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Title: Initial mechanical stability of cementless highly-porous titanium tibial components

Abstract

Cementless fixation in total knee replacement has seen limited use since reports of early failure surfaced in the late 80s and early 90s. However the emergence of improved biomaterials, particularly porous titanium and tantalum, has led to a renewed interest in developing a cementless tibial component to enhance long-term survivorship of the implants. Cement is commonly employed to minimize micromotion in new implants but represents a weak interface between the implant and bone. The elimination of cement and application of these new biomaterials, which theoretically provide improved stability and ultimate osseointegration, would likely result in greater knee replacement success. Additionally, the removal of cement from the procedure would help minimize surgical durations and get rid of the time needed for curing, thereby the chance of infection. The purpose of this biomechanical study was twofold. The first goal was to assess whether vibration analysis techniques can be used to evaluate and characterize initial mechanical stability of cementless implants more accurately than the traditional method of micromotion determination, which employs linear variable differential transducers (LVDTs). Second, an evaluative study was performed to determine the comparative mechanical stability of five designs of cementless tibial components under mechanical loading designed to simulate in vivomore » forces. The test groups will include a cemented Triathlon Keeled baseplate control group, three different 2-peg cementless baseplates with smooth, mid, and high roughnesses and a 4-peg cement/ess baseplate with mid-roughness.« less

Authors:
 [1];  [1];  [1];  [1];  [2]
  1. Los Alamos National Laboratory
  2. UNIV OF CONNECTICUT HEALTH CENTER
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
960618
Report Number(s):
LA-UR-08-05502; LA-UR-08-5502
TRN: US201006%%1256
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Conference
Resource Relation:
Conference: IMAC ; February 9, 2009 ; Orlando, Fl
Country of Publication:
United States
Language:
English
Subject:
56; BONE JOINTS; CEMENTS; CONTROL; CURING; FAILURES; IMPLANTS; IN VIVO; INTERFACES; MEDICAL SUPPLIES; LOADING; REMOVAL; STABILITY; SURGICAL MATERIALS; TANTALUM; TIBIA; TITANIUM; TRANSDUCERS; USES

Citation Formats

Stone, Timothy Brandon, Amer, Luke D, Warren, Christopher P, Cornwell, Phillip, and Meneghini, R Michael. Initial mechanical stability of cementless highly-porous titanium tibial components. United States: N. p., 2008. Web.
Stone, Timothy Brandon, Amer, Luke D, Warren, Christopher P, Cornwell, Phillip, & Meneghini, R Michael. Initial mechanical stability of cementless highly-porous titanium tibial components. United States.
Stone, Timothy Brandon, Amer, Luke D, Warren, Christopher P, Cornwell, Phillip, and Meneghini, R Michael. 2008. "Initial mechanical stability of cementless highly-porous titanium tibial components". United States. https://www.osti.gov/servlets/purl/960618.
@article{osti_960618,
title = {Initial mechanical stability of cementless highly-porous titanium tibial components},
author = {Stone, Timothy Brandon and Amer, Luke D and Warren, Christopher P and Cornwell, Phillip and Meneghini, R Michael},
abstractNote = {Cementless fixation in total knee replacement has seen limited use since reports of early failure surfaced in the late 80s and early 90s. However the emergence of improved biomaterials, particularly porous titanium and tantalum, has led to a renewed interest in developing a cementless tibial component to enhance long-term survivorship of the implants. Cement is commonly employed to minimize micromotion in new implants but represents a weak interface between the implant and bone. The elimination of cement and application of these new biomaterials, which theoretically provide improved stability and ultimate osseointegration, would likely result in greater knee replacement success. Additionally, the removal of cement from the procedure would help minimize surgical durations and get rid of the time needed for curing, thereby the chance of infection. The purpose of this biomechanical study was twofold. The first goal was to assess whether vibration analysis techniques can be used to evaluate and characterize initial mechanical stability of cementless implants more accurately than the traditional method of micromotion determination, which employs linear variable differential transducers (LVDTs). Second, an evaluative study was performed to determine the comparative mechanical stability of five designs of cementless tibial components under mechanical loading designed to simulate in vivo forces. The test groups will include a cemented Triathlon Keeled baseplate control group, three different 2-peg cementless baseplates with smooth, mid, and high roughnesses and a 4-peg cement/ess baseplate with mid-roughness.},
doi = {},
url = {https://www.osti.gov/biblio/960618}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 2008},
month = {Tue Jan 01 00:00:00 EST 2008}
}

Conference:
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