COMPRESSED ALLOGRAFT CHIPS FOR ACETABULAR RECONSTRUCTION IN REVISION HIP-ARTHROPLASTY

We report the results of 24 acetabular reconstructions in which cement ed polyethylene cups and tamped corticocancellous allografts were used for severe acetabular bone deficiency. Eleven hips had type-II (cavit ary) bone deficiency and 13 had type-HI (combined) defects. At a mean follow-up of 5.8 years, two components had migrated more than 5 mm and had accompanying radiolucent zones of more than 2 mm width. A radiolu cency 5 mm wide was also seen in zone III of an acetabular implant whi ch had not migrated. None of the patients had required revision becaus e of Loosening or infection.