Minimally Invasive Total Knee Arthroplasty Surgery Through Navigated Freehand Bone Cutting. Winner of the 2005 "HAP" PAUL AWARD

Hani Haider, O. Andres Barrera, Kevin L. Garvin

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

Navigated freehand bone cutting (NFC) is introduced as a concept to eliminate alignment jigs and facilitate smaller arthroplasty incisions. We compare experimental cuts with this technique to conventional jigs. Using an in-house-built computer-aided orthopedic surgery system directly navigating a bone saw, users with different levels of surgical skills were timed performing full sets of distal femoral total knee arthroplasty cuts with jigs and with NFC. The cut surfaces were digitized to measure roughness and 3-dimensional translational/rotational errors. Navigated freehand cutting was 15% faster and produced 200% rougher surfaces than jigs, although its worst peaks/valleys were less than 1.2 mm. Implant fit/looseness, assessed by special navigated tools, was similar; but alignment was 400% better with NFC. Even at its infancy, NFC appears not to prohibitively compromise time and quality of cutting. Without requiring jigs, it has potential for radically less invasive total knee arthroplasty surgery.

Original languageEnglish (US)
Pages (from-to)535-542
Number of pages8
JournalJournal of Arthroplasty
Volume22
Issue number4
DOIs
StatePublished - Jun 2007

Keywords

  • CAOS
  • MIS
  • Navigation
  • TKA
  • navigated freehand bone cutting

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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