title: Influence of cooling on curing temperature distribution during cementing of modular cobalt-chromium and monoblock polyethylene acetabular cups.
abstract: Total hip replacements for older patients are usually cemented to ensure high postoperative primary stability. Curing temperatures vary with implant material and cement thickness (30°C to 70°C), whereas limits for the initiation of thermal bone damage are reported at 45°C to 55°C. Thus, optimizing surgical treatment and the implant material are possible approaches to lower the temperature. The aim of this study was to investigate the influence of water cooling on the temperature magnitude at the acetabulum cement interface during curing of a modular cobalt-chromium cup and a monoblock polyethylene acetabular cup. The curing temperature was measured for SAWBONE and human acetabuli at the cement-bone interface using thermocouples. Peak temperature for the uncooled condition reached 70°C for both cup materials but was reduced to below 50°C in the cooled condition for the cobalt-chromium cup (P = .027). Cooling is an effective method to reduce curing temperature with metal implants, thereby avoiding the risk of thermal bone damage.
authors.affiliation: 1TUHH Hamburg University of Technology, Hamburg, Germany.
authors.forename: Stephan
authors.initials: S
authors.lastname: Rothstock
authors.forename: Mahnaz
authors.initials: M
authors.lastname: Saadatmand
authors.forename: Matthias
authors.initials: M
authors.lastname: Vollmer
authors.forename: Andreas
authors.initials: A
authors.lastname: Paech
authors.forename: Christian
authors.initials: C
authors.lastname: Jürgens
authors.forename: Roman
authors.initials: R
authors.lastname: Nassutt
authors.forename: Michael M
authors.initials: MM
authors.lastname: Morlock
mesh_terms: D001843:Bone Cements; D002858:Chromium Alloys / Q000737:chemistry*; D003080:Cold Temperature; D006622:Hip Prosthesis; D008422:Materials Testing; D020959:Polyethylene / Q000737:chemistry*; D011474:Prosthesis Design
chemical_list: D001843:Bone Cements; D002858:Chromium Alloys; D020959:Polyethylene
keywords: acetabular replacement; cementing technique; curing temperature; thermal damage