In vivo flexion and kinematics of the knee after TKA: Comparison of a conventional and a high flexion cruciate-retaining TKA design

Jeremy F. Suggs, Young Min Kwon, Sridhar M. Durbhakula, George R. Hanson, Guoan Li

Research output: Contribution to journalArticle

Abstract

This study investigated the in vivo 6DOF knee kinematics and tibiofemoral contact location after total knee arthroplasty using a conventional and a high flexion cruciate retaining component (15 NexGen CR, 11 NexGen CR-Flex). Each patient performed a single-leg lunge while being imaged by a dual fluoroscopic imaging system. Data were analyzed at hyperextension, 0° to 90° in 15° intervals, and at maximum flexion. The average maximum weight-bearing flexion for all the CR patients was 110.1° ± 13.4°, and for all the CR-Flex patients was 108.2° ± 13.2°. No difference was seen in the maximum flexion achieved by the patients, and the kinematics demonstrated by the groups was similar. However, at high flexion, the tibiofemoral articulating surfaces were more conforming in the CR-Flex design than the CR design, suggesting that the use of the high flexion component improved the tibiofemoral contact environment at high flexion in patients who could achieve high flexion.

Original languageEnglish (US)
Pages (from-to)150-156
Number of pages7
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Volume17
Issue number2
DOIs
StatePublished - Feb 2009
Externally publishedYes

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Biomechanical Phenomena
Knee
Knee Replacement Arthroplasties
Weight-Bearing
Leg

Keywords

  • Biomechanics
  • High flexion
  • In vivo kinematics
  • Knee
  • Total knee arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Surgery

Cite this

In vivo flexion and kinematics of the knee after TKA : Comparison of a conventional and a high flexion cruciate-retaining TKA design. / Suggs, Jeremy F.; Kwon, Young Min; Durbhakula, Sridhar M.; Hanson, George R.; Li, Guoan.

In: Knee Surgery, Sports Traumatology, Arthroscopy, Vol. 17, No. 2, 02.2009, p. 150-156.

Research output: Contribution to journalArticle

Suggs, Jeremy F. ; Kwon, Young Min ; Durbhakula, Sridhar M. ; Hanson, George R. ; Li, Guoan. / In vivo flexion and kinematics of the knee after TKA : Comparison of a conventional and a high flexion cruciate-retaining TKA design. In: Knee Surgery, Sports Traumatology, Arthroscopy. 2009 ; Vol. 17, No. 2. pp. 150-156.
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