liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
No difference in migration or wear between cemented low-profile cups and standard cups. A randomized radiostereographic study of 53 patients over 3 years
Linköping University, Department of Clinical and Experimental Medicine, Orthopaedics and Sports Medicine . Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Orthopaedic Centre, Department of Orthopaedics Linköping.
Departments of Orthopaedic Surgery, Central Hospital Norrköping, Sweden.
Departments of Orthopaedic Surgery, Central Hospital Norrköping, Sweden.
Linköping University, Department of Clinical and Experimental Medicine, Orthopaedics and Sports Medicine . Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Orthopaedic Centre, Department of Orthopaedics Linköping.
2007 (English)In: Acta Orthopaedica, ISSN 1745-3674, Vol. 78, no 4, 479-484 p.Article in journal (Refereed) Published
Abstract [en]

Background: Minor design changes may cause major changes in implant performance. Thus, as part of a stepwise introduction of a new low-profile cup, we performed a randomized trial comparing it to a well-docu-mented standard cup.

Patients and methods: 60 patients, stratified according to sex, weight, and age, underwent cemented total hip arthroplasty using a Lubinus SP2 stem with ceramic head and were randomized to either the new low-profile Lubinus Flanged Anti-Luxation cup (FAL) or the Lubinus Standard Eccentric cup (Standard). 7 patients were excluded and 53 (28 FAL) were evaluated at 3, 6, 12, and 36 months postoperatively. Primary outcome variables, cup migration (MTPM), and wear (total 3-dimensional femoral head penetration) were measured with radiostereometry (RSA). Clinical outcome was evaluated with the western Ontario and McMaster osteoarthritis index (Womac) and the visual analog pain score (VAS).

Results: We found no difference in migration between the FAL and Standard cups. There was no difference in wear between the two cups and there was no correlation between wear and migration. 3 cups (2 FAL and 1 Standard) showed continuous migration of a magnitude that indicated an increased risk of early loosening. Clinical outcome was excellent, without any difference between the 2 groups.

Place, publisher, year, edition, pages
2007. Vol. 78, no 4, 479-484 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-12811DOI: 10.1080/17453670710014112OAI: oai:DiVA.org:liu-12811DiVA: diva2:17099
Available from: 2007-11-28 Created: 2007-11-28 Last updated: 2009-08-20
In thesis
1. On Fixation of Hip Prostheses
Open this publication in new window or tab >>On Fixation of Hip Prostheses
2007 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis, comprising 5 separate studies, is concerned with fixation of prosthetic components in total hip arthroplasty. The results and conclusions of the studies fol-low;

The initial stability of femoral revision components, the long cementless PCA stem and the Exeter standard stem cemented in a bed of impacted bone graft, was com-pared in an experimental study. The PCA stem was more stable than the Exeter stem. However, for both stems initial stability may not be sufficient to allow bone ingrowth. Initial fixation is especially vulnerable to torsion.

Identical femoral stems with or without HA-coating were compared in a prospec-tive randomized clinical trial. The long-term stable fixation of a cementless Link RS femoral component was improved by application of hydroxyapatite coating to the femoral stem.

In a clinical study the method of extensive impaction of morsellized bone allograft and a hydroxyapatite-coated cementless Mallory-Head acetabular component was found to be advantageous for acetabular revision in the presence of contained or acetabular wall defects. The limited contact between the HA-coated implant and living host bone did not seem to compromise long-term stable fixation.

Two different cup designs were compared in a prospective randomized RSA study. At 3 years after implantation the cemented low profile Lubinus FAL cup performed as well as the cemented Lubinus Standard cup in terms of migration and polyethyl-ene wear.

In a study of the relationship between radiolucent lines and migration the Lubinus FAL cup displayed more radiolucent lines in the cement bone interface than the Lubinus Standard cup but no difference in migration was found. Early appearance of such radiolucent lines represents an unspecific finding without reliable correla-tion to 3-year migration of the acetabular component.

Place, publisher, year, edition, pages
Institutionen för klinisk och experimentell medicin, 2007
Series
Linköping University Medical Dissertations, ISSN 0345-0082 ; 1014
Keyword
Fixation, Hip prostheses, primary arthroplasty, revision arthroplasty, cemented, uncemented, bone grafting, Fixation, Höftprotes, primärartroplastik, revisionsartroplastik, cement, cementfri, bentransplantation
National Category
Surgery
Identifiers
urn:nbn:se:liu:diva-10351 (URN)978-91-85895-98-4 (ISBN)
Public defence
2007-10-12, Berzeliussalen, Hälsouniversitetet, Campus US, Linköpings universitet, Linköping, 09:00 (English)
Opponent
Supervisors
Available from: 2007-11-28 Created: 2007-11-28 Last updated: 2009-08-22

Open Access in DiVA

No full text

Other links

Publisher's full textLink to Ph.D. Thesis

Authority records BETA

Palm, LarsIvarsson, Ingemar

Search in DiVA

By author/editor
Palm, LarsIvarsson, Ingemar
By organisation
Orthopaedics and Sports Medicine Faculty of Health SciencesDepartment of Orthopaedics Linköping
Medical and Health Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 54 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf