振動利用コヒーレンス関数解析による下顎骨骨折の　治癒判定に関して（第２報）　異常治癒経過例について

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  • Evaluation of bone healing in mandibular facture based on coherence function analysis utilyzing vibration test. Second report: An abnormal healing case.
  • Second report: An abnormal healing case
  • 異常治癒経過例について

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The intermaxillary fixation (IMF) has been frequently applied to maxillofacial fractures. The period of the fixation is however, determined empirically because we have no barometers to judge the bone unions. Thus, a method capable of determining an appropriate time of IMF removal in each case has been sought.<BR>The authors developed a new measurement apparatus for analyzing the transmission of vibration based on Coherence function, and bound that this apparatus could be a useful tool for the determination of the time of IMF removal. The apparatus is characterized by its abilities to judge the bone unions and to evaluate the healing process of mandibular fractures through a non-invasive and periodical measurement.<BR>In this paper, we report that our method was quite useful in evaluating the healing process, even in the mandibular fracture case of abnormal hone healing which was bruised and infected at the fracture site during IMF.

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