Onlay tibial implants appear to provide superior clinical results in robotic unicompartmental knee arthroplasty.

ABSTRACT:

Background

Unicompartmental knee arthroplasty (UKA) is an increasingly popular option for the treatment of single-compartment knee osteoarthritis (OA) in adults. Two options for tibial resurfacing during UKA are (1) all-polyethylene inlays and (2) metal-backed onlays.

Questions/purposes

The aim of this study was to determine whether there are any differences in clinical outcomes with inlay versus onlay tibial components.

Patients and methods

We identified 39 inlays and 45 onlays, with average 2.7- and 2.3-year follow-up, respectively, from a prospective robotic-assisted surgery database. The primary outcome was the Western Ontario and McMaster University Arthritis Index (WOMAC), subcategorized by the pain, stiffness, and function subscores, at 2 years postoperatively.

SUBMITTER: Gladnick BP 

PROVIDER: S-EPMC4342394 | biostudies-literature | 2015 Feb

REPOSITORIES: biostudies-literature