Assessing patient-oriented results after revision total knee  arthroplasty.
BACKGROUND
Revision total knee arthroplasties (TKA) have been performed with increasing frequency over the last 25 years.


METHODS
In this study, we retrospectively analyzed 78 patients who underwent 78 revision TKAs during the years 2003–2007 with an average follow-up of 81 months (range 60–108 months). All patients were treated with a standard rotating hinge prosthesis (TC3, DePuy, Warsaw, IN, USA) due to significant instability. We evaluated the postoperative results using the Knee Society clinical rating system and the WOMAC rating system.


RESULTS
Clinical results revealed significant improvements in both scores. Complications occurred in almost one-third of the cases, with a reoperation rate of 26 %.


CONCLUSIONS
Our mid-term findings show that revision TKAs lead to an improvement in patient-perceived outcomes of physical variables. While revision TKA is a useful option for patients, procedure-associated complications should not be neglected. During the course of the procedure, it is important to collect patient-oriented data and focus on responsive and valid scores.
Clemens
C
Baier
Christian
C
Lüring
Jens
J
Schaumburger
Franz
F
Köck
Johannes
J
Beckmann
Markus
M
Tingart
Florian
F
Zeman
Joachim
J
Grifka
Hans-Robert
HR
Springorum
D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects* / Q000379:methods; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D005858:Germany; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000175:diagnosis / Q000601:surgery*; D010147:Pain Measurement; D010149:Postoperative Pain / Q000503:physiopathology*; D017060:Patient Satisfaction / Q000706:statistics & numerical data; D011475:Prosthesis Failure; D016059:Range of Motion, Articular / Q000502:physiology; D012086:Reoperation / Q000379:methods; D012189:Retrospective Studies; D018570:Risk Assessment; D012647:Self-Assessment; D012720:Severity of Illness Index; D013997:Time Factors; D016896:Treatment Outcome