Cup deformation is demonstrated to be significantly greater using an 8 mm than a 22 mm pusher. Deformation may lead to increased polyethylene wear and late prosthetic failure. Use of a 22 mm pusher is recommended in Charnley total hip replacement.
CooperJ.R., DowsonD., FisherJ., IsaacG.H., WroblewskiB.M.Observations of residual sub-surface shear strain in ultrahigh molecular weight polyethylene acetabular cups of hip prostheses.J Mat Sci: Materials in Medicine1994; 5: 52–7.
2.
DeLeeJ.G., CharnleyJ.Radiographic demarcation of cemented sockets in total hip replacement.Clin Orth1976; 121: 20–32.
3.
DerbyshireB., FisherJ., DowsonD., HardakerD., BrummittK.Comparative study of the wear of UHMWPE with zirconia ceramic and stainless steel femoral heads in artificial hip joints.Med Eng Physics1994; 16(3): 229–36.
4.
FisherJ.Wear of ultrahigh molecular weight polyethylene in total artificial joints.Current Orth1994; 8: 164–9.
5.
StoneM.H., WilkinsonR., StotherI.G.Variation in applied force during insertion of cemented femoral prostheses.Orthopaedics1991; 14(7): 199–203.
