Title :
Design and development of an active marker based system for analysis of 3-D pediatric foot and ankle motion
Author :
Sampath, Gautam ; Abu-Faraj, Ziad O. ; Smith, Peter A. ; Harris, Gerald F.
Author_Institution :
Dept. of Biomed. Eng., Shriners Hospital for Children, Chicago, IL, USA
fDate :
28 Oct-1 Nov 1998
Abstract :
A unique light emitting diode (LED) based active marker system was developed to track the three dimensional motion of the pediatric foot and ankle. The marker system was used with a six-camera Vicon VX (Oxford Metrics, Oxford, U.K) motion analysis system which was integrated with a three-segment biomechanical model to describe the complex multiplanar motion of the tibia, hindfoot and forefoot. The average static resolution (0.38 mm) and accuracy (99.12%) obtained with this system was better than that obtained with the authors´ comparable adult foot and ankle system. Spectral analysis revealed a distinct 30 Hz component due to video interlacing. Dynamic testing of this system has confirmed that further clinical trials are supported and feasible
Keywords :
biomechanics; biomedical equipment; biomedical measurement; light emitting diodes; motion measurement; paediatrics; 3-D pediatric foot/ankle motion; 30 Hz; active marker based system; average static resolution; clinical trials; complex multiplanar motion; dynamic testing; forefoot; hindfoot; medical instrumentation; spectral analysis; three-segment biomechanical model; tibia; video interlacing; Biomedical engineering; Cameras; Foot; Humans; Light emitting diodes; Motion analysis; Orthopedic surgery; Pediatrics; Tracking; Wire;
Conference_Titel :
Engineering in Medicine and Biology Society, 1998. Proceedings of the 20th Annual International Conference of the IEEE
Conference_Location :
Hong Kong
Print_ISBN :
0-7803-5164-9
DOI :
10.1109/IEMBS.1998.744916
