title: Improving initial acetabular component stability in revision total hip arthroplasty calcium phosphate cement vs reverse reamed cancellous allograft.
abstract: 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.
authors.affiliation: The Center for Orthopedic Research and Education (CORE) Institute.
authors.forename: David J
authors.initials: DJ
authors.lastname: Jacofsky
authors.forename: John D
authors.initials: JD
authors.lastname: McCamley
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Jaczynski
authors.forename: M Wade
authors.initials: MW
authors.lastname: Shrader
authors.forename: Marc C
authors.initials: MC
authors.lastname: Jacofsky
mesh_terms: D020341:Absorbable Implants; D000077:Acetabulum / Q000601:surgery*; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D001696:Biomechanical Phenomena; D001843:Bone Cements; D016025:Bone Transplantation; D002102:Cadaver; D002130:Calcium Phosphates; D005260:Female; D006621:Hip Joint / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D007593:Joint Instability / Q000517:prevention & control*; D008297:Male; D011475:Prosthesis Failure; D012044:Regression Analysis; D012086:Reoperation / Q000295:instrumentation; D014184:Transplantation, Homologous
chemical_list: D001843:Bone Cements; D002130:Calcium Phosphates; C020243:calcium phosphate