Document

Clinical outcomes of different alignment strategies in medial UKA

Description

Purpose: To investigate the correlation between postoperative limb/component alignments and clinical/functional outcomes following medial unicondylar knee arthroplasty (mUKA).

Methods: Inclusion criteria included peer-reviewed English- or German-language publications assessing postoperative limb or implant alignment and clinical outcomes of mUKA. Methodological Index for Non-Randomized Studies (MINORS) was used to assess article quality.

Results: A total of 2767 knees from 2604 patients were evaluated. 1-4° HKA group had better WOMAC. Varus HKA alignments were however associated with lower OKS scores, while the 0° to -2.5° tibiofemoral angle (TFA) group showed superior KSS scores. For the tibia component coronal angle (TCCA), most authors identified the -2.5° to 5° range as associated with the best clinical and functional outcomes

Conclusions: Optimal outcomes in mUKA were associated with a 1°-4° coronal limb alignment. The tibia implant component performed well within a -2.5° to 5° alignment range. An external rotation of 4°-5° was recommended for the tibia component, while internal rotation correlated negatively with the femoral component.

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Authors

Manuel-Paul Sava

Dr. med.

Kantonsspital Baselland

A L

Alexandra Leica

Dr. med.

Kantonsspital Baselland

I S

Isbael Scala

Dr. med.

Faculty of Biomedical Sciences, University of Italian Switzerland

J B

Johannes Beckamnn

Prof. Dr. med.

Krankenhaus Barmherzige Brüder München

M T

Michael T. Hirschmann

Prof. Dr. med.

Kantonsspital Baselland

ESSKA Continuous Professional Education Partners