Abstract
Pulsed-magnetic-field therapy for non-union of the tibia is becoming, in some centres, an established orthopaedic technique. The field is generated by passing pulses of current through coils positioned around the leg, but the mechanism of interaction is not understood. This paper gives a qualitative description of the fields produced and then develops a theoretical model to calculate the fields for simple geometries. Good agreement is found between calculation and measurement, validating the model and showing that the form of the fields produced in a limb can now be described.
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References
Barker, A. T. (1981) The design of a clinical electromagnetic bone stimulator.Clin. Phys. & Physiol. Measurement,2, 9–16.
Bassett, C. A., Pawluk, R. J. andPilla, A. A. (1974) Acceleration of fracture repair by electromagnetic fields: A surgically non-invasive method.Annals of the New York Academy of Sciences,238, 242–262.
Bassett, C. A., Pilla, A. A. andPawluk, R. J. (1977). A non-operative salvage of surgically resistant pseudarthroses and non-unions by pulsing electromagnetic fields: A preliminary report.Clinical Orthopaedics,124, 128–143.
Bassett, C. A., Mitchell, S. N. andGaston, S. R. (1981) Pulsing electromagnetic field (PEMF) treatment of ununited fractures and failed fusions. Presented at American Academy of Orthopaedic Surgeons 48th Annual Meeting, Las Vegas, March 1981.
Cater, B., Byrne, P. O. andMilne, D. D. (1980) Observations on the design and clinical use of magnetic fields for bone stimulation. Presented at ‘Some Applications of Electric and Magnetic Fields in Medicine’, Sheffield, England; October 1980.
Corfield, J. R. andJones, E. R. (1980) Pulsed magnetic field treatment of bone fractures. Presented at ‘Some Applications of Electric and Magnetic Fields in Medicine’, sheffield, England; October 1980.
Dierickx, M., Rybowski, L., Hinsenkamp, M. andBurny, F. (1978) Electromagnetic phenomena.Acta Orthopaedica Belgica,44, 615–633.
Dixey, R. andRein, G. (1982) H-Noradrenaline efflux potentiated in a clonal nerve cell line (PC12) by low intensity 500 Hz pulsed electromagnetic fields.Nature 296, 253–256.
Geddes, L. A. andBaker, L. E. (1967) The specific resistance of biological material—a compendium of data for the biomedical engineer and physiologist.Med. & Biol. Eng.,5, 271–293.
Kaye, G. W. andLaby, T. H. (1959)Tables of physical and chemical constants (12th Edition). Longmans, Green & Co., London, UK.
Lunt, M. J. andWatson, B. W. (1982) A system for investigating thein-vitro effects of low frequency pulsed magnetic fields.Clinical Physics and Physiological Measurement (in press).
Reinish, G. B. andNowick, A. S. (1976) Effect of moisture on the electrical properties of bone.J. Electrochem. Soc.,123, 1451–1455.
Watson, J. andDownes, E. M. (1979) Clinical aspects of the stimulation of bone healing using electrical phenomena.Med. & Biol. Eng. & Comput.,17, 161–169.
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Lunt, M.J. Magnetic and electric fields produced during pulsed-magnetic-field therapy for non-union of the tibia. Med. Biol. Eng. Comput. 20, 501–511 (1982). https://doi.org/10.1007/BF02442413
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DOI: https://doi.org/10.1007/BF02442413