Clinical Orthopaedics and Related Research®

, Volume 470, Issue 8, pp 2244–2252 | Cite as

Reason for Revision Influences Early Patient Outcomes After Aseptic Knee Revision

  • Paul Baker
  • Paul Cowling
  • Steven Kurtz
  • Simon Jameson
  • Paul Gregg
  • David Deehan
Clinical Research



Revision TKA less consistently produces improvements in clinical function and quality of life when compared with primary TKA. The reasons for this difference are unclear.


We determined differences in patient-reported outcomes and rates of satisfaction between primary and revision TKAs, and determine whether the reason for revision influences patient-reported outcomes after revision TKA.


We retrospectively analyzed prospectively collected patient-reported outcome measures (PROMs) for 24,190 patients (23,393 TKAs; 797 aseptic revision TKAs). We compared patient-reported outcomes using the Oxford Knee Score (OKS), EuroQol (EQ-5D), and patient satisfaction between primary TKA and revision TKA, and for subsets of the revision TKA cohort. The followup data were collected between 6 and 12 months (7 months average) postoperatively.


Improvements in the OKS (10) and EQ-5D (0.231) were smaller after revision when compared with primary TKA (OKS, 15; EQ-5D, 0.303). Patients who had revision TKA were less satisfied (66% versus 83%). Revisions for aseptic loosening or lysis were associated with the best patient outcomes (OKS improvement = 11; EQ-5D improvement = 0.232; satisfaction = 72%). Revisions for stiffness had the worst results (OKS improvement = 6; EQ-5D improvement = 0.176; satisfaction = 47%).


The early improvements in knee function and general health after revision TKA are only 69% to 76% of those observed for primary TKA. Levels of patient-reported knee function, general health, and satisfaction after revision are varied and related to the reason for revision. Even the best revision group does not approach the levels of function and satisfaction observed after primary TKA at a mean of 7 months postoperatively. Longer-term followup would be required to determine whether conclusions from these early data will need to be modified.

Level of Evidence

Level III, therapeutic study. See Guidelines for Authors for a complete description of levels of evidence.


Aseptic Loosening Knee Function Oxford Knee Score Unexplained Pain National Joint Registry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



We thank the patients and staff of all the hospitals in England and Wales who have contributed data to the National Joint Registry. We are grateful to the Healthcare Quality Improvement Partnership (HQIP), the NJR steering committee, and the staff at the NJR for facilitating this work. The authors have conformed to the NJR’s standard protocol for data access and publication. The views expressed represent those of the authors and do not necessarily reflect those of the National Joint Register Steering committee or the Health Quality Improvement Partnership (HQIP) who do not vouch for how the information is presented. We also thank Mike Reed MD, FRCS (Trauma & Orthop), for his assistance and support during the preparation of this manuscript.


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Copyright information

© The Association of Bone and Joint Surgeons® 2012

Authors and Affiliations

  • Paul Baker
    • 1
  • Paul Cowling
    • 2
  • Steven Kurtz
    • 3
  • Simon Jameson
    • 2
  • Paul Gregg
    • 2
  • David Deehan
    • 4
  1. 1.Institute of Cellular MedicineUniversity of NewcastleNewcastle upon TyneEngland
  2. 2.James Cook University HospitalMiddlesboroughEngland
  3. 3.School of Biomedical Engineering & Science and Health SystemsDrexel UniversityPhiladelphiaUSA
  4. 4.Royal Victoria InfirmaryNewcastle upon TyneEngland

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