Effect of Posterior Tibial Slope on Flexion and Anterior-Posterior Tibial Translation in Posterior Cruciate-Retaining Total Knee Arthroplasty

Andrew W. Chambers, Addison R. Wood, Victor Kosmopoulos, Hugo B. Sanchez, Russell A. Wagner

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Reduced posterior tibial slope (PTS) and posterior tibiofemoral translation (PTFT) in posterior cruciate-retaining (PCR) total knee arthroplasty (TKA) may result in suboptimal flexion. We evaluated the relationship between PTS, PTFT, and total knee flexion after PCR TKA in a cadaveric model. We performed a balanced PCR TKA using 9 transfemoral cadaver specimens and changed postoperative PTS in 1° increments. We measured maximal flexion and relative PTFT at maximal flexion. We determined significant changes in flexion and PTFT as a function of PTS. Findings showed an average increase in flexion of 2.3° and average PTFT increase of 1. mm per degree of PTS increase when increasing PTS from 1° to 4° (P<.05). Small initial increases in PTS appear to significantly increase knee flexion and PTFT.

Original languageEnglish
Pages (from-to)103-106
Number of pages4
JournalJournal of Arthroplasty
Volume31
Issue number1
DOIs
StatePublished - 1 Jan 2016

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Knee Replacement Arthroplasties
Knee
Cadaver

Keywords

  • Maximum flexion
  • Posterior tibial slope
  • Posterior tibial translation
  • Primary knee arthroplasty
  • Tibiofemoral translation
  • Total knee replacement

Cite this

Chambers, Andrew W. ; Wood, Addison R. ; Kosmopoulos, Victor ; Sanchez, Hugo B. ; Wagner, Russell A. / Effect of Posterior Tibial Slope on Flexion and Anterior-Posterior Tibial Translation in Posterior Cruciate-Retaining Total Knee Arthroplasty. In: Journal of Arthroplasty. 2016 ; Vol. 31, No. 1. pp. 103-106.
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abstract = "Reduced posterior tibial slope (PTS) and posterior tibiofemoral translation (PTFT) in posterior cruciate-retaining (PCR) total knee arthroplasty (TKA) may result in suboptimal flexion. We evaluated the relationship between PTS, PTFT, and total knee flexion after PCR TKA in a cadaveric model. We performed a balanced PCR TKA using 9 transfemoral cadaver specimens and changed postoperative PTS in 1° increments. We measured maximal flexion and relative PTFT at maximal flexion. We determined significant changes in flexion and PTFT as a function of PTS. Findings showed an average increase in flexion of 2.3° and average PTFT increase of 1. mm per degree of PTS increase when increasing PTS from 1° to 4° (P<.05). Small initial increases in PTS appear to significantly increase knee flexion and PTFT.",
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Effect of Posterior Tibial Slope on Flexion and Anterior-Posterior Tibial Translation in Posterior Cruciate-Retaining Total Knee Arthroplasty. / Chambers, Andrew W.; Wood, Addison R.; Kosmopoulos, Victor; Sanchez, Hugo B.; Wagner, Russell A.

In: Journal of Arthroplasty, Vol. 31, No. 1, 01.01.2016, p. 103-106.

Research output: Contribution to journalArticle

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