PMID: 20632501Jul 17, 2010Paper

Biomechanical research of dynamic sleeve three-wing screw in fixing femoral neck fracture of different angles

Zhongguo xiu fu chong jian wai ke za zhi = Zhongguo xiufu chongjian waike zazhi = Chinese journal of reparative and reconstructive surgery
Yang YangBaoyi Ma

Abstract

To explore the biomechanical stability of dynamic sleeve three-wing screw for treatment of femoral neck fracture and to provide theoretical basis for choosing dynamic sleeve three-wing screw in clinical application. Nine human cadaveric femurs were selected and divided randomly into 3 groups (n = 3), excluding deformities, fractures, and other lesions. The central neck of the specimens were sawn with hand saw respectively at Pauwels angles of 30, 50, and 70 degrees. All cut ends were fixed with dynamic sleeve three-wing screw. Instron-8874 servohydraulic mechanical testing machine was used to fixed the specimens which simulated united standing, at the rate of 10 mm/minute and linear load 0-1200 N at 11 key points. The strain values of principal pressure side and principal tension side under different loads were measured. There was a peak at 6th point in the 1200 N load. The strain values at Pauwels angles of 30, 50, and 70 degrees were (-1657 +/- 171), (-1879 +/- 146), and (-2147 +/- 136) microepsilon; showing significant differences (P < 0.01). The strain values of principal pressure side and principal tension side of the femoral neck became higher with the increasing Pauwels angle under the same load, showing significant diff...Continue Reading

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.

Related Papers

BMC Ophthalmology
Jennifer W H ShumKenneth K W Li
Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
S EberleP Augat
Journal of the College of Physicians and Surgeons--Pakistan : JCPSP
Ahsan Javed ButtHugh U Cameron
© 2021 Meta ULC. All rights reserved