This study demonstrates sexual dimorphism in feline bones based on morphometric analysis of dried flat bones (scapula and os coxa) and long bones (humerus, radius, ulna, femur, tibia, and fibula) of 92 felines (50 male, 42 female). A total of 58 parameters (flat bones: scapula = 4 and os coxa = 7; long bones: humerus = 8, radius = 9, ulna = 10, femur = 9, tibia = 7, and fibula = 4) were measured using a digital vernier caliper. Twenty-three parameters were found to be significantly different between cats of different sexes and skull shapes. The correlation between the cephalic index and most parameters was negative. Analysis of bone morphometry enabled us to estimate both sex and skull shape with accuracy of up to 96 % and 71 %, respectively, through a stepwise logistic regression model and a stepwise discriminative analysis model. The stepwise logistic regression model was determined to be most suitable for classifying two categories of data and had higher prediction accuracy rate.
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http://dx.doi.org/10.1007/s12565-019-00480-8 | DOI Listing |
J Funct Biomater
December 2024
Adult Spine Orthopaedics Department, W. Dega Orthopaedic and Rehabilitation Clinical Hospital, Poznan University of Medical Sciences, 28 Czerwca 1956 Street 135/147, 61-545 Poznan, Poland.
The prototype of a biomimetic multi-spiked connecting scaffold (MSC-Scaffold) represents an essential innovation in the fixation in subchondral trabecular bone of components for a new generation of entirely cementless hip resurfacing arthroplasty (RA) endoprostheses. In designing such a functional biomaterial scaffold, identifying the microstructural and mechanical properties of the host bone compromised by degenerative disease is crucial for proper post-operative functioning and long-term maintenance of the endoprosthesis components. This study aimed to explore, depending on the occurrence of obesity, changes in the microstructure and mechanical properties of the subchondral trabecular bone in femoral heads of osteoarthritis (OA) patients caused by the MSC-Scaffold embedding.
View Article and Find Full Text PDFObjective: Aim: The aim of this study is to determine the dynamics of histoarchitectural changes in the bone-ceramic regenerate after transplantation β-tricalcium phosphate into an experimental defect in the rabbit mandible.
Patients And Methods: Materials and Methods: Adult male rabbits aged 6-7 months and weighing 2.5-3 kg were used for the study.
Anat Histol Embryol
January 2025
Department of Anatomy, Faculty of Veterinary Medicine, Dokuz Eylül University, İzmir, Turkey.
The aim of the study was to investigate the shape of the mandible in Wistar albino rats using the geometric morphometric method. However, 'Is the shape of the mandible different in rats depending on gender?' the question formed the hypothesis of the study. For this purpose, a total of 52 rat mandibles, 31 female and 21 male rats, were used in the study.
View Article and Find Full Text PDFJ Hand Surg Glob Online
November 2024
Christine M. Kleinert Institute for Hand and Microsurgery, Louisville, KY.
Purpose: This case series presents four cases of periprosthetic ulna fractures following Aptis distal radioulnar joint (DRUJ) arthroplasty to elucidate clinical characteristics, contributing factors, management challenges, and short-term outcomes following this rare complication and to propose prevention and optimal treatment strategies.
Methods: We conducted a retrospective review of 239 Aptis DRUJ prostheses implanted between 2012 and 2022 at a single institution. We identified four cases of periprosthetic ulna fractures and assessed demographics, surgical indications, time to fracture, mechanism of injury, radiographic findings, treatment modalities, associated complications, and outcomes.
Research on serotonin reveals a lack of consensus regarding its role in brain volume, especially concerning biomarkers linked to neurogenesis and neuroplasticity, such as ciliary neurotrophic factor (CNTF), fibroblast growth factor 4 (FGF-4), bone morphogenetic protein 6 (BMP-6), and matrix metalloproteinase-1 (MMP-1) in Alzheimer's disease (AD). This study aimed to investigate the influence of serotonin on brain structure and hippocampal volumes in relation to cognitive functions in AD, as well as its link with biomarkers like CNTF, FGF-4, BMP-6, and MMP-1. Data from 133 ADNI participants with AD included cognitive assessments (CDR-SB), serotonin measurements (Biocrates AbsoluteIDQ p180 kit, UPLC-MS/MS), and neurotrophic factors quantified via multiplex proteomics.
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