Authors reviewed 159 cases of total hip arthroplasty which had used uncemented femoral components associatted with Harris=Galante uncemented metal backed acetabular component and followed more than 1 year at least to identify overall
incidence of osteolysis, incidence of osteolysis according to type of implant, time of first noted, radiographic distribution of osteolysis with its shape and size and correlation between osteolysis and relevant factors.
@ES The results were lollowings:
@EN 1) Overall incidence of femoral endosteal osteolysis in the use of three kind of uncemented femoral components associaterd with Harris Galente, uncemedted metal backed acetabular component was 6.3%
2)Ostolysis was first noted radiographically at 12 to 55 months(mean, 27months) postoperativesy.
3) Inmost patients, osteolysis occurred at Zone 2,3,5,6 on AP radiograph and Zone 3,5,6 on lateral radiograph, where was distal to porous pad
4) Mean liner wear rate in patient with osteolysis was 0.46 mm/year, which was higher than that reported previously and mean wear rate in cases with progression of osteolysis was higher than that without progression of osteolysis.
5) No corelation could be found between thickeness of polyethylene liner and osteolysis.
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