Waterjet cutting of periprosthetic interface tissue in loosened hip prostheses: An in vitro feasibility study

Gert Kraaij*, Gabrielle J.M. Tuijthof, Jenny Dankelman, Rob G.H.H. Nelissen, Edward R. Valstar

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)

Abstract

Waterjet cutting technology is considered a promising technology to be used for minimally invasive removal of interface tissue surrounding aseptically loose hip prostheses. The goal of this study was to investigate the feasibility of waterjet cutting of interface tissue membrane. Waterjets with 0.2mm and 0.6mm diameter, a stand-off distance of 5mm, and a traverse speed of 0.5mm/s were used to cut interface tissue samples in half. The water flow through the nozzle was controlled by means of a valve. By changing the flow, the resulting waterjet pressure was regulated. Tissue sample thickness and the required waterjet pressures were measured. Mean thickness of the samples tested within the 0.2mm nozzle group was 2.3mm (SD 0.7mm) and within the 0.6mm nozzle group 2.6mm (SD 0.9mm). The required waterjet pressure to cut samples was between 10 and 12MPa for the 0.2mm nozzle and between 5 and 10MPa for the 0.6mm nozzle. Cutting bone or bone cement requires about 3 times higher waterjet pressure (30-50MPa, depending on used nozzle diameter) and therefore we consider waterjet cutting as a safe technique to be used for minimally invasive interface tissue removal.

Original languageEnglish
Pages (from-to)245-250
Number of pages6
JournalMedical Engineering and Physics
Volume37
Issue number2
DOIs
Publication statusPublished - 1 Feb 2015
Externally publishedYes

Keywords

  • Hip prosthesis
  • Interface membrane
  • Loosening
  • Orthopedic surgery
  • Waterjet cutting
  • n/a OA procedure

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