Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_

Poster
Topic: Arthroplasty - Hip
Abstract number: 23266
DEMOGRAPHIC FACTORS AND THEIR INFLUENCE INRESULT OF THA
Firooz MADADI, Manuchehr VAHID FARAHMANDI, Morteza KAZEMI, Firoozeh
MADADI, Alireza EAJAZI
Shahid Beheshti Medical University, Tehran (IRAN)
The role of different surgical approaches and types of implant, surgical technique,
patient’s age, activity level, weight and other demographic factors have been
investigated in a lot of studies. The aim of this study is to assess the effect of
demographic factors as well as the effect of traditional life-style in patients who had
total hip arthroplasty (THA) in our center within the past 20 years. We reviewed the
average Harris Hip Score (HHS) and the prosthesis survival in 210 patients including
235 THAs and 49 revisions between 1985-2005. The mean F/U was 6.1 years and
average HHS was 78.08±15.7. 26 patients were dead and 17 were inaccessible. The
effects of traditional life-style and daily activity level on implant loosening were also
considered. Multivariable analysis showed that patient’s sex, surgical technique,
surgeon, BMI, use of cement weren’t related to either implant loosening or HHS. We
had 25 prosthesis dislocations, which all happened by trauma. Considering revision
surgery as the end point, the following 10-year-survivals were calculated; cemented
cup 60%, uncemented cup 85% and both cemented/uncemented stems 80%.
Considering radiographic evidence of loosening as the end point, the 10-yearsurvival
of cups was 80% and that of cemented, uncemented stems was 60% and
70%. Delay in performance THA resulted in more limping (because of anatomy
deterioration and muscles weakness) and lower HH. scores. Additionally, the survival
of ourTHAs were generally shorter than literature.
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