Lateral unicompartimental knee arthroplasty: Indications, technique and short-medium term results

Piero Volpi, Luca Marinoni, Corrado Bait, Marco Galli, Matteo Denti

Research output: Contribution to journalArticle


Lateral unicompartmental knee arthroplasty (UKA) is a valid alternative treatment in the event of arthritis confined to the lateral compartment. This paper examines its indications, technique and short to medium-term results. A total of 159 Miller-Galante cemented UKA prostheses (Zimmer, Warsaw, Indiana) were implanted consecutively (131 medial and 28 lateral) by the same surgeon. This study investigates 28 lateral UKAs in 27 patients. Twenty-five implants in 24 patients (including a subject operated bilaterally) were followed up for 12-60 months. Three patients were discarded on account of to short a follow-up period. The Hospital for Special Surgery (HSS) knee score was used to compare the pre- and post-operative results of the lateral UKA patients. The HSS score improved from a pre-op mean of 59.92 (range 48-68) to 88.04 (range 71-95) at the last follow-up. There was a positive increase in the pain, function and ROM components of the score. The lateral UKA prosthesis can be regarded as a sound alternative to total knee replacement. Correct patient selection on the basis of optimum surgical indications, however, is essential.

Original languageEnglish
Pages (from-to)1028-1034
Number of pages7
JournalKnee Surgery, Sports Traumatology, Arthroscopy
Issue number8
Publication statusPublished - Aug 2007


  • Arthritic genu valgum
  • Lateral knee arthritis
  • Unicompartimental knee arthroplasty (UKA)
  • Unicompartmental lateral arthroplasty
  • Unicondylar arthroplasty

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Surgery

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