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International Orthopaedics

, Volume 38, Issue 2, pp 291–295 | Cite as

Impact of the tibial slope on range of motion after low-contact-stress, mobile-bearing, total knee arthroplasty

  • Norbert Kastner
  • Simon Sternbauer
  • Jörg Friesenbichler
  • Ines Vielgut
  • Matthias Wolf
  • Mathias Glehr
  • Andreas Leithner
  • Patrick SadoghiEmail author
Original Paper

Abstract

Purpose

The aim of this study was to analyse a possible correlation between the tibial slope and range of motion (ROM) after implantation of the low-contact-stress (LCS), mobile-bearing, total knee arthroplasty (TKA) after a minimum follow-up of ten years.

Methods

Eighty-three TKAs in 66 patients were investigated in this retrospective correlation analysis at a minimum follow up of ten years. Out of these 66 patients, 50 were women (76 %) and 16 (24 %) were men. The average age of these patients at the time of the examination was 76 years [standard deviation (SD) 11 years, range 37–95 years]. A lateral X-ray was taken at follow-up in order to analyse the tibial slope with respect to inter- and intra-observer agreement. ROM was measured and correlated with the tibial slope.

Results

The mean active ROM was 96.1° (SD 18.8) and the mean tibial slope after four measurements was 7.65° (SD 4.23), with substantial inter- and intra-observer agreement. We found no significant correlation between tibial slope and ROM in patients with a minimum follow-up of ten years [correlation 0.196 (p > 0.05) and 0.152, (p > 0.05), respectively].

Conclusions

Alteration of the tibial slope does not significantly influence ROM after implantation of the LCS TKA at a minimum follow-up of ten years. We conclude that the tibial slope is not the primary influencing factor for ROM in patients ten years after primary TKA and believe that it should not substantially be altered during surgery.

Keywords

Tibial slope Radiologic measurement Radiography Correlation analysis Range of motion 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Norbert Kastner
    • 1
  • Simon Sternbauer
    • 1
  • Jörg Friesenbichler
    • 1
  • Ines Vielgut
    • 1
  • Matthias Wolf
    • 1
  • Mathias Glehr
    • 1
  • Andreas Leithner
    • 1
  • Patrick Sadoghi
    • 1
    Email author
  1. 1.Department of Orthopaedic SurgeryMedical University of GrazGrazAustria

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