Gender, age, body mass index, activity level, surgical technique and
cement use are not related to Harris Hip scores or implant loosening after
total hip arthoplasty, according to a recent presentation at the SICOT XXV
Triennial World Congress 2011.
In his study, Manouchehr Vahid Farahmandi, from the Akhtar Orthopaedic
Hospital in Tehran, Iran, concluded that unneccesary delays in performing total
hip arthroplasty (THA) caused limping and lower Harris Hip scores in patients
who underwent the procedure. Defects in joint anatomy and weakness of the
surrounding muscles were causes of these complications, according to the study
“The aim of this study is to assess the effect of these factors in
our center within the past 20 years,” Farahmandi said during his
Using revision surgery as an endpoint, cemented prosthetic cups had a
60% survival rate and uncemented cups showed an 85% survival rate, the study
noted. Using radiographic evidence of loosening as an endpoint yielded an 80%
survival rate for cups; cemented stems had a 60% survival rate, while
uncemented stems had a 70% rate. THA in the study showed a shorter survival
rate than those reported in previous case studies, Farahmandi noted.
To determine whether a patient’s gender, body mass index,
prosthetic type, lifestyle or daily activities had an impact on implant
loosening, Farahmandi examined 210 patients with a mean age 65 years who had a
total of 235 THAs and 49 revision arthoplasties between 1985 and 2005. The
average follow-up was 6.1 years: 167 patients (79.52%) were followed either in
person or by telephone. During the follow-up, 27 patients died and 17 were
unable to be followed. Of these patients, there were 25 reports of
trauma-related prosthetic dislocations, according to the abstract.
- Farahmandi MV. The influence of demographic factors, surgical
approaches and implant design on long-term outcome of total hip replacement.
Paper #28661. Presented at the SICOT XXV Triennial World Congress 2011. Sept
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