title: In vitro pressurization of the acetabular cement mantle: the effect of a flange.
abstract: A model was developed to assess the effect of an acetabular flange on pressure within different zones of the cement mantle during insertion. Two prosthetic designs were assessed in 3 different sizes. Flanged components produced significantly higher mean pressures than unflanged ones (P < .01). The effect of a flange was more pronounced at the rim than at the pole. Delayed insertion resulted in a further significant rise in mean pressure (P < .01), but this did not compensate for the lack of a flange. This experimental model supports the use of a flange to increase pressure within the cement mantle on component insertion. The beneficial effect is more marked in the area that is most likely to show deficiency in the cement-bone interface on postoperative radiographs.
authors: Avon Orthopaedic Centre, Southmead Hospital, Westbury-on-Trym, Bristol BS10 5NB, United Kingdom.
authors: Benedict J A
authors: BJ
authors: Lankester
authors: Omar
authors: O
authors: Sabri
authors: Sabina
authors: S
authors: Gheduzzi
authors: James D
authors: JD
authors: Stoney
authors: Anthony W
authors: AW
authors: Miles
authors: Gordon C
authors: GC
authors: Bannister
mesh_terms: D000077:Acetabulum; D000704:Analysis of Variance; D002484:Cementation; D006622:Hip Prosthesis; D066298:In Vitro Techniques; D011312:Pressure; D011474:Prosthesis Design; D013314:Stress, Mechanical