In vivo measurement of acetabular cement pressurization using a simple new design of cement pressurizer

Aseptic loosening of the acetabular component remains a limiting factor in the long-term success of total hip replacement. An instrumented pressurizer has been designed to allow the intraoperative measurement of acetabular cement pressurization, which is known to contribute to implant fixation. Aver...

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Bibliographic Details
Published inThe Journal of arthroplasty Vol. 14; no. 7; pp. 854 - 859
Main Authors New, A.M.R., Northmore-Ball, M.D., Tanner, K.E., Cheah, S.K.
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.10.1999
Subjects
Acetabulum
Adult
Aged
Bone Cements
cement pressurization
Cementation - instrumentation
Female
Hip Prosthesis
Humans
in vivo
Male
measurement
Middle Aged
Pressure
Prosthesis Failure
total hip replacement
total hip replacement
cement pressurization
in vivo
measurement
acetabulum
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Summary:Aseptic loosening of the acetabular component remains a limiting factor in the long-term success of total hip replacement. An instrumented pressurizer has been designed to allow the intraoperative measurement of acetabular cement pressurization, which is known to contribute to implant fixation. Average intraoperative cement pressures in 16 operations performed by 2 surgeons were 49 ± 17 kPa (6.4 ± 2.3 psi) and 47 ± 17 kPa (6.2 ± 2.2 psi), and peak pressures were 76 ± 5 kPa (10.0 ± 0.6 psi) and 93 ± 15 kPa (12.2 ± 1.9 psi), comparable to previous work in vitro. The pressurization required for optimal cement penetration into cleaned low-density cancellous bone is reported to be of the order of 35 to 50 kPa (4.6-6.6 psi) for 30 to 60 seconds, and the present data show that this is attainable in vivo using a simple device.
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ISSN:0883-5403
1532-8406
DOI:10.1016/S0883-5403(99)90037-2