Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Arthroplasty - Knee
Abstract number: 24424
OUTCOME AFTER KNEE REVISION ARTHROPLASTY USING A ROTATING-
HINGED PROSTHESIS: A MINIMUM SIX YEAR FOLLOW-UP
Asgeir GUDNASON, Jan MILBRINK, Nils P HAILER
Akademiska Sjukhuset, Uppsala (SWEDEN)
We evaluate the outcome of the Link Endo-model rotating-hinge total knee
arthroplasties used in revision surgery due to aseptic loosening. Between 1991 and
2003, 38 patients (26 females) underwent 42 revision arthroplasties. The mean
follow-up was after 8.8 (6-18) years. Complete medical histories and radiographic
data were collected for all patients. 15 patients had died and 12 patients declined to
participate in clinical follow-up, leaving 13 knees for clinical and radiographic followup.
These patients were evaluated according to the Hospital for Special Surgery
score (HSSS) and the Knee Society scores (KSS). Radiographic evaluation was
performed by standardised radiographs.The mean age at revision surgery was 72
(55-88) years, and most patients had significant medical comorbidities (31 patients).
4 of 42 knees were re-revised due to aseptic loosening, 5 underwent re-revision due
to other reasons. The mean HSSS at follow-up was 67 (36-90), the mean KSS-knee
was 85 (73-96), and the mean KSS-function was 29 (0-100). Radiographic evaluation
showed well-fixed implants without radiolucencies (n=8) or discrete radiolucent lines
(n=5), and no implant was deemed to be in need of revision.With revision due to
aseptic loosening as the endpoint, 10-year-survival was 89.2%. Knee function was
good to satisfactory in a majority of patients, whereas global function scores were
impaired. Our results indicate that revision arthroplasty of the knee with the Endomodel
rotating-hinge can be performed with good results in an elderly population with
a high degree of medical comorbidities.
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