抄録
A femoral-head graft to the acetabulum was performed at the time of cementless total hip arthroplasty in patients with acetabular dysplasia. In this follow-up study, the findings for 14 hips of 12 patients have been analyzed. The mean follow-up period after surgery was 5.7 years, with a range of 5-7 years. Roentogenographic analysis showed grafted bone formation from 6 months to 2 years (average 1.0 year) in all patients. In 9 of 14 hips (64%), the lateral side of the grafted bone was resorbed within 1 to 4 years (average 2.0 years) . Bone scintigraphy showed that accumulation of Tc-99m in the grafted bone increased from 6 weeks to 3 months and declined in 5 years. These findings indicate that the grafted bone is inclined to resorb at the stress shielding area.
