Investigating the effect of bone mass density and bone implant interface on mandible stress and strain using nonlinear finite elements method

2010 ◽  
Author(s):  
Ehsan Atefi ◽  
Mohammadreza Mallakzadeh
Keyword(s):  
Finite Elements ◽  
Bone Mass ◽  
Mass Density ◽  
Finite Elements Method ◽  
Bone Mass Density ◽  
Stress And Strain ◽  
Bone Implant ◽  
Nonlinear Finite Elements

Age and gender effects on bone mass density variation: finite elements simulation

2016 ◽  
Vol 16 (2) ◽  
pp. 521-535 ◽  
Author(s):  
Abdelwahed Barkaoui ◽  
Rabeb Ben Kahla ◽  
Tarek Merzouki ◽  
Ridha Hambli
Keyword(s):  
Finite Elements ◽  
Bone Mass ◽  
Mass Density ◽  
Density Variation ◽  
Gender Effects ◽  
Bone Mass Density ◽  
Age And Gender ◽  
And Gender ◽  
Finite Elements Simulation

scholarly journals The influence of bone quality on radiological outcome in 50 consecutive acetabular fractures treated with a pre-contoured anatomic suprapectineal plate

2021 ◽  
Author(s):  
Maximilian J. Hartel ◽  
Tareq Naji ◽  
Florian Fensky ◽  
Frank O. Henes ◽  
Darius M. Thiesen ◽  
...  
Keyword(s):  
Total Hip Arthroplasty ◽  
Bone Mass ◽  
Bone Quality ◽  
Hip Arthroplasty ◽  
Mass Density ◽  
Acetabular Fractures ◽  
Bone Mass Density ◽  
Radiological Outcome ◽  
Total Hip ◽  
The Impact

Abstract Purpose To investigate the range of indications of an anatomical-preshaped three-dimensional suprapectineal plate and to assess the impact of the bone mass density on radiologic outcomes in different types of acetabular fractures. Patients and methods A consecutive case series of 50 acetabular fractures (patient age 69 ± 23 years) treated with suprapectineal anatomic plates were analyzed in a retrospective study. The analysis included: Mechanism of injury, fracture pattern, surgical approach, need for additional total hip arthroplasty, intra- or postoperative complications, as well as bone mass density and radiological outcome on postoperative computed tomography. Results Most frequently, anterior column fracture patterns with and without hemitransverse components as well as associated two column fractures were encountered. The anterior intrapelvic approach (AIP) was used in 98% (49/50) of the cases as primary approach with additional utilization of the first window of the ilioinguinal approach in 13/50 cases (26%). Determination of bone density revealed impaired bone quality in 70% (31/44). Postoperative steps and gaps were significantly greater in this subgroup (p < 0.05). Fracture reduction quality for postoperative steps revealed anatomic results in 92% if the bone quality was normal and in 46% if impaired (p < 0.05). In seven cases (14%), the plate was utilized in combination with acute primary arthroplasty. Conclusion A preshaped suprapectineal plate provides good radiological outcomes in a variety of indications in a predominantly geriatric cohort. Impaired bone quality has a significantly higher risk of poor reduction results. In cases with extensive joint destruction, the combination with total hip arthroplasty was a valuable option.

Relationship between bone mass density and tensile strength of the skin in women

2001 ◽  
Vol 31 (8) ◽  
pp. 731-735 ◽  
Author(s):  
G. E. Piérard ◽  
C. Piérard-Franchimont ◽  
S. Vanderplaetsen ◽  
N. Franchimont ◽  
U. Gaspard ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Bone Mass ◽  
Mass Density ◽  
Bone Mass Density

scholarly journals Effect of ghrelin on bone mass density: The InChianti study

Bone ◽  
2011 ◽  
Vol 49 (2) ◽  
pp. 257-263 ◽  
Author(s):  
Nicola Napoli ◽  
Claudio Pedone ◽  
Paolo Pozzilli ◽  
Fulvio Lauretani ◽  
Stefania Bandinelli ◽  
...  
Keyword(s):  
Bone Mass ◽  
Mass Density ◽  
Bone Mass Density

scholarly journals Hypothalamic leptin gene therapy reduces body weight without accelerating age-related bone loss

2015 ◽  
Vol 227 (3) ◽  
pp. 129-141 ◽  
Author(s):  
Russell T Turner ◽  
Michael Dube ◽  
Adam J Branscum ◽  
Carmen P Wong ◽  
Dawn A Olson ◽  
...  
Keyword(s):  
Gene Therapy ◽  
Body Weight ◽  
Bone Loss ◽  
Bone Mass ◽  
Bone Turnover ◽  
Cancellous Bone ◽  
Mass Density ◽  
Female Rats ◽  
Bone Mass Density ◽  
Age Related

Excessive weight gain in adults is associated with a variety of negative health outcomes. Unfortunately, dieting, exercise, and pharmacological interventions have had limited long-term success in weight control and can result in detrimental side effects, including accelerating age-related cancellous bone loss. We investigated the efficacy of using hypothalamic leptin gene therapy as an alternative method for reducing weight in skeletally-mature (9 months old) female rats and determined the impact of leptin-induced weight loss on bone mass, density, and microarchitecture, and serum biomarkers of bone turnover (CTx and osteocalcin). Rats were implanted with cannulae in the 3rd ventricle of the hypothalamus and injected with either recombinant adeno-associated virus encoding the gene for rat leptin (rAAV-Leptin,n=7) or a control vector encoding green fluorescent protein (rAAV-GFP,n=10) and sacrificed 18 weeks later. A baseline control group (n=7) was sacrificed at vector administration. rAAV-Leptin-treated rats lost weight (−4±2%) while rAAV-GFP-treated rats gained weight (14±2%) during the study. At study termination, rAAV-Leptin-treated rats weighed 17% less than rAAV-GFP-treated rats and had lower abdominal white adipose tissue weight (−80%), serum leptin (−77%), and serum IGF1 (−34%). Cancellous bone volume fraction in distal femur metaphysis and epiphysis, and in lumbar vertebra tended to be lower (P<0.1) in rAAV-GFP-treated rats (13.5 months old) compared to baseline control rats (9 months old). Significant differences in cancellous bone or biomarkers of bone turnover were not detected between rAAV-Leptin and rAAV-GFP rats. In summary, rAAV-Leptin-treated rats maintained a lower body weight compared to baseline and rAAV-GFP-treated rats with minimal effects on bone mass, density, microarchitecture, or biochemical markers of bone turnover.

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