Acetabulum, Calcium phosphate, DePuy, Health, Hip Replacement, hip resurfacing, Medicine, surgery
Improving Initial Acetabular Component Stability in Revision Total Hip Arthroplasty Calcium Phosphate Cement vs Reverse Reamed Cancellous Allograft.
The Center for Orthopedic Research and Education (CORE) Institute; The Banner Sun Health Research Institute.
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.
Copyright © 2011 Elsevier Inc. All rights reserved.
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