STRENGTH PROPERTIES OF THE INGUINAL LIGAMENT AND APONEUROSIS OF THE EXTERNAL OBLIQUE ABDOMINAL MUSCLE IN MODELING OF THEIR DAMAGE

Abstract

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Aim. Is the study of the dynamics of physicomechanical properties of the inguinal ligament and aponeurosis of the external oblique abdominal muscle, depending on the nature of the lesion. Material and Methods. The study was carried out on the basis of the Bureau of Forensic Medical Examination, Kursk, on 100 corpses of men, the average age of which was 72.5±0.5 years, who died from diseases not associated with pathology of the abdominal organs. Six series of experiments were conducted. The body type was determined by the index according to Lavrova T. F., the parameters of the inguinal canal before and after injury of the inguinal ligament. The mechanical damage to the inguinal ligament and aponeurosis of the external oblique abdominal muscle was simulated the crossing by 50% and perforation with a surgical needle (developed by the device).The control group consisted of undamaged samples. The data obtained were processed statistically on a computer. Results and Discussion. It is established that the inguinal ligament damage in the transverse plane at 50% reduces the strength limit by 11.4%, the perforation of the inguinal ligament with needles reliably reduces its strength limit by 41.2% and increases its plastic deformation by 74.5%. The same dependence was observed in the study of the aponeurosis of the external oblique abdominal muscle. Conclusions. Perforation of the inguinal ligament with surgical needles significantly reduces its strength properties in 1.7 (p=0.05) times, whereas the crossing by 50% reduces them only in 1.1 (p=0.05) times, which can be explained by the difference in areadamage.