Effect of anterior-posterior and internal-external motion restraint during knee wear simulation on a posterior stabilised knee design

Thomas M. Grupp, Khaled J. Saleh, William Mihalko, Martin Hintner, Bernhard Fritz, Christoph Schilling, Jens Schwiesau, Christian Kaddick

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The objective of our study was to examine the effect of biphaseal AP translation and IE rotation restraint, using a system defined specifically for posterior stabilised knee designs, on wear, kinematics and particle release in comparison to linear motion restraint as required by the established ISO 14243-1:2002(E) protocol. In the ISOlinear groups, an AP motion restraint of 30. N/mm and an IE rotation restraint of 0.6. Nm/° were applied in the knee wear simulation. In the ISOgap biphaseal groups with PCL sacrificing implants, the restraining AP force was zero in a ±2.5. mm range with, externally, a constant of 9.3. N/mm applied proportionally to the AP translation of the tibia plateau, whereas the restraining IE torque was zero in a ±6° range with, externally, a constant of 0.13. Nm/° applied proportionally to the IE rotation of the tibia plateau. Using the ISOgap biphaseal protocol on a posterior stabilised knee design, we found an increase of 41% in AP translation and of 131% in IE rotation, resulting in a 3.2-fold higher wear rate compared to the results obtained using the ISOlinear protocol. Changes in AP translation and IE rotation ligament motion restraints have a high impact on knee joint kinematics and wear behaviour of a fixed bearing posterior stabilised knee design.

Original languageEnglish (US)
Pages (from-to)491-497
Number of pages7
JournalJournal of Biomechanics
Volume46
Issue number3
DOIs
StatePublished - Feb 1 2013

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Knee
Wear of materials
Tibia
Biomechanical Phenomena
Kinematics
Bearings (structural)
Ligaments
Torque
Knee Joint

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Orthopedics and Sports Medicine
  • Biomedical Engineering
  • Rehabilitation

Cite this

Effect of anterior-posterior and internal-external motion restraint during knee wear simulation on a posterior stabilised knee design. / Grupp, Thomas M.; Saleh, Khaled J.; Mihalko, William; Hintner, Martin; Fritz, Bernhard; Schilling, Christoph; Schwiesau, Jens; Kaddick, Christian.

In: Journal of Biomechanics, Vol. 46, No. 3, 01.02.2013, p. 491-497.

Research output: Contribution to journalArticle

Grupp, Thomas M. ; Saleh, Khaled J. ; Mihalko, William ; Hintner, Martin ; Fritz, Bernhard ; Schilling, Christoph ; Schwiesau, Jens ; Kaddick, Christian. / Effect of anterior-posterior and internal-external motion restraint during knee wear simulation on a posterior stabilised knee design. In: Journal of Biomechanics. 2013 ; Vol. 46, No. 3. pp. 491-497.
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