title: Revision of tibial TKA components: bone loss is independent of cementing type and technique: an in vitro cadaver study.
abstract: BACKGROUND
  Different bone cements and various cementation techniques can lead to different bone loss in revision surgery. We investigated the degree of tibial bone loss depending on different cements and techniques.
  
  
  METHODS
  30 tibia specimens were matched into three groups (10 each). In all cases Genesis II tibia component were implanted. In two groups, the tibia base plate alone was cemented with Palacos® R+G and Refobacin® Bone Cement R. In the third group, both tibial base plate and tibial stem were cemented with Palacos® R+G. Afterwards, the specimens were axial loaded with 2000 N for 10,000 cycles. Tibial components were explanted and the required time to explantation was recorded. Bone loss after explantation was measured by CT.
  
  
  RESULTS
  On CT, there was no significant difference in bone loss between cementing techniques (p = 0.077; 95% CI -1.14 - 21.03) or the cements themselves (p = 0.345; 95% CI -6.05 - 16.70). The required time to explantation was 170.6 ± 54.89, 228.7 ± 84.5, and 145.7 ± 73.0 seconds in the first, second, and third groups, respectively.
  
  
  CONCLUSIONS
  Cement technique and type do not influence tibial bone loss in simulated revision surgery of the tibial component in knee arthroplasty.
authors.affiliation: Department of Orthopaedics and Rheumatology, University Hospital Marburg, Baldingerstrasse, 35043 Marburg, Germany. efet@med.uni-marburg.de
authors.forename: Turgay
authors.initials: T
authors.lastname: Efe
authors.forename: Jens
authors.initials: J
authors.lastname: Figiel
authors.forename: David
authors.initials: D
authors.lastname: Sibbert
authors.forename: Susanne
authors.initials: S
authors.lastname: Fuchs-Winkelmann
authors.forename: Carsten O
authors.initials: CO
authors.lastname: Tibesku
authors.forename: Nina
authors.initials: N
authors.lastname: Timmesfeld
authors.forename: Jürgen R J R
authors.initials: JR
authors.lastname: Paletta
authors.forename: Adrian
authors.initials: A
authors.lastname: Skwara
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects* / Q000295:instrumentation / Q000379:methods*; D001696:Biomechanical Phenomena / Q000502:physiology; D001843:Bone Cements / Q000009:adverse effects* / Q000737:chemistry / Q000592:standards; D001862:Bone Resorption / Q000139:chemically induced / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D011183:Postoperative Complications / Q000473:pathology / Q000503:physiopathology* / Q000517:prevention & control; D019736:Prostheses and Implants / Q000009:adverse effects / Q000592:standards; D019919:Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D013977:Tibia / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery*; D016474:Weight-Bearing / Q000502:physiology
chemical_list: D001843:Bone Cements