Medizinische Universität Graz Austria/Österreich - Forschungsportal - Medical University of Graz
Gewählte Publikation:
SHR Neuro Krebs Kardio Lipid Stoffw Microb
Sadoghi, P; Leithner, A; Weber, P; Friesenbichler, J; Gruber, G; Kastner, N; Pohlmann, K; Jansson, V; Wegener, B.
Radiolucent lines in low-contact-stress mobile-bearing total knee arthroplasty: a blinded and matched case control study.
BMC Musculoskelet Disord. 2011; 12(13-14):142-142
Doi: 10.1186/1471-2474-12-142
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- Führende Autor*innen der Med Uni Graz
- Sadoghi Patrick
- Co-Autor*innen der Med Uni Graz
- Friesenbichler Jörg
- Gruber Gerald
- Kastner Norbert
- Leithner Andreas
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- Abstract:
- Background: Low-contact-stress (LCS) mobile-bearing total knee arthroplasty (TKA) (Johnson & Johnson, New Brunswick, NJ; previously: DePuy, Warsawa, USA) provides excellent functional results and wear rates in long-term follow-up analyses. Radiological analysis shows radiolucent lines (RLL) appearing immediately or two years after primary implantation, indicative of poor seat. Investigations proved RLL to be more frequent in uncemented TKA, resulting in a consensus to cement the tibial plateau, but their association with clinical findings and patients discomfort and knee pain is still unknown. Methods: 553 patients with 566 low-contact-stress (LCS) total knee prostheses were screened for continuous moderate knee pain. We compared tibial stress shielding classified by Ewald in patients suffering from pain with a matched, pain-free control group on blinded X-rays. We hypothesized a positive correlation between pain and radiolucency and higher frequency of such radiolucent lines in the most medial and most lateral zones of the tibial plateau. Results: Twenty-eight patients suffered from knee pain in total. Radiolucencies were detected in 27 of these cases and in six out of 28 matched controls without knee pain. We could demonstrate a significant correlation of knee pain and radiolucencies, which appeared significantly more frequently in the outermost zones of the tibial plateau. Conclusion: Our findings suggest that radiolucent lines, representing poor implant seat, about the tibial plateau are associated with knee pain in LCS patients. Radiolucencies are observed more often in noncemented LCS, and cementing the tibial plateau might improve implant seat and reduce both radiolucent lines and associated knee pain.
- Find related publications in this database (using NLM MeSH Indexing)
- Adult -
- Age Factors -
- Aged -
- Aged, 80 and over -
- Arthroplasty, Replacement, Knee - adverse effects
- Case-Control Studies -
- Female -
- Follow-Up Studies -
- Humans -
- Knee Prosthesis - adverse effects
- Linear Models -
- Male -
- Middle Aged -
- Multivariate Analysis -
- Osteoarthritis, Knee - physiopathology
- Prosthesis Failure - adverse effects
- Retrospective Studies -
- Sex Factors -
- Single-Blind Method -
- Stress, Mechanical -
- Find related publications in this database (Keywords)
- Arthroplasty
- low-contact-stress
- mobile-bearing
- radiolucent lines
- knee pain