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KMID : 0386719960080010060
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Journal of the Korean Hip Society
1996 Volume.8 No. 1 p.60 ~ p.67
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A Clinical Study of the Cementless Acetabular Component Fixation with Press-fit
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Abstract
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The results of one hundred consecutive primary total hip arthroplasties in eighty-one patients in which a Harris-Galante porous coated acetabular component had been used were reviewed. This study shows a clinical and radiological analysis of the
fiber-mesh coated acetabular compoents with a minimum 5 year follow-up. In all patients the Harris-Galante acetabular component had been pressfit, which was 1~2mm under-reaming technique into the innominate bone with 2~4 screws augmentation.
The average age was 48 years(range 24-82 years). The mean preoperative Harris Hip Score was 56.2(range 24.2-79.0) and the postoperative Harris Hip Score 94.2(range 60.1-100). There were no revisions for loosening or migration of the acetabular
components. On theradiological assessment there was no loosening and migration of acetabular component and there was no fiber mesh disruption and osteolysis. There was no complication related with screws. The initial gaps between acetabular cup
andthe
acetabular bone were seen on the immediate postoperative radiographs at zone II in 12 cups. The peripheral gap was not observed on immediate post-operative radiographs. But the gaps were resolved during 6~12 months postoperatively. The
radiolucont
lines
were noted in 52 cups. These radiolucent lines were below 0.5mm in thickness and most frquently located in zone III(35%), less frequently zone
I(26%). But there were no continuous radiolucent lines over 2mm. Most continous radiolucent lines were stabilized at 2~3 vears after operation. A longer follow-up period is needed for fates ofthese thin radiolucent lines.
We conculded that the fiber-mesh coated hemispherical cementless components were performing wellwith minimum 5-year-follow-up. Our data suggests that press-fit, 1~mm under-reaming technique with screw augmentation is safe and efficacious for
acetabular
component fixation in primary total hip arthoplasty when anatomy and bone stock permit.
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