Improving initial acetabular component stability in revision total hip arthroplasty calcium phosphate cement vs reverse reamed cancellous allograft

J Arthroplasty. 2012 Feb;27(2):305-9. doi: 10.1016/j.arth.2011.05.009. Epub 2011 Jul 20.


A reproducible retroacetabular defect was created bilaterally in 9 cadaver pelves. The defects were filled with either an injectable, bioresorbable, calcium phosphate cement, or reverse-reamed cancellous allograft. An uncemented acetabular shell was impacted, followed by the placement of an appropriate liner. The pelves were then sectioned, and each half was loaded in a material testing machine to simulate walking on the construct over a several week period. The cement-filled defects lasted a greater number of cycles before failure and had greater cup stability and stiffness. The use of resorbable bone void filler for retroacetabular defects shows promise in this biomechanical analysis. Long-term clinical follow-up is warranted to track osseointegration of the implant and restoration of bone stock between this and other clinically accepted surgical techniques.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Absorbable Implants
  • Acetabulum / surgery*
  • Aged
  • Aged, 80 and over
  • Arthroplasty, Replacement, Hip / instrumentation*
  • Biomechanical Phenomena
  • Bone Cements*
  • Bone Transplantation*
  • Cadaver
  • Calcium Phosphates*
  • Female
  • Hip Joint / surgery*
  • Hip Prosthesis*
  • Humans
  • Joint Instability / prevention & control*
  • Male
  • Prosthesis Failure
  • Regression Analysis
  • Reoperation / instrumentation
  • Transplantation, Homologous


  • Bone Cements
  • Calcium Phosphates
  • calcium phosphate