A comparison of variable angle versus fixed angle distal femoral resection in primary total knee arthroplasty

The Journal of Arthroplasty
Angela H Deakin, Martin Sarungi

Abstract

This study assessed whether using a variable distal valgus resection angle improved post-operative coronal lower limb alignment in total knee arthroplasty (TKA). Two groups were compared: Fixed (n = 124), where a fixed distal valgus resection angle of 7° was used; Variable (n = 87), where the resection angle was adjusted to the measured femoral mechanical anatomical (FMA) angle of the patient. FMA and mechanical femoro-tibial (MFT) angles were measured on pre-operative and post-operative hip-knee-ankle radiographs. 85% of patients in the Variable group had a post-operative MFT angle within 0° ± 3°compared to 69% in the Fixed group (P = 0.006). The use of a fixed distal femoral resection angle for all patients is not appropriate. Setting the resection to an individual patient's FMA angle can significantly improve the post-operative MFT angle.

References

Apr 1, 1984·Acta Orthopaedica Scandinavica·I Hvid, S Nielsen
Nov 9, 2002·The Knee·Tomihisa KoshinoTomoyuki Saito
Feb 3, 2007·The Journal of Bone and Joint Surgery. American Volume·Kai BauwensDirk Stengel
Dec 15, 2007·The Journal of Arthroplasty·J Bohannon MasonKyle Fahrbach
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Sep 17, 2010·The Journal of Bone and Joint Surgery. American Volume·Sebastien ParratteDaniel J Berry

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Citations

Sep 26, 2014·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Günther MaderbacherArmin Keshmiri
Aug 6, 2014·Journal of Zhejiang University. Science. B·Tong LiuZhong-li Gao
Jan 2, 2015·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Xiaojun ShiFuxing Pei
Nov 1, 2018·Revista Brasileira De Ortopedia·João Bosco Sales NogueiraJosé Alberto Dias Leite
Jul 2, 2018·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Maurin LampartMichael T Hirschmann
Nov 30, 2018·Journal of Comparative Effectiveness Research·Ya-Fei QinHui Li
Apr 17, 2019·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Silvan HessMichael T Hirschmann

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