Early Equivalence of Uncemented Press-fit and Compress® Femoral Fixation

• DOI: 10.1007/s11999-009-0912-9
• Publication Date: 2009-07-29T17:14:33Z
• Authors: German L. Farfalli; Patrick J. Boland; Carol D. Morris; Edward A. Athanasian; John H. Healey
• Keywords: Aseptic processing

Bone ingrowth promises more durable biologic fixation of megaprostheses.The relative performance different types is unknown.We compared the two forms biologically fixed femoral components: an intramedullary uncemented press-fit stem (UCS; Group 1, 50 patients) and a Compress1 (CPS; 2, 41 patients).In overall Kaplan-Meier prosthetic survival rates were 85% at 5 71% 10 years.Most failures longterm developments.Aseptic loosening was primary cause failure.Stem diameters less than 13.5 mm diaphyseal/stem coefficient greater 2.5 associated with decreased survival.In rate CPS 88% years.Failure or fracture during first year main reason for revision.Five-year similar between groups we observed no difference in functional success implants.We found after 1-year followup 2 (CPS).Any can only be proven by longerterm study randomized trial.