M. Bohler et al., 10-YEAR RESULTS OF CEMENTED WELLER-TYPE TOTAL HIP ARTHROPLASTIES - ANALYSIS USING DIFFERENT DEFINITIONS OF FAILURE, Archives of orthopaedic and trauma surgery, 113(2), 1994, pp. 57-60
The first 100 consecutive cemented Weller-type total hip arthroplastie
s carried out between 1976 and 1977 were reexamined. Clinical analysis
of 43 implants with more than 10 years follow-up showed that results
were excellent in 21 patients (49%), good in 13 (30%), fair in 7 (16%)
and poor in 2 (5%). Radiographic analysis revealed 33 (87%) stable fe
moral and 31 (81%) stable acetabular components. Statistical survivors
hip analysis of all 100 implants produced a probability of reoperation
of 6.2%, a probability of radiographic implant loosening of 28.2% and
a probability of radiographic loosening with clinical symptoms of 7.6
%. The definition of failure should be ''radiographic loosening of the
prosthesis with clinical symptoms'' because this evaluation seems to
have the best clinical relevance. Concerning the fact that the cement
fixation was not performed to today's standard, the results after more
than 10 years with this total hip system (Weller long stem) are suffi
cient.