Medium to long-term results of the UNIX uncemented unicompartmental knee replacement

Matthew J. Hall, David A. Connell, Hayden G. Morris

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)


Introduction: We report the first non-designer study of the Unix uncemented unicompartmental knee prosthesis. Materials and methods: Eighty-five consecutive UKRs were carried out with sixty-five available for follow-up. Oxford Knee Scores, WOMAC questionnaire and radiological assessment were completed. Results: The mean Oxford Knee Score was thirty-eight and WOMAC Score was twenty. Overall Kaplan Meier survival estimate is 76% (95% confidence interval 60%-97%) at 12. years and 88% (95% confidence interval 76-100%) with aseptic loosening as the endpoint. Radiographic assessment showed lysis in the tibia in 6% of patients with no lysis evident around the central fin. Discussion: Survivorship is comparable to other published series of UKRs. We suggest the central fin design is key to dissipating large forces throughout the proximal tibia, resulting in low levels of tibial loosening.Level of evidence IV.

Original languageEnglish
Pages (from-to)328-331
Number of pages4
Issue number5
Publication statusPublished - Oct 2013
Externally publishedYes


  • Radiolucent lines
  • Tibial loosening
  • Unicompartmental knee replacement
  • Unix

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