J Knee Surg
DOI: 10.1055/a-2796-8647
Original Article

No Consensus on the Role of Component Rotation in Postoperative Outcomes After Total Knee Arthroplasty: A Systematic Review

Authors

  • Stefan Gelderman

    1   Department of Orthopaedic Surgery, Deventer Hospital, Deventer, The Netherlands
  • Hans Peter van Jonbergen

    1   Department of Orthopaedic Surgery, Deventer Hospital, Deventer, The Netherlands
  • Ellie Landman

    1   Department of Orthopaedic Surgery, Deventer Hospital, Deventer, The Netherlands
  • Ydo Kleinlugtenbelt

    2   Department of Orthopaedic and Trauma Surgery, Deventer Hospital, Deventer, The Netherlands

Abstract

Up to 20% of patients report dissatisfaction after total knee arthroplasty (TKA), often due to unexplained long-term pain. Component malrotation has been proposed as a contributing factor. This systematic review aimed to evaluate the association between component malrotation and patient-reported outcome measures (PROMs). A systematic search was conducted in PubMed/Medline, Embase, and the Cochrane Library. Studies assessing the effect of femoral, tibial, combined rotation, or rotational mismatch on PROMs were included. Methodological quality was assessed using the Joanna Briggs Institute manual, and evidence levels were assigned based on the Oxford Levels of Evidence. A total of 22 studies involving 1,943 patients met the inclusion criteria. No consistent association was found between component rotation, whether femoral, tibial, combined, or mismatch, and PROMs. There is no clear consensus on the impact of component malrotation on PROMs. However, combined malrotation and rotational mismatch may influence outcomes more than isolated femoral or tibial rotation. Further, high-quality, Level 1 studies are needed to define optimal rotational alignment in TKA.

Contributors' Statement

All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by S.G. and H.P.J. The first draft of the manuscript was written by S.G. and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.


Ethics Approval

The protocol for this systematic review was registered with the Prospero database (registration number CRD42020188580).




Publication History

Received: 15 September 2025

Accepted: 24 January 2026

Accepted Manuscript online:
28 January 2026

Article published online:
12 February 2026

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