A stress wave propagation technique for bone repair study.
ABSTRACT The diagnosis of bone fracture and its rate of healing still remains a problem among orthopedic surgeons. An acoustic technique based on stress-wave propagation is developed. The technique is used on laboratory experimental in vitro bones, as well as on in vivo (human) bones, to diagnose a fracture. The rate of healing of the fracture is also studied. The technique developed is quick, economical, reliable, portable, and safe for both the patient and the operator.
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ABSTRACT: Preliminary bioelectrical potential distribution measurements of healing rabbit tibia partial mid-diaphysis osteotomies during the fracture healing process are reported. Bioelectrical potentials are shown to become negative post surgery with the region near the fracture having the greatest negative changes. Bioelectric potentials recovery towards prefracture levels is slower when using pulsed electromagnetic field stimulation which may be an indicator of the increased cellular metabolic activity associated with acceleration of the healing process.World Automation Congress, 2002. Proceedings of the 5th Biannual; 02/2002
Conference Paper: A portable battery operated bone fracture evaluator[Show abstract] [Hide abstract]
ABSTRACT: A low cost, battery operated portable handy electronic instrument is developed to evaluate at quicker speed the bone conditions, at site, in a novel way, say in road accidents. The cost of the instrument is less than one per cent than that of a simple conventional X-ray machineEngineering in Medicine and Biology Society, 1997. Proceedings of the 19th Annual International Conference of the IEEE; 02/1997
Conference Paper: A piezoelectric bone hydrophone for medical ultrasound applications[Show abstract] [Hide abstract]
ABSTRACT: The piezoelectric property of bone has been utilized to develop a hydrophone. Small pieces of bone, in vitro, are cut and shaped to circular form with a pencil-type tip which is coated with a conductive silver point. This bone element is the sensing element of the hydrophone. Electrical leads are connected for excitation and the hydrophone is tested. The frequency response is obtained over a frequency range of 1-30 MHz. Two peaks of maximum output, at 5.4 MHz and 17.5 MHz, were found. These may be due to the fundamental frequency and its higher harmonics. Due to the wide frequency band, the hydrophone has potential use in studying high-frequency (10-MHz), nonlinear ultrasound propagation in different biological media.< >Engineering in Medicine and Biology Society, 1988. Proceedings of the Annual International Conference of the IEEE; 12/1988