RESUMO
Method of computer modeling of behavior of cylindrical and lamellar bones under the hypervelocