Femoral head lag screw position for cephalomedullary nails: a biomechanical analysis

Journal of Orthopaedic Trauma
Paul R T KuzykEmil H Schemitsch

Abstract

The purpose of this study was to determine if lag screw position affects the biomechanical properties of a cephalomedullary nail used to fix an unstable peritrochanteric fracture. Unstable peritrochanteric fractures were created in 30 synthetic femurs and repaired with Long Gamma 3 Nails using one of 5 lag screw positions: superior, inferior, anterior, posterior, or central. Radiographic measurements including tip-apex distance and a calcar referenced tip-apex distance were calculated from anteroposterior and lateral radiographs. Specimens were tested for axial, lateral bending, and torsional stiffness and then loaded to failure in the axial position. Analysis of variance and linear regression were used for statistical analysis. The inferior lag screw position had significantly greater mean axial stiffness than superior (P < 0.01), anterior (P = 0.02), and posterior (P = 0.04) positions. Analysis revealed significantly less mean torsional stiffness for the superior lag screw position compared with other lag screw positions (P < 0.01 all 4 pairings). No statistical differences were noted for lateral bending stiffness. Superior and central lag screw positions had significantly greater mean load-to-failure than anterior (P < 0.01 ...Continue Reading

References

Jul 1, 1992·The Journal of Bone and Joint Surgery. British Volume·M J Parker
Jan 1, 1991·Injury·A P Thomas
Mar 1, 1972·Journal of Biomechanics·E F RybickiE B Weis
Jul 1, 1995·The Journal of Bone and Joint Surgery. American Volume·M R BaumgaertnerJ M Keggi
Apr 1, 1996·Journal of Biomechanics·L CristofoliniA Toni
Jul 27, 2001·Journal of Biomechanics·A D Heiner, T D Brown
Mar 24, 2004·Medical Engineering & Physics·G CheungM Papini
Sep 8, 2004·Injury·Humayon PervezSarah Vowler
Nov 2, 2004·Archives of Orthopaedic and Trauma Surgery·Beatrix Hesse, Andrè Gächter
Jan 1, 2008·Injury·Max TalbotEmil H Schemitsch
Apr 3, 2008·The Journal of Bone and Joint Surgery. American Volume·Jeffrey O AnglenUNKNOWN American Board of Orthopaedic Surgery Research Committee
May 3, 2008·The Journal of Bone and Joint Surgery. American Volume·Rad ZderoEmil H Schemitsch
May 13, 2008·The Journal of Trauma·Max TalbotEmil H Schemitsch
Oct 22, 2008·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·J HeineyG Vrabec
Sep 4, 2009·Journal of Biomechanical Engineering·Rad ZderoEmil H Schemitsch

❮ Previous
Next ❯

Citations

Feb 1, 2013·Journal of Biomechanical Engineering·Troy MacAveliaRad Zdero
Dec 11, 2013·Proceedings of the National Academy of Sciences of the United States of America·Ingrid A van de LeemputMarten Scheffer
Apr 25, 2014·Clinical Orthopaedics and Related Research·Patrick KaneChristopher Born
Aug 25, 2015·Injury·Theodoros H TosounidisPeter V Giannoudis
Apr 4, 2016·Journal of Orthopaedic Surgery and Research·Julia HenschelPeter Augat
May 2, 2015·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Marc A MüllerNorbert Suhm
Aug 3, 2014·The Bone & Joint Journal·A KashigarP R T Kuzyk
Dec 10, 2013·Journal of Biomechanics·Sean D SmithCoen A Wijdicks
Mar 25, 2014·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Lin JinYingze Zhang
Jun 18, 2016·Case Reports in Orthopedics·S van HoefR H M Ten Broeke
Nov 29, 2012·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Radovan ZderoDouglas D R Naudie
Mar 23, 2013·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Shahryar AhmadiRad Zdero
Jun 12, 2017·Journal of the Chinese Medical Association : JCMA·Shang-Wen TsaiChao-Ching Chiang
Dec 20, 2012·Journal of Orthopaedic Trauma·Ramanan SivasundaramRad Zdero
Sep 21, 2019·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·C KokoroghiannisD Evangelopoulos
Nov 20, 2015·Journal of Orthopaedic Trauma·Steven A OlsonLoren L Latta
Apr 18, 2017·Experimental and Therapeutic Medicine·Chen YiXiaoguang Cheng
Mar 9, 2019·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Chul-Ho KimJi Wan Kim
Oct 2, 2019·Singapore Medical Journal·Raghavan RaghuramanDavid Thai Chong Chua
Dec 24, 2017·Archives of Orthopaedic and Trauma Surgery·Luigi MurenaGianluca Canton
Jan 15, 2021·Orthopaedics & Traumatology, Surgery & Research : OTSR·Serhat DurusoyFatma Kübra Erbay Elibol
May 21, 2021·BMC Musculoskeletal Disorders·Jin MeiZhongchao Jiang
Jun 20, 2021·Archives of Orthopaedic and Trauma Surgery·Şahin ÇepniKasım Kılıçarslan

❮ 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.