The effect of vacuum mixing and pre-heating the femoral component on the mechanical properties of the cement mantle

M. Baleani, E. Bialoblocka-Juszczyk, G. E. Engels, M. Viceconti

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We investigated the effect of pre-heating a femoral component on the porosity and strength of bone cement, with or without vacuum mixing used for total hip replacement. Cement mantles were moulded in a manner simulating clinical practice for cemented hip replacement. During polymerisation, the temperature was monitored. Specimens of cement extracted from the mantles underwent bending or fatigue tests, and were examined for porosity. Pre-heating the stem alone significantly increased the mean temperature values measured within the mantle (+14.2°C) (p <0.001) and reduced the mean curing time (-1.5 min) (p <0.001). The addition of vacuum mixing modulated the mean rise in the temperature of polymerisation to 11°C and reduced the mean duration of the process by one minute and 50 seconds (p = 0.01 and p <0.001, respectively). In all cases, the maximum temperature values measured in the mould simulating the femur were <50°C. The mixing technique and pre-heating the stem slightly increased the static mechanical strength of bone cement. However, the fatigue life of the cement was improved by both vacuum mixing and pre-heating the stem, but was most marked (+ 280°C) when these methods were combined. Pre-heating the stem appears to be an effective way of improving the quality of the cement mantle, which might enhance the long-term performance of bone cement, especially when combined with vacuum mixing.

Original languageEnglish
Pages (from-to)454-460
Number of pages7
JournalJournal of Bone and Joint Surgery - Series B
Volume92
Issue number3
DOIs
Publication statusPublished - Mar 2010

Fingerprint

Vacuum
Thigh
Heating
Bone Cements
Temperature
Porosity
Polymerization
Fatigue
Hip Replacement Arthroplasties
Femur
Hip
Fungi

ASJC Scopus subject areas

  • Surgery
  • Orthopedics and Sports Medicine

Cite this

The effect of vacuum mixing and pre-heating the femoral component on the mechanical properties of the cement mantle. / Baleani, M.; Bialoblocka-Juszczyk, E.; Engels, G. E.; Viceconti, M.

In: Journal of Bone and Joint Surgery - Series B, Vol. 92, No. 3, 03.2010, p. 454-460.

Research output: Contribution to journalArticle

@article{03f75ef162cc4ea38579504771ea9f3b,
title = "The effect of vacuum mixing and pre-heating the femoral component on the mechanical properties of the cement mantle",
abstract = "We investigated the effect of pre-heating a femoral component on the porosity and strength of bone cement, with or without vacuum mixing used for total hip replacement. Cement mantles were moulded in a manner simulating clinical practice for cemented hip replacement. During polymerisation, the temperature was monitored. Specimens of cement extracted from the mantles underwent bending or fatigue tests, and were examined for porosity. Pre-heating the stem alone significantly increased the mean temperature values measured within the mantle (+14.2°C) (p <0.001) and reduced the mean curing time (-1.5 min) (p <0.001). The addition of vacuum mixing modulated the mean rise in the temperature of polymerisation to 11°C and reduced the mean duration of the process by one minute and 50 seconds (p = 0.01 and p <0.001, respectively). In all cases, the maximum temperature values measured in the mould simulating the femur were <50°C. The mixing technique and pre-heating the stem slightly increased the static mechanical strength of bone cement. However, the fatigue life of the cement was improved by both vacuum mixing and pre-heating the stem, but was most marked (+ 280°C) when these methods were combined. Pre-heating the stem appears to be an effective way of improving the quality of the cement mantle, which might enhance the long-term performance of bone cement, especially when combined with vacuum mixing.",
author = "M. Baleani and E. Bialoblocka-Juszczyk and Engels, {G. E.} and M. Viceconti",
year = "2010",
month = "3",
doi = "10.1302/0301-620X.92B3.22579",
language = "English",
volume = "92",
pages = "454--460",
journal = "Journal of Bone and Joint Surgery - Series B",
issn = "0301-620X",
publisher = "British Editorial Society of Bone and Joint Surgery",
number = "3",

}

TY - JOUR

T1 - The effect of vacuum mixing and pre-heating the femoral component on the mechanical properties of the cement mantle

AU - Baleani, M.

AU - Bialoblocka-Juszczyk, E.

AU - Engels, G. E.

AU - Viceconti, M.

PY - 2010/3

Y1 - 2010/3

N2 - We investigated the effect of pre-heating a femoral component on the porosity and strength of bone cement, with or without vacuum mixing used for total hip replacement. Cement mantles were moulded in a manner simulating clinical practice for cemented hip replacement. During polymerisation, the temperature was monitored. Specimens of cement extracted from the mantles underwent bending or fatigue tests, and were examined for porosity. Pre-heating the stem alone significantly increased the mean temperature values measured within the mantle (+14.2°C) (p <0.001) and reduced the mean curing time (-1.5 min) (p <0.001). The addition of vacuum mixing modulated the mean rise in the temperature of polymerisation to 11°C and reduced the mean duration of the process by one minute and 50 seconds (p = 0.01 and p <0.001, respectively). In all cases, the maximum temperature values measured in the mould simulating the femur were <50°C. The mixing technique and pre-heating the stem slightly increased the static mechanical strength of bone cement. However, the fatigue life of the cement was improved by both vacuum mixing and pre-heating the stem, but was most marked (+ 280°C) when these methods were combined. Pre-heating the stem appears to be an effective way of improving the quality of the cement mantle, which might enhance the long-term performance of bone cement, especially when combined with vacuum mixing.

AB - We investigated the effect of pre-heating a femoral component on the porosity and strength of bone cement, with or without vacuum mixing used for total hip replacement. Cement mantles were moulded in a manner simulating clinical practice for cemented hip replacement. During polymerisation, the temperature was monitored. Specimens of cement extracted from the mantles underwent bending or fatigue tests, and were examined for porosity. Pre-heating the stem alone significantly increased the mean temperature values measured within the mantle (+14.2°C) (p <0.001) and reduced the mean curing time (-1.5 min) (p <0.001). The addition of vacuum mixing modulated the mean rise in the temperature of polymerisation to 11°C and reduced the mean duration of the process by one minute and 50 seconds (p = 0.01 and p <0.001, respectively). In all cases, the maximum temperature values measured in the mould simulating the femur were <50°C. The mixing technique and pre-heating the stem slightly increased the static mechanical strength of bone cement. However, the fatigue life of the cement was improved by both vacuum mixing and pre-heating the stem, but was most marked (+ 280°C) when these methods were combined. Pre-heating the stem appears to be an effective way of improving the quality of the cement mantle, which might enhance the long-term performance of bone cement, especially when combined with vacuum mixing.

UR - http://www.scopus.com/inward/record.url?scp=77649207533&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77649207533&partnerID=8YFLogxK

U2 - 10.1302/0301-620X.92B3.22579

DO - 10.1302/0301-620X.92B3.22579

M3 - Article

C2 - 20190321

AN - SCOPUS:77649207533

VL - 92

SP - 454

EP - 460

JO - Journal of Bone and Joint Surgery - Series B

JF - Journal of Bone and Joint Surgery - Series B

SN - 0301-620X

IS - 3

ER -