One hundred consecutive patients had a primary unilateral total hip
arthroplasty with use of a single design of the femoral component (Harris
Precoat), inserted with a so-called third-generation cementing technique,
between July 1985 and June 1987. There were seventy-four women and
twenty-six men. The mean age at the time of the operation was seventy-one
years (range, forty-one to ninety-two years) and the mean weight was
seventy kilograms (range, forty-eight to 105 kilograms). Eleven of the 100
patients died during the follow-up period, all with the implant in place.
Of the eighty-nine surviving patients, one had a revision arthroplasty for
aseptic loosening. The mean duration of clinical follow-up for the
remaining eighty-eight patients was seven years (range, six to eight
years). The mean Harris hip score at the latest follow-up evaluation was 91
points (range, 68 to 97 points). Of the eighty-eight patients, eighty-five
(97 percent) had a good or excellent result. Radiographic follow-up was
performed for eighty-one patients; none had evidence of loosening of the
stem, and five (6 percent) had endosteal cavitation but were asymptomatic.
The rate of failure (loosening or revision) of the femoral component in the
entire series was 1 per cent (one hip). The low rate of failure and the
maintenance of good and excellent clinical and radiographic results during
this period of follow-up are consistent with reports from other
institutions. This strengthens the argument to retain or widen the existing
indications for the insertion of a femoral stem with cement in primary
total hip arthroplasty.