Endre søk
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
A new technique for diagnosis of acetabular cup loosening using computed tomography - Preliminary experience in 10 patients
Department of Hand Surgery, Södersjukhuset, Stockholm.
Karolinska Institutet, Department of Clinical Science, Intervention and Technology, Division of Radiology.
Karolinska University Hospital Solna, Department of Orthopedics.
New York University, Department of Radiology. (Nuclear Medicine)
Vise andre og tillknytning
2008 (engelsk)Inngår i: Acta Orthopaedica, ISSN 1745-3674, E-ISSN 1745-3682, Vol. 79, nr 3, s. 346-353Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Background and purpose: Considerable migration of the acetabular cup is required for diagnosis of loosening by conventional radiography. We have developed a new clinically applicable method for assessment of cup loosening using computed tomography (CT). Patients and methods 10 patients scheduled for revision hip replacement due to suspected wear or loosening were scanned twice with CT under torsion loading of the prosthesis. Two independent examiners assessed each patient with respect to motion of the acetabular cup relative to the pelvis using CT volume registration. The CT measurements were compared to findings at revision surgery. Results The method was applicable in 8 of the 10 patients. 1 patient had a severe tremor. In 1 patient, surgery revealed that the hip was ankylotic due to massive ectopic bone formation. This left 8 patients that could be evaluated. 4 cups were loose at surgery, and 3 of these cups could be seen to be mobile by CT. 4 cups that were stable on revision were accurately diagnosed as not being mobile by CT. Movements of less than 1 millimeter between bone and prosthesis could not be distinguished from errors in CT acquisition and volume registration. There was good agreement between the two observers. Interpretation Movement of loose acetabular cups during torsion loading could be detected using CT volume registration. It was sensitive to cup movement in 3 out of 4 cases of loose cups. The method was specific and yielded no false positive results.

sted, utgiver, år, opplag, sider
New York, NY, USA: Informa Healthcare , 2008. Vol. 79, nr 3, s. 346-353
Emneord [en]
total hip-arthroplasty, semiautomated program, component migration, fusion, ct, radiostereometry
HSV kategori
Forskningsprogram
SRA - Informations- och kommunikationsteknik
Identifikatorer
URN: urn:nbn:se:kth:diva-17682DOI: 10.1080/17453670710015247ISI: 000257593200007PubMedID: 18622838Scopus ID: 2-s2.0-47249136549OAI: oai:DiVA.org:kth-17682DiVA, id: diva2:335727
Merknad
QC 20100525Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2020-03-09bibliografisk kontrollert

Open Access i DiVA

Fulltekst mangler i DiVA

Andre lenker

Forlagets fulltekstPubMedScopus

Personposter BETA

Maguire, Gerald Q. Jr.

Søk i DiVA

Av forfatter/redaktør
Maguire, Gerald Q. Jr.
Av organisasjonen
I samme tidsskrift
Acta Orthopaedica

Søk utenfor DiVA

GoogleGoogle Scholar

doi
pubmed
urn-nbn

Altmetric

doi
pubmed
urn-nbn
Totalt: 176 treff
RefereraExporteraLink to record
Permanent link

Direct link
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annet format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annet språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf