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19 years outcome after cementless total hip arthroplasty with spongy metal structured implants in patients younger than 65 years

Ludger Gerdesmeyer, Munjed Al Muderis, Hans Gollwitzer, Norbert Harrasser, Martin Stukenberg, Maria-Angela Clifford & Andreas Toepfer

abstract

BACKGROUND
Cementless fixation of total hip arthroplasties (THAs) is often favored in young, high-demanding patients due to the conservation of valuable bone-stock and easier revision if loosening has occurred. Long-term outcome data of the spongy metal structured implant used in the present study in patients younger than 65 years are still lacking.

METHODS
We conducted a retrospective chart review and functional investigation (Merle d'Aubigné score, SF-12) of patients younger than 65 years at implantation treated with a spongy metal structured THA (n = 79) from one orthopedic university center from 1985 to 1989.

RESULTS
At a 19-year mean follow-up (range: 15.3 - 21.3 years), the overall stem survival rate was 93.7 %, and the overall cup survival rate was 82.3 %. Revision surgeries of the stem were performed in all cases for aseptic loosening at an average of 15.3 ± 3.5 years after implantation. Acetabular components were revised for aseptic loosening and recurrent dislocation after inlay revision on an average of 11.8 ± 4.7 years after implantation. No other device related complications occurred within the 19-year follow-up period. No correlation was found between time of revision and gender or age. Clinical outcome scores (Merle d'Aubigné score, SF-12) revealed excellent to good results of the implanted THAs in 87 % of patients.

CONCLUSIONS
We conclude that spongy metal structured cementless THAs implanted in young patients have an excellent survival and provide trustworthy clinical results at 19 years of follow-up.
   
citation Gerdesmeyer L, Al Muderis M, Gollwitzer H, Harrasser N, Stukenberg M, Clifford M A, Toepfer A. 19 years outcome after cementless total hip arthroplasty with spongy metal structured implants in patients younger than 65 years. BMC Musculoskelet Disord 2016; 17:429.
   
type journal paper/review (English)
date of publishing 18-10-2016
journal title BMC Musculoskelet Disord (17/1)
ISSN electronic 1471-2474
pages 429
PubMed 27756273
DOI 10.1186/s12891-016-1285-3