of the mandibular foramen (MF) and the mandibular ramus, suggesting appropriate adjustments to anesthesia techniques based on these variations in order to improve the success rate of the inferior alveolar nerve (IAN) block. Methods: CT scans of the mandibles from 100 patients were analyzed to measure the distance between the MF and various landmarks, including the sigmoid notch, gonion, posterior and anterior margins of the ramus, temporal crest, and the mandibular ramus height from the condyle to the gonion. The width of the mandibular ramus was also assessed, with correlations made to age and gender. Results: The MF was found to be closer to the sigmoid notch (mean = 21.2 mm), p = 0.393, than to the gonion (mean = 22.6 mm), p = 0.801, and closer to the posterior margin of the ramus (mean = 13.1 mm), p = 0.753, than to the anterior margin of the ramus. Additionally, the MF was closer to the temporal crest. Age also influenced the position of the MF, with a posterior and superior movement of the foramen, reducing the distance between the MF and the posterior margin of the ramus as well as the MF and the sigmoid notch (p < 0.001). Conclusions: A precise understanding of the MF’s location will help dentists and oral and maxillofacial surgeons improve the success of the IAN block, avoid injury to the inferior alveola neurovascular bundle, and minimize surgical complications such as paresthesia, permanent anesthesia, and hemorrhage. Full article
(This article belongs to the Special Issue Oral and Maxillofacial Surgery: Current Updates and Perspectives)
Show Figures

Figure 1

11 pages, 10669 KiB  
Article
Feasibility of Osseous Landmarks for ACL Reconstruction—A Macroscopic Anatomical Study
by Lena Hirtler, Dominik Rieschl, Sam A. Kandathil and Patrick Weninger
Appl. Sci. 2023, 13(12), 7345; https://doi.org/10.3390/app13127345 - 20 Jun 2023
Viewed by 1703
Abstract
During knee arthroscopy, easy orientation is important, and possible landmarks include the lateral intercondylar ridge (LIR) and the lateral bifurcate ridge (LBR). The objective was to show the feasibility of the LIR and the LBR as landmarks of the femoral attachment of the [...] Read more.
During knee arthroscopy, easy orientation is important, and possible landmarks include the lateral intercondylar ridge (LIR) and the lateral bifurcate ridge (LBR). The objective was to show the feasibility of the LIR and the LBR as landmarks of the femoral attachment of the anterior cruciate ligament (ACL) among subjects with different levels of training. Thirty-six formalin-phenol-fixed lower extremities were acquired for this prospective macroscopic anatomical study. All soft tissue apart from the ligaments was removed. The two bundles of the ACL and their origins were identified, marked and photographed. Photographs were taken in an arthroscopic setting. An orthopedic surgeon, an anatomist and a medical student identified the ridges. The LIR existed in 80.6% of samples, while the LBR existed in 13.8% of samples. A significant difference existed between the raters in correctly identifying the LIR (p < 0.01). Due to its high frequency, the LIR seems more reliable than the LBR, especially as the LBR has the potential for false positive identification. Nevertheless, as these ridges are not easily discernible, the surgeon has to know the anatomy of the intercondylar notch perfectly to stand even a small chance of correctly placing drill holes in ACL reconstruction. New guidelines for more easily recognizing LIR and LBR arthroscopically are proposed. Full article
Show Figures

Figure 1

17 pages, 4562 KiB  
Article
Optical Coherence Tomography-Based Atlas of the Human Cochlear Hook Region
by Lore Kerkhofs, Anastasiya Starovoyt, Jan Wouters, Tristan Putzeys and Nicolas Verhaert
J. Clin. Med. 2023, 12(1), 238; https://doi.org/10.3390/jcm12010238 - 28 Dec 2022
Cited by 5 | Viewed by 2961
Abstract
Advancements in intracochlear diagnostics, as well as prosthetic and regenerative inner ear therapies, rely on a good understanding of cochlear microanatomy. The human cochlea is very small and deeply embedded within the densest skull bone, making nondestructive visualization of its internal microstructures extremely [...] Read more.
Advancements in intracochlear diagnostics, as well as prosthetic and regenerative inner ear therapies, rely on a good understanding of cochlear microanatomy. The human cochlea is very small and deeply embedded within the densest skull bone, making nondestructive visualization of its internal microstructures extremely challenging. Current imaging techniques used in clinical practice, such as MRI and CT, fall short in their resolution to visualize important intracochlear landmarks, and histological analysis of the cochlea cannot be performed on living patients without compromising their hearing. Recently, optical coherence tomography (OCT) has been shown to be a promising tool for nondestructive micrometer resolution imaging of the mammalian inner ear. Various studies performed on human cadaveric tissue and living animals demonstrated the ability of OCT to visualize important cochlear microstructures (scalae, organ of Corti, spiral ligament, and osseous spiral lamina) at micrometer resolution. However, the interpretation of human intracochlear OCT images is non-trivial for researchers and clinicians who are not yet familiar with this novel technology. In this study, we present an atlas of intracochlear OCT images, which were acquired in a series of 7 fresh and 10 fresh-frozen human cadaveric cochleae through the round window membrane and describe the qualitative characteristics of visualized intracochlear structures. Likewise, we describe several intracochlear abnormalities, which could be detected with OCT and are relevant for clinical practice. Full article
(This article belongs to the Special Issue Innovative Technologies and Translational Therapies for Deafness)
Show Figures

Figure 1

Back to TopTop