Femoral derotational osteotomy level does not effect resulting torsion

Journal of Experimental Orthopaedics
Eric W EdmondsVidyadhar V Upasani

Abstract

The purpose of this study was to assess the effect on femoral torsion by rotational osteotomies at three different levels as measured in 3D using both the mechanical and the anatomic axes. Ten cadaveric lower extremities underwent femoral osteotomies perpendicular to the anatomic axis (AA) at three levels: subtrochanteric, mid-diaphyseal and supracondylar. Parallel pins were placed, one in each femur segment. Computed tomography (CT) was acquired in post-osteotomies neutral position, then post-external rotation of the femur at each osteotomy level. Femurs were returned to neutral rotation between imaging exams. Using 3D CT reconstructions, custom software calculated femoral torsion (angle between the femoral neck axis and the posterior condylar axis in the transverse plane) and pin angle between segments, reoriented to both the mechanical axis (MA) and the AA. Pin angle and torsion change were compared for the three osteotomy locations (regression analysis and ANOVA performed). Two specimens were omitted (inadequate imaging); the remaining eight donors were 55-90 years old (mean: 64 ± 15 years), CT confirmed no bony defects. All three levels of osteotomy demonstrated significant correlations between the amount of rotation at th...Continue Reading

References

Feb 27, 2003·Journal of Pediatric Orthopedics·Robert M KayVernon T Tolo
Apr 8, 2003·The Journal of Bone and Joint Surgery. British Volume·M PirpirisH K Graham
Dec 7, 2005·Clinical Orthopaedics and Related Research·Thomas R TurgeonRichard F Santore
Jul 28, 2013·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·M NelitzS Lippacher
Jun 3, 2014·BMC Musculoskeletal Disorders·Seung Yeol LeeMoon Seok Park
Nov 8, 2014·Journal of Pediatric Orthopedics·William Z MorrisDaniel R Cooperman
Aug 10, 2016·Archives of Orthopaedic and Trauma Surgery·Peter KaiserWerner Schmoelz
Sep 17, 2016·Journal of Pediatric Orthopedics·Jeffrey B StamboughJ Eric Gordon
Oct 28, 2017·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Corey B FullerVidyadhar V Upasani
Feb 7, 2018·The Journal of Bone and Joint Surgery. American Volume·Matthew J KraeutlerOmer Mei-Dan
May 8, 2018·Developmental Medicine and Child Neurology·Mirjam NiklaschMichael Schwartz

❮ Previous
Next ❯

Software Mentioned

SPSS
Mimics
MATLAB

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.