PMID: 9526215Apr 4, 1998Paper

An in vitro study of a new design of acetabular cement pressurizer

The Journal of Arthroplasty
F P BernoskiM D Northmore-Ball

Abstract

Aseptic loosening of the acetabular component remains one of the limiting factors in the long-term success of total hip arthroplasty. Cement pressurization has been shown to improve fixation. A new pressurizer has been designed that seals around the rim of the acetabulum and covers the transverse ligament notch with a flap. The results of in vitro testing of this device are presented and compared with those of pressure generated by insertion of an acetabular cup. The pressurizer allowed sustained, uniform cement pressurization. Peak pressures with the new pressurizer were 180 kPa at both the iliac region of the rim and the pole of an instrumented model acetabulum, compared with 55 kPa at the rim and 120 kPa at the pole on cup insertion. Pressures were maintained in the range of 80-90 kPa. The flap was effective in preventing cement leakage from the notch, and pressures were higher than when the flap was absent. Cup insertion alone gave only transient pressurization, substantially less near the rim of the acetabulum than at the pole. Peripheral pressurization may be significant in producing secure local fixation at the rim of the acetabulum, in particular in the region of the ilium (Charnley zone 1), where radiolucencies are mos...Continue Reading

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Citations

Apr 28, 2006·International Orthopaedics·F WadiaM L Porter
Nov 12, 2003·Biomaterials·Robert W KleinPaul A Higham
Jun 5, 2008·Orthopedics·Yega KalairajahDavid M Ricketts
Jul 27, 2005·Acta Orthopaedica. Supplementum·Gunnar Flivik
Apr 7, 2004·The Journal of Arthroplasty·Dominik ParschSteffen J Breusch
May 19, 2018·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Teresa Alonso-RasgadoTim N Board
Jan 15, 2005·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·M S ThompsonL Ryd
Nov 9, 2010·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·B N SmithR W Crawford
Jun 9, 2004·Orthopedics·Efrain Diaz-BorjonRichard L Worland

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