Medial Unicompartmental Arthroplasty of the Knee.


Journal Article (Review)

Indications for medial unicompartmental knee arthroplasty (UKA) have expanded over the past two decades. Proposed advantages include faster recovery, improved kinematics, and better functional outcomes compared with total knee arthroplasty (TKA) in age-matched control subjects. A focused preoperative examination and imaging is essential to identify appropriate surgical candidates. No difference has been demonstrated between fixed- and mobile-bearing implants for implant survivorship or patient-reported outcomes. The most common reasons for conversion to a TKA are aseptic loosening and progression of osteoarthritis. Ten-year survival for UKA in cohort studies has shown to be >90% with outcomes after conversion to TKA being similar to outcomes for revision TKA. Registries have consistently shown lower implant survival for UKA compared with that for TKA, which is likely secondary to use of several different implants by surgeons of varying levels of experience. UKA has the potential to be a cost-effective alternative to TKA in certain patient populations when performed at high-volume centers with advanced surgical techniques.

Full Text

Duke Authors

Cited Authors

  • Jennings, JM; Kleeman-Forsthuber, LT; Bolognesi, MP

Published Date

  • March 1, 2019

Published In

Volume / Issue

  • 27 / 5

Start / End Page

  • 166 - 176

PubMed ID

  • 30407979

Pubmed Central ID

  • 30407979

Electronic International Standard Serial Number (EISSN)

  • 1940-5480

Digital Object Identifier (DOI)

  • 10.5435/JAAOS-D-17-00690


  • eng

Conference Location

  • United States