Analysis of the effect of tibial torsion on tibial osteotomy in knee arthroplasty using a three-dimensional computed tomography-based modelling technique

Extramedullary systems are commonly used in knee arthroplasty, with the rod location being determined from the tibial torsion line during surgery. The traditional method for tibial torsion measurement is not i...
Source: BMC Musculoskeletal Disorders - Category: Orthopaedics Authors: Tags: Research article Source Type: research

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Subject-specific features can contribute to the susceptibility of an individual to stress fracture. Here, we incorporated tibial morphology and material properties into a standard musculoskeletal finite-element (M/FE) model and investigated how load carriage influences joint kinetics and tibial mechanics in women. We obtained the morphology and material properties of the tibia from computed tomography images for women of three distinctly different heights, 1.51 m (short), 1.63 m (medium), and 1.75 m (tall), and developed individualized M/FE models for each. Then, we calculated joint and muscle forces, and subsequently, tib...
Source: IEEE Transactions on Biomedical Engineering - Category: Biomedical Engineering Source Type: research
Objective: Aneurysm rupture risk can be assessed by its morphologic and hemodynamics features extracted based on angiographic images. Feature extraction entails aneurysm isolation, typically by manually positioning a cutting plane (MCP). To eliminate intra- and inter-rater variabilities, we propose automatic cutting plane (ACP) positioning based on the analysis of vascular surface mesh. Methods: Innovative Hough-like and multi-hypothesis-based detection of aneurysm center, parent vessel inlets, and centerlines were proposed. These were used for initialization and iterative ACP positioning by geometry-inspired cost function...
Source: IEEE Transactions on Biomedical Engineering - Category: Biomedical Engineering Source Type: research
ObjectivesCarotid artery geometry influences blood flow disturbances and is thus an important risk factor for carotid atherosclerosis. Extracellular matrix (ECM) and yes-associated protein (YAP) expression may play essential roles in the pathophysiology of carotid artery stenosis, but the effect of blood flow disturbances of carotid bifurcation location on the ECM is unknown. We hypothesized that carotid artery anatomy and geometry are independently associated with the ECM and YAP expression.MethodsIn this cross-sectional study, 193 patients were divided into two groups: an asymptomatic group (n = 111) and a symptomatic gr...
Source: Frontiers in Physiology - Category: Physiology Source Type: research
The J.P. Morgan Healthcare conference runs every year in San Francisco, a big draw for the biotech industry, and many organizations take the opportunity to host events at the same time. Among these, the SENS Research Foundation has for the past few years hosted a pitch day in which biotech companies in the longevity industry, largely startups, present to that portion of the Bay Area investor community interested in funding the treatment of aging as a medical condition. I was there to present on progress at Repair Biotechnologies, and took some notes on the other companies as they talked about their work. Kimera Labs ...
Source: Fight Aging! - Category: Research Authors: Tags: Investment Source Type: blogs
ConclusionsIn this study, there was no significant enlargement of the orbital rim with increasing age in Koreans. The measurement data in the present study differ from previous studies involving White subjects, which revealed a significant increase in orbital aperture area.
Source: Surgical and Radiologic Anatomy - Category: Anatomy Source Type: research
The occipital bone is often involved in the surgical treatment of basilar invagination (BI). However, the anatomy of the occipital bone associated with BI patients has yet to be investigated.
Source: The Spine Journal - Category: Orthopaedics Authors: Tags: Clinical Study Source Type: research
AbstractBackground There is a limited data on the radiation dose from computed tomography (CT) in patients with acute pancreatitis (AP). The present study evaluated the radiation dose from CT scans in patients with AP.MaterialA retrospective review of CT reports of patients with AP was conducted. The type of CT scan (non-contrast vs. single-phase vs. biphasic CT) was recorded. The mean number of CT scans and cumulative radiation dose was calculated. The indications and abnormalities on biphasic CT scans were recorded. The radiation doses between different types of the scan were compared.Results495 CT studies in 351 patie...
Source: Abdominal Imaging - Category: Radiology Source Type: research
AbstractObjectivesTo assess the prevalence of dental implant-related perforations of relevant anatomical structures and inadequate spacing between the implant and the adjacent tooth or implant, and their association with anatomical location, implant dimension, thread exposure, and presence of graft, using cone beam computed tomography (CBCT).Materials and methodsCBCT scans of patients with implants were retrospectively assessed regarding the presence of implant-related perforation of adjacent anatomical structures, and inadequate mesial and distal spacing between the implant and the adjacent tooth/implant (i.e.,
Source: Clinical Oral Investigations - Category: Dentistry Source Type: research
To compare the performance of Frontier Alberta Stroke Program Early CT Score (ASPECTS) software with different levels of radiologists in assessing computed tomography (CT) examinations of patients with early acute ischaemic stroke (AIS), and to evaluate whether this software can improve the performance of rating by less experienced radiologists.
Source: Clinical Radiology - Category: Radiology Authors: Source Type: research
Publication date: Available online 18 January 2020Source: Journal of Orthopaedic TranslationAuthor(s): Muzhi Li, Yifu Tang, Can Chen, Jiefu Zhou, Cheng Zheng, Huabin Chen, Hongbin Lu, Jin QuAbstractBackgroundMany orthopedic surgical procedures involve reattachment between tendon and bone. Whether bone–tendon healing is better facilitated by tendon fixation on a bone surface or within a tunnel is unknown. The purpose of this study was to comparatively evaluate the effects of bone surface versus bone trough fixation on bone–tendon healing in a rabbit patella–patellar tendon (PPT) injury model.MethodsThe rab...
Source: Journal of Orthopaedic Translation - Category: Orthopaedics Source Type: research
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