Validation of 3-D freehand ultrasound for the determination of the hip joint centre
Received 28 August 2009; received in revised form 15 January 2010; accepted 19 January 2010. published online 19 February 2010.
Abstract
This paper describes the calibration process for 3-D free hand ultrasound (3-DUS). The Cambridge calibration technique was determined to produce the most repeatable and accurate results when determining the location of a reference object within a water bath. This note additionally validates 3-DUS as a potential measurement tool for the determination of the hip joint centre. It shows that 3-DUS can accurately determine the inter-HJC distance to within 4±2mm. This indicates potential for 3-DUS to be used as a gold standard measurement tool in the identification of the hip joint centre.
aGait CCRE, Murdoch Children's Research Institute, Hugh Williamson Gait Laboratory, Level 3, Main Building, Royal Children's Hospital, Flemington Rd, Parkville, Victoria 3052, Australia
bSchool of Physiotherapy, The University of Melbourne, 202 Berkely St, Melbourne, Victoria 3010, Australia
Corresponding author at: Gait CCRE, Murdoch Children's Research Institute, Hugh Williamson Gait Laboratory, Level 3, Main Building, Royal Children's Hospital, Flemington Rd, Parkville, Victoria 3052, Australia. Tel.: +61 3 9345 6794.
ABSTRACT