[Prospective randomized comparative study of early functional outcome of 2 knee joint endoprosthesis systems--rotation plateau versus fixed polyethylene inlay].
OBJECTIVE
Different systems are used for total knee arthroplasty (TKA). Compared were a press-fit femur condyle replacement system with fixed tibial PE-inlay versus a rotating tibia component system with an emphasis on the early functional results.


METHODS
Patient selection and the use of the Knee Society Score for this randomized and prospective study were based on the directives for TKA of the german Society for Orthopaedic and Trauma Surgery (DGOT). We examined the patients post-operatively after 1 week, 2 weeks, 6 weeks, 3 months, 6 months, and 1 year.


RESULTS
After 6 weeks an increase of the total knee score could be seen in both groups. The total knee score of the rotating tibia component increased from 93.96 pre-operatively to 113.57 after 6 weeks, to 139.82 after 3 months, to 154.32 after 6 months, and to 159.65 after one year. The total score with the fixed PE-inlay increased from 79.75 to 111.5 after 6 weeks, to 128.25 after 3 months, to 134.08 after 6 months, and to 130.08 after one year.


CONCLUSIONS
After 6 weeks the implant with the rotating tibia component showed a lasting higher score as compared to the implant with a fixed PE-inlay component using the same early rehabilitation and mobilization techniques.
Grodzki
T
T
Orthopädische Klinik und Poliklinik der Medizinischen Einrichtungen, Heinrich-Heine-Universität Düsseldorf.
Haak
H
H
Behrendt
R
R
Merk
H
H
Krauspe
R
R
Behrent
R
R
D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000601:surgery*; D020959:Polyethylene; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011446:Prospective Studies; D011474:Prosthesis Design; D011859:Radiography
D020959:Polyethylene
Prospektiv randomisierte Vergleichsstudie frühfunktioneller Ergebnisse zweier Kniegelenksendoprothesensysteme--Rotationsplateau versus fixiertes Polyethyleninlay.