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Automatic segmentation of cortical bone microstructure: Application and analysis of three proximal femur sites.
Bone
January 2025
ARTORG Centre for Biomedical Engineering Research, University of Bern, Bern, Switzerland.
Osteoporosis is the most common bone metabolic unbalance, leading to fragility fractures, which are known to be associated with structural changes in the bone. Cortical bone accounts for 80 % of the skeleton mass and undergoes remodeling throughout life, leading to changes in its thickness and microstructure. Although many studies quantified the different cortical bone structures using CT techniques (3D), they are often realised on a small number of samples.
View Article and Find Full Text PDFLingual osteoma: A case report.
Int J Surg Case Rep
December 2024
Department of Pathology, Faculty of Medicine, Bushehr University of Medical Sciences, University of Bushehr, Bushehr, Iran.
Introduction And Importance: Lingual osteoma is a rare benign osteogenic tongue tumor. Osteomas usually arise from craniofacial bones and are rare in the intraoral region.
Case Presentation: The tongue mass of a 20-year-old Persian woman with a history of several years of lump sensation was removed, and the histological examination confirmed the diagnosis of osteoma.
Multiscale interstitial fluid computation modeling of cortical bone to characterize the hydromechanical stimulation of lacunar-canalicular network.
Bone
December 2024
College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, China.
Bone tissue is a biological composite material with a complex hierarchical structure that could continuously adjust its internal structure to adapt to the alterations in the external load environment. The fluid flow within bone is the main route of osteocyte metabolism, and the pore pressure as well as the fluid shear stress generated by it are important mechanical stimuli perceived by osteocytes. Owing to the irregular multiscale structure of bone tissue, the fluid stimulation that lacunar-canalicular network (LCN) in different regions of the tissue underwent remained unclear.
View Article and Find Full Text PDFMorphology and spatial distribution of cortical bone canals: Evaluation of shape parameters, lacunarity, and fractal dimension in the human irradiated mandible.
Bone
March 2025
Department of Dentistry, Federal University of Santa Catarina, Florianópolis, SC, Brazil; Hospital Dentistry Service, Professor Polydoro Ernani de São Thiago University Hospital, Federal University of Santa Catarina, Florianópolis, Brazil. Electronic address:
This study aimed to assess the spatial distribution of cortical bone canals' network through the analysis of lacunarity (Lac), fractal dimension (FD), and canal morphological parameters in the mandible (IR group, n = 7) of human patients under radiotherapy in comparison with non-irradiated younger (yC group, n = 8) and older (oC group, n = 8) individuals. Patients who underwent mandibular surgery were selected to have bone fragments removed during surgery, and undecalcified histological slides were analyzed by phase-contrast microscopy by two operators. The following morphological parameters were assessed in the Haversian canal (Ca): area (Ca·Ar, μm), perimeter (Ca·Pm, μm), and circularity (Ca.
View Article and Find Full Text PDFRed deer (Cervus elaphus) antler myiasis caused by Prochyliza nigrimanus (Meigen 1826).
Parasitol Res
November 2024
Faculty of Veterinary Medicine, University of Zagreb, Heinzelova 55, 10000, Zagreb, Croatia.
Article Synopsis
- Antlers are unique mammalian structures that can fully regenerate and were sampled from a red deer stag for analysis after shedding.
- The study involved various staining techniques applied to the antler samples to examine the ossification process and the presence of larvae.
- The findings identified Prochyliza nigrimanus as the species of larvae present in the antlers, marking the first recorded instance of this species in hard red deer antlers in Croatia.
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