Microdamage accumulation leads to reduced bone strength and fracture. Intact, damaged and Rose Bengal stained cortical bone specimens were studied using SEM and EDXA imaging. SEM coupled with EDXA studies showed selective labelling of surface damage due to binding of dye at free lattice sites. A series of novel iodinated X-ray contrast agent were synthesised. These agents demonstrated excellent stability, water solubility and lack of atropisomerism. Preliminary imaging studies, using cone-beam mu-CT, demonstrated their ability to provide visible contrast in the solid state on bone surfaces.

Download full-text PDF

Source
http://dx.doi.org/10.1016/j.jbiomech.2005.04.003DOI Listing

Publication Analysis

Top Keywords

microdamage bone
4
bone surface
4
surface analysis
4
analysis radiological
4
radiological detection
4
detection microdamage
4
microdamage accumulation
4
accumulation leads
4
leads reduced
4
reduced bone
4

Similar Publications

Overuse injury is a frequent diagnosis in occupational medicine and athletics. Using an established model of upper extremity overuse, we sought to characterize changes occurring in the forepaws and forelimbs of mature female rats (14-18 months of age). Thirty-three rats underwent a 4-week shaping period, before performing a high-repetition low-force (HRLF) task for 12 weeks, with the results being compared to 32 mature controls.

View Article and Find Full Text PDF

Analysis of cutting forces and microdamage during indentation cutting of bone.

J Mech Behav Biomed Mater

December 2024

Department of Mechanical, Manufacturing and Biomedical Engineering, School of Engineering, Trinity College Dublin, Dublin 2, Ireland; Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College Dublin, D02 R590, Dublin, Ireland; Advanced Materials and Bioengineering Research Centre (AMBER), Royal College of Surgeons in Ireland and Trinity College Dublin, Dublin 2, Ireland.

Article Synopsis
  • In surgery, wedge-shaped blades are used to cut bone, but there's little research on how blade shape affects cutting forces and resultant microdamage.
  • The study tested compact bovine bone with various wedge blade geometries, identifying significant relationships between blade angle, edge radius, orientation, cutting force, and microdamage.
  • Results indicated a direct correlation between the cutting force and the level of microdamage, enhancing our understanding of the biomechanics involved in surgical bone cutting.
View Article and Find Full Text PDF
Article Synopsis
  • - Bone stress injuries (BSIs) are overuse injuries that occur when there's repetitive strain on bone, either from excessive physical activity on healthy bone or normal activity on already weakened bone, often seen in younger athletes and those with medical conditions affecting bone density.
  • - Stress fractures are a severe form of BSIs, representing about 20% of cases and show clear signs on imaging; untreated, they can lead to complete fractures, with the main symptoms being localized pain and tenderness in response to increased physical loads.
  • - Treatment involves early intervention, focusing on modifying risk factors like nutrition and activity; imaging such as X-rays and MRIs help confirm BSIs, with management approaches varying based on the injury's severity and location, necessitating specialist
View Article and Find Full Text PDF

Sequential irradiation has been advocated for mitigating the reduction in fatigue properties of tendon compared to a single dose. However, to our knowledge, its capability of mitigating fatigue losses in bone is unknown. Recently, we reported that sequential irradiation did not mitigate losses in high-cycle S-N fatigue life of cortical bone at 15 kGy; however, it is unclear if sequential irradiation provides a benefit to fatigue crack propagation resistance.

View Article and Find Full Text PDF

Objective: Histologically evaluate damage to rabbit femur after the creation of bicortical 1.5-mm-diameter holes using a standard surgical drill bit, an acrylic drill bit, and a Kirschner wire (K-wire).

Methods: 10 femora (5 pairs) from skeletally mature female intact New Zealand white rabbits were used.

View Article and Find Full Text PDF

Want AI Summaries of new PubMed Abstracts delivered to your In-box?

Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!