Application of needle electromyography and nerve conduction study in forensic appraisal

Objective To explore the application value of needle electromyography(EMG) and nerve conduction study(NCS) in the forensic appraisal;to provide scientific basis for establishing normative and unified assessment methods of the peripheral nerve study in forensic medicine.Methods One hundred and sixty-four samples with injured peripheral nerve(injury group) and 138 samples with normal peripheral nerve(control group) were collected and tested with methods of EMG and NCS respectively.The relevance rate of two methods were compared and statistical analysis was performed.Results In the injury group,there was no statistical difference on the relevance rate between the application of EMG and that of NCS(P0.05).In the control group,there was no statistical difference on the negative rate between the two methods(P0.05).The false negative rate of the injury group and the false positive rate of the control group were both 0% when using the two methods together.Conclusion When the injured peripheral nerve in forensic appraisal is in doubt,application of both EMG and NCS could disclose truth from falsehood.The accuracy and credibility of identification results could be enhanced.