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. 2013 Mar;25(1):25-9.
doi: 10.5792/ksrr.2013.25.1.25. Epub 2013 Feb 27.

Clinical results associated with changes of posterior tibial slope in total knee arthroplasty

Seung Suk Seo  1 , Chang Wan Kim, Jung Han Kim, Young Kyoung Min
Affiliations

Clinical results associated with changes of posterior tibial slope in total knee arthroplasty

Seung Suk Seo et al. Knee Surg Relat Res. 2013 Mar.

Abstract

Purpose: The purpose of this retrospective study is to investigate the effect of posterior tibial slope (PTS) on clinical results in total knee replacement arthroplasty (TKA).

Materials and methods: We analyzed 801 knees in 768 patients who underwent TKA using a cruciate-retaining prosthesis for osteoarthritis from July 2003 to July 2009. PTS was measured on simple X-ray films and patients were divided into 5 groups, according to the change in PTS that was calculated by subtracting the preoperative from the postoperative PTS: group 1, >3°; group 2, 3° to 1°; group 3, 1° to -1°; group 4, -1° to -3°; and group 5, <-3°. We analyzed the correlations between the change in PTS and clinical results, such as Knee Society knee score, Knee Society functional score, Feller patella score, Kujala score, visual analog scale score, range of motion, and complications.

Results: There was no statistically significant intergroup difference; however, Feller patella score and Kujala score were significantly different in groups 2 and 3. There were no complications, such as progressive loosening of implants, fractures of polyethylene inserts and wears.

Conclusions: Clinically meaningful improvement was observed in all patients after TKA. Groups 2 and 3 (3° to -1°) showed significant improvement compared to the other groups.

Keywords: Arthroplasty; Knee; Posterior tibial slope; Total knee replacement.

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Conflict of interest statement

No potential conflict of interest relevant to this article was reported.

Figures

Fig. 1
Fig. 1
(A) Preoperative tibial posterior slope line was measured by perpendicular line of proximal tibia anterior cortex and tibial medial plateau line. (B) Postoperative tibial posterior slope line was measured by perpendicular line of proximal tibia anterior cortex and tibial medial plateau line.
See this image and copyright information in PMC

References

    1. Dejour H, Bonnin M. Tibial translation after anterior cruciate ligament rupture: two radiological tests compared. J Bone Joint Surg Br. 1994;76:745–749. - PubMed
    1. Hernigou P, Deschamps G. Posterior slope of the tibial implant and the outcome of unicompartmental knee arthroplasty. J Bone Joint Surg Am. 2004;86:506–511. - PubMed
    1. Kim KC, Choi JY, Kim JS, Chung HJ, Koo BS, Won SY. Influence of the posterior slope of the tibial component on the maximal flexion after total knee arthroplasty. J Korean Knee Soc. 1998;10:13–17.
    1. Catani F, Leardini A, Ensini A, Cucca G, Bragonzoni L, Toksvig-Larsen S, Giannini S. The stability of the cemented tibial component of total knee arthroplasty: posterior cruciate-retaining versus posterior-stabilized design. J Arthroplasty. 2004;19:775–782. - PubMed
    1. Seo JG, Moon YW, Kim JH. Influence of posterior tibial slope on stability after total knee arthroplasty. J Korean Knee Soc. 2007;19:218–224.

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