Cementless total HIP arthroplasty: biological fixation by bony ingrowth

ABSTRACT

Eighty three patients who underwent the Harris Galante porous hip prosthetic replacement have been evaluated at an average follow-up of 3.5 years with a range of 2-5 years. In the femoral component, fixation by bony ingrowth occurred in 95% of the cases in which a press fit of the stem was achieved at the isthmus, but in only 70% of those without a pressfit. An interference fit and rigidly fixed acetabular component results in bony ingrowth type of fixation in all cases. Bony ingrowth fixation of components correlated to excellent or good results clinically. Fixation by stable fibrous tissue gave satisfactory results but mild pain and limp was commonly noted. The preoperative Harris score averaged 43.5 [range 20-65] and postoperative score averaged 87.5 [range 55-100]. There was no superficial or deep infection, dislocation or pulmonary embolism in this series. Two patients with unsatisfactory function due to painful and unstable femoral components were considered as failures and are candidates for revision surgery