Recoil-implantation of multiple radioisotopes towards wear rate measurements and particle tracing in rosthetic joints

Jacob A. Warner, Paul N. Smith, Jennifer M. Scarvell, Laura Gladkis, Heiko Timmers

Research output: A Conference proceeding or a Chapter in BookConference contribution

1 Citation (Scopus)

Abstract

This study demonstrates a new method of radioisotope labeling of ultra-high molecular weight polyethylene nserts in prosthetic joints for wear studies. The radioisotopes 97Ru, 100Pd, 100Rh, and 101mRh are produced in fusion evaporation reactions induced by 12C ions in a 92Zr target foil. The fusion products recoil-implant into ultra-high molecular weight polyethylene plugs, machined to fit into the surface of the inserts. During laboratory simulations of the oint motion, a wear rate of the labeled polyethylene may be measured and the pathways of wear debris particles can be raced by detecting characteristic gamma-rays. The concentration profiles of the radioisotopes extend effectively niformly from the polyethylene surface to a depth of about 4 μhe multiplicity of labeling and the use of several gamma-ray lines aids with avoiding systematic measurement uncertainties. Two polyethylene plugs were labeled and one was fitted into the surface of the tibial insert of a knee prosthesis, which had been worn in. Actuation over close to 00,000 cycles with a 900 N axial load and a 24°ion angle removed (14 ± 1) % of the gamma-ray activity from the plug. Most of this activity dispersed into the serum lubricant identifying this as the important debris pathway. Less than % activity was transferred to the femoral component of the prosthesis and the measured activity on the tibial tray was insignificant. Assuming uniform wear across the superior surface of the insert, a wear rate of (12 ± 3) mm3/Megacycle was determined. This is consistent with wear rate measurements under similar conditions using other techniques.

Original languageEnglish
Title of host publicationApplication of Accelerators in Research and Industry - Twenty-First International Conference, CAARI 2010
Pages655-659
Number of pages5
Volume1336
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event21st International Conference on Application of Accelerators in Research and Industry, CAARI 2010 - Fort Worth, TX, United States
Duration: 8 Aug 201013 Aug 2010

Conference

Conference21st International Conference on Application of Accelerators in Research and Industry, CAARI 2010
CountryUnited States
CityFort Worth, TX
Period8/08/1013/08/10

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tracing
implantation
polyethylenes
inserts
plugs
gamma rays
debris
marking
molecular weight
fusion
trays
axial loads
lubricants
actuation
serums
foils
evaporation
cycles
products
profiles

Cite this

Warner, J. A., Smith, P. N., Scarvell, J. M., Gladkis, L., & Timmers, H. (2011). Recoil-implantation of multiple radioisotopes towards wear rate measurements and particle tracing in rosthetic joints. In Application of Accelerators in Research and Industry - Twenty-First International Conference, CAARI 2010 (Vol. 1336, pp. 655-659) https://doi.org/10.1063/1.3586183
Warner, Jacob A. ; Smith, Paul N. ; Scarvell, Jennifer M. ; Gladkis, Laura ; Timmers, Heiko. / Recoil-implantation of multiple radioisotopes towards wear rate measurements and particle tracing in rosthetic joints. Application of Accelerators in Research and Industry - Twenty-First International Conference, CAARI 2010. Vol. 1336 2011. pp. 655-659
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abstract = "This study demonstrates a new method of radioisotope labeling of ultra-high molecular weight polyethylene nserts in prosthetic joints for wear studies. The radioisotopes 97Ru, 100Pd, 100Rh, and 101mRh are produced in fusion evaporation reactions induced by 12C ions in a 92Zr target foil. The fusion products recoil-implant into ultra-high molecular weight polyethylene plugs, machined to fit into the surface of the inserts. During laboratory simulations of the oint motion, a wear rate of the labeled polyethylene may be measured and the pathways of wear debris particles can be raced by detecting characteristic gamma-rays. The concentration profiles of the radioisotopes extend effectively niformly from the polyethylene surface to a depth of about 4 μhe multiplicity of labeling and the use of several gamma-ray lines aids with avoiding systematic measurement uncertainties. Two polyethylene plugs were labeled and one was fitted into the surface of the tibial insert of a knee prosthesis, which had been worn in. Actuation over close to 00,000 cycles with a 900 N axial load and a 24°ion angle removed (14 ± 1) {\%} of the gamma-ray activity from the plug. Most of this activity dispersed into the serum lubricant identifying this as the important debris pathway. Less than {\%} activity was transferred to the femoral component of the prosthesis and the measured activity on the tibial tray was insignificant. Assuming uniform wear across the superior surface of the insert, a wear rate of (12 ± 3) mm3/Megacycle was determined. This is consistent with wear rate measurements under similar conditions using other techniques.",
keywords = "Ion implantation, Radioisotope tracing, Thin layer activation, UHMWPE",
author = "Warner, {Jacob A.} and Smith, {Paul N.} and Scarvell, {Jennifer M.} and Laura Gladkis and Heiko Timmers",
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Warner, JA, Smith, PN, Scarvell, JM, Gladkis, L & Timmers, H 2011, Recoil-implantation of multiple radioisotopes towards wear rate measurements and particle tracing in rosthetic joints. in Application of Accelerators in Research and Industry - Twenty-First International Conference, CAARI 2010. vol. 1336, pp. 655-659, 21st International Conference on Application of Accelerators in Research and Industry, CAARI 2010, Fort Worth, TX, United States, 8/08/10. https://doi.org/10.1063/1.3586183

Recoil-implantation of multiple radioisotopes towards wear rate measurements and particle tracing in rosthetic joints. / Warner, Jacob A.; Smith, Paul N.; Scarvell, Jennifer M.; Gladkis, Laura; Timmers, Heiko.

