METAPHYSEAL SLEEVES IN REVISION KNEE ARTHROPLASTY

Objectives Studying the short-term results of revision knee arthroplasties using metaphyseal sleeves.

Methods The records of 40 patients who underwent revision knee arthroplasties from 2015 to 2019. AORI type I femoral defects were diagnosed in 11 (27.5%) cases, type II - in 26 (65.0%) cases, type III - in 3 (7.5%) cases. Type I tibial defects were diagnosed in 2 (5.0%) cases, type IIa - in 24 (65.0%) cases, type IIb - in 11 (27.0%) and type III - in 3 (7.54%) cases. Metaphyseal femoral sleeves were used for 8 patients and metaphyseal tibial sleeves for 40 patients.

Results and Conclusion Follow-up period of the research was 12 to 43 (mean follow-up 32.8) months. 30 (75.0%) patients had excellent and good KSS results, and 24 (60.0%) patients had excellent and good functional KSS results. Mean score by Knee Society Total Knee Arthroplasty Roentgenographic Evaluation scale in patients with femoral and tibial metaphyseal sleeves made

2.35 and 0.375 respectively thus confirming the absence of progressive bone resorption. No aseptic instabilities in revision implants were observed. 2 (5.0%) patients had their implants extracted due to infection.

The obtained data enable to recommend metaphyseal sleeves for revision knee arthroplasties in patients with tibial and femoral AORI types II and III defects.

Stichwörter revision arthroplasty, knee joint, metaphyseal sleeves, implant survival, osteoresorption, aseptic instability.

Publication History

Article published online:
15 October 2020