PMID: 9160941May 1, 1997Paper

Digital edge-detection measurement of polyethylene wear after total hip arthroplasty

The Journal of Bone and Joint Surgery. American Volume
S M ShaverJ J Callaghan

Abstract

A novel digital edge-detection computer technique was developed to measure polyethylene wear after total hip arthroplasty. The new method objectively infers the margins of the component by evaluating gradients of gray-scale intensity on digitized images of the radiographs. Compared with previous methods for measurement of wear, digital edge detection substantially reduces observer subjectivity. The technique was validated directly by measuring wear artificially produced by spherical-front milling of polyethylene liners in a benchtop series. Under such conditions, digital edge detection proved 6.4 times more accurate and 7.1 times more reproducible than manual measurement with conventional circular templates. In addition, clinical application of the new digital imaging technique was illustrated in a series of forty-three patients in whom a metal-backed acetabular cup had been inserted with cement. A random-coefficients prediction algorithm was invoked to estimate long-term wear (mean late rate of wear for the cohort, 0.087 millimeter per year at a mean of 118 months after the operation) on the basis of measurements of short-term wear (mean early rate of wear for the cohort, 0.154 millimeter per year at a mean of twenty-four mont...Continue Reading

Citations

Sep 8, 1998·The Journal of Bone and Joint Surgery. American Volume·T P SchmalzriedH McKellop
Feb 11, 1999·The Journal of Bone and Joint Surgery. American Volume·T P Schmalzried, J J Callaghan
Dec 28, 1999·Clinical Orthopaedics and Related Research·P A Devane, J G Horne
Dec 4, 2002·Clinical Orthopaedics and Related Research·John J CallaghanRichard C Johnston
Dec 12, 2003·The Journal of Bone and Joint Surgery. American Volume·Edward EbramzadehLawrence D Dorr
Feb 27, 2007·The Journal of Bone and Joint Surgery. British Volume·G S J ChuterS M Green
Aug 11, 2007·Journal of Neurosurgery. Spine·Jeremy J RawlinsonTimothy M Wright
Jan 1, 2009·Acta Orthopaedica. Supplementum·Maiken Stilling
Sep 24, 2010·Acta Orthopaedica·Eric VandenbusscheThomas M Gregory
Apr 10, 2013·Clinical Orthopaedics and Related Research·Ryan K TakenagaYubo Gao
Apr 9, 2014·Clinical Orthopaedics and Related Research·Daniel J BerryUNKNOWN Members of the Clinical Research Group
Jun 5, 2003·The Journal of Bone and Joint Surgery. American Volume·Jay D KeenerRichard C Johnston
Dec 12, 2003·The Journal of Bone and Joint Surgery. American Volume·Matthew B CollierVictor M Goldberg
Nov 10, 2001·The Journal of Bone and Joint Surgery. American Volume·J E TempletonR C Johnston
Feb 12, 2008·Clinical Orthopaedics and Related Research·Bertram TheNico Verdonschot
Jan 16, 2008·Clinical Orthopaedics and Related Research·Sophie WilliamsJohn Older
Feb 22, 2000·The Journal of Bone and Joint Surgery. American Volume·G Lewis
Feb 25, 2003·Journal of Biomechanical Engineering·Thomas D BrownJohn J Callaghan
May 12, 2001·Clinical Orthopaedics and Related Research·C J SychterzC A Engh
Jul 19, 2005·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Charles R BragdonWilliam H Harris
Feb 5, 2008·The Journal of Bone and Joint Surgery. American Volume·John J CallaghanRichard C Johnston
Apr 8, 2004·The Journal of Bone and Joint Surgery. American Volume·John J CallaghanRichard C Johnston
Jan 20, 2009·BMC Musculoskeletal Disorders·Tai-Yin WuChen-Kun Liaw
Feb 3, 2012·The Journal of Bone and Joint Surgery. American Volume·Michael D SteflRichard C Johnston
May 31, 2012·Clinical Orthopaedics and Related Research·William H Harris
Jul 3, 2009·The Journal of Bone and Joint Surgery. American Volume·Aaron J AltenburgRichard C Johnston
Apr 12, 2008·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Damien BennettDavid E Beverland
Apr 29, 2009·Clinical Orthopaedics and Related Research·Thomas D BrownJohn J Callaghan
Nov 10, 2012·The Journal of Bone and Joint Surgery. American Volume·Bryan N TrummRichard C Johnston
Jun 14, 2013·Hip International : the Journal of Clinical and Experimental Research on Hip Pathology and Therapy·Laura Grillini, Saverio Affatato
Dec 28, 1999·Clinical Orthopaedics and Related Research·J J CallaghanD R Pedersen
Nov 20, 1998·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·D R PedersenJ J Callaghan
Aug 23, 2000·The Journal of Bone and Joint Surgery. American Volume·J E DowdC A Engh
Jun 5, 2003·The Journal of Bone and Joint Surgery. American Volume·John M MartellJoshua Jacobs
Jan 22, 2005·Clinical Orthopaedics and Related Research·William H Harris, Orhun K Muratoglu
Jan 4, 2007·The Journal of Bone and Joint Surgery. American Volume·Daniel E FirestoneRichard C Johnston
Aug 17, 2011·Archives of Orthopaedic and Trauma Surgery·Antonio MoroniPietro Apostoli
Jan 6, 2006·Clinical Orthopaedics and Related Research·Bertram TheNico Verdonschot
Feb 1, 2017·Journal of Orthopaedic Surgery·Christopher John Vertullo, Manickaraj Nagarajan
Dec 12, 2012·The Journal of Bone and Joint Surgery. American Volume·Ryan K TakenagaDouglas R Pedersen
Jun 13, 2001·The Journal of Arthroplasty·C J LaverniaK Krackow

❮ 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.