Clinical and radiological results of high flex total knee arthroplasty: a 5 year follow-up.
BACKGROUND
In a prospective randomized study, we compared the results after implantation of the mobile bearing high flex TKA with a fixed bearing posterior stabilized TKA in 60 patients (30 patients each group).


METHODS
We evaluated the hospital for special surgery-score (HSS) and different radiological parameters preoperatively, as well as 3 months, 3 and 5 years postoperatively.


RESULTS
Three months postoperatively, the high flex group showed better results in scores for pain, ROM (122.5 degrees vs. 107.33 degrees), as well as in the overall HSS (87.21 vs. 82.68 points). Three and 5 years postoperatively, there were no differences between both the groups in all scores, but the HSS is still increasing.


CONCLUSIONS
The theoretical advantages of the mobile bearing knee prostheses were reflected in the clinical results, only partly and temporarily.
Department of Orthopedic Surgery, Martin Luther University Halle-Wittenberg, Magdeburger Strasse 22, 06112, Halle, Germany. david.wohlrab@medizin.uni-halle.de
David
D
Wohlrab
Robert
R
Hube
Alexander
A
Zeh
Werner
W
Hein
D000368:Aged; D019645:Arthroplasty, Replacement, Knee / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging* / Q000502:physiology; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery; D011859:Radiography; D016059:Range of Motion, Articular