Application of Accelerators in Research and Industry - Twenty-First International Conference, CAARI 2010. Vol. 1336 2011. p. 655-659.

Research output: A Conference proceeding or a Chapter in BookConference contribution

TY - GEN

T1 - Recoil-implantation of multiple radioisotopes towards wear rate measurements and particle tracing in rosthetic joints

AU - Warner, Jacob A.

AU - Smith, Paul N.

AU - Scarvell, Jennifer M.

AU - Gladkis, Laura

AU - Timmers, Heiko

PY - 2011

Y1 - 2011

N2 - This study demonstrates a new method of radioisotope labeling of ultra-high molecular weight polyethylene nserts in prosthetic joints for wear studies. The radioisotopes 97Ru, 100Pd, 100Rh, and 101mRh are produced in fusion evaporation reactions induced by 12C ions in a 92Zr target foil. The fusion products recoil-implant into ultra-high molecular weight polyethylene plugs, machined to fit into the surface of the inserts. During laboratory simulations of the oint motion, a wear rate of the labeled polyethylene may be measured and the pathways of wear debris particles can be raced by detecting characteristic gamma-rays. The concentration profiles of the radioisotopes extend effectively niformly from the polyethylene surface to a depth of about 4 μhe multiplicity of labeling and the use of several gamma-ray lines aids with avoiding systematic measurement uncertainties. Two polyethylene plugs were labeled and one was fitted into the surface of the tibial insert of a knee prosthesis, which had been worn in. Actuation over close to 00,000 cycles with a 900 N axial load and a 24°ion angle removed (14 ± 1) % of the gamma-ray activity from the plug. Most of this activity dispersed into the serum lubricant identifying this as the important debris pathway. Less than % activity was transferred to the femoral component of the prosthesis and the measured activity on the tibial tray was insignificant. Assuming uniform wear across the superior surface of the insert, a wear rate of (12 ± 3) mm3/Megacycle was determined. This is consistent with wear rate measurements under similar conditions using other techniques.

AB - This study demonstrates a new method of radioisotope labeling of ultra-high molecular weight polyethylene nserts in prosthetic joints for wear studies. The radioisotopes 97Ru, 100Pd, 100Rh, and 101mRh are produced in fusion evaporation reactions induced by 12C ions in a 92Zr target foil. The fusion products recoil-implant into ultra-high molecular weight polyethylene plugs, machined to fit into the surface of the inserts. During laboratory simulations of the oint motion, a wear rate of the labeled polyethylene may be measured and the pathways of wear debris particles can be raced by detecting characteristic gamma-rays. The concentration profiles of the radioisotopes extend effectively niformly from the polyethylene surface to a depth of about 4 μhe multiplicity of labeling and the use of several gamma-ray lines aids with avoiding systematic measurement uncertainties. Two polyethylene plugs were labeled and one was fitted into the surface of the tibial insert of a knee prosthesis, which had been worn in. Actuation over close to 00,000 cycles with a 900 N axial load and a 24°ion angle removed (14 ± 1) % of the gamma-ray activity from the plug. Most of this activity dispersed into the serum lubricant identifying this as the important debris pathway. Less than % activity was transferred to the femoral component of the prosthesis and the measured activity on the tibial tray was insignificant. Assuming uniform wear across the superior surface of the insert, a wear rate of (12 ± 3) mm3/Megacycle was determined. This is consistent with wear rate measurements under similar conditions using other techniques.

KW - Ion implantation

KW - Radioisotope tracing

KW - Thin layer activation

KW - UHMWPE

UR - http://www.scopus.com/inward/record.url?scp=79960136622&partnerID=8YFLogxK

U2 - 10.1063/1.3586183

DO - 10.1063/1.3586183

M3 - Conference contribution

SN - 9780735408913

VL - 1336

SP - 655

EP - 659

BT - Application of Accelerators in Research and Industry - Twenty-First International Conference, CAARI 2010

ER -

Warner JA, Smith PN, Scarvell JM, Gladkis L, Timmers H. Recoil-implantation of multiple radioisotopes towards wear rate measurements and particle tracing in rosthetic joints. In Application of Accelerators in Research and Industry - Twenty-First International Conference, CAARI 2010. Vol. 1336. 2011. p. 655-659 https://doi.org/10.1063/1.3586183