A sliding hip screw augmented with 2 screws is biomechanically similar to an inverted triad of cannulated screws in repair of a Pauwels type-III fracture

Injury
B KemkerT Atkinson

Abstract

Pauwels III femoral neck fractures are highly unstable. These fractures are commonly treated with three cannulated screws or sliding hip screw (SHS) implants, however high rates of non-union persist. A hybrid SHS construct has recently been proposed. The objective of the study was to compare this construct to the familiar inverted triad of cannulated screws and to a single SHS. Fourth generation biomechanical femur analogs were used to create a highly repeatable injury model. The hybrid SHS construct contained a SHS with two superior cannulated screws in an inverted triangle configuration. Eight samples for each construct were biomechanically evaluated and the results compared using ANOVA (p<0.05). The cannulated triad and hybrid SHS provided similar stiffness and fracture gap motion. The single SHS exhibited significantly lower stiffness and larger fracture plane diastasis than either the inverted triangle of cannulated screws or hybrid SHS (p<0.05). None of the constructs exhibited catastrophic failure during cyclic loading nor under loading up to 2.5 times body weight. The single SHS provided the least stable fracture fixation, while the inverted triad and hybrid SHS constructs were mechanically similar. The fracture repair ...Continue Reading

References

Aug 1, 1976·The Journal of Bone and Joint Surgery. British Volume·J D'Arcy, M Devas
Nov 1, 1989·The Journal of Bone and Joint Surgery. British Volume·R K MartiE L Raaymakers
Dec 1, 1994·The Journal of Bone and Joint Surgery. American Volume·S E Asnis, L Wanek-Sgaglione
Apr 8, 1998·The Journal of Bone and Joint Surgery. American Volume·K J KovalJ D Zuckerman
May 1, 1994·The Journal of the American Academy of Orthopaedic Surgeons·K J Koval, J D Zuckerman
Jun 19, 2001·Journal of Biomechanics·G BergmannG N Duda
Aug 1, 1959·The Journal of Bone and Joint Surgery. British Volume·R A DENHAM
Dec 17, 2003·Journal of Orthopaedic Trauma·Erik N KubiakKenneth J Koval
Sep 7, 2007·Journal of Orthopaedic Trauma·Arash AminianBradley R Merk
Oct 3, 2008·Journal of Biomechanics·Anneliese D Heiner
Jun 25, 2009·Journal of Orthopaedic Trauma·Mohit BhandariMarc F Swiontkowski
Jan 6, 2010·Annals of Biomedical Engineering·Matthew P GardnerPaul H Wooley
Jan 20, 2011·Journal of Orthopaedic Trauma·Philip J Glassner, Nirmal C Tejwani
Dec 10, 2013·Journal of Biomechanics·Sean D SmithCoen A Wijdicks
Apr 23, 2014·Journal of Orthopaedic Trauma·Benjamin JohnsonPhillip J Roberts
Jul 19, 2014·World Journal of Orthopedics·Thierry PauyoEdward J Harvey
Jul 30, 2014·Journal of Orthopaedic Trauma·Sarat C KunapuliRenn J Crichlow
Sep 24, 2014·Acta ortopedica brasileira·Anderson FreitasPatrick Fernandes Godinho
Oct 21, 2014·Acta ortopedica brasileira·Anderson FreitasMarcelo De Almeida Ferrer
Dec 7, 2014·Injury·G P SlobogeanM Bhandari
Dec 23, 2014·Injury·G P SlobogeanM Bhandari

❮ Previous
Next ❯

Citations

Feb 21, 2018·Journal of Orthopaedic Trauma·Michael BottlangEmil H Schemitsch
Dec 13, 2018·Journal of Orthopaedic Trauma·Peter AugatSimon Hackl
Feb 5, 2019·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Afgan JafarovTeyfik Demir
Feb 15, 2020·The Journal of International Medical Research·Gang WangHuilin Yang
Mar 13, 2020·Computer Methods in Biomechanics and Biomedical Engineering·M CordeiroT Atkinson

❮ Previous
Next ❯

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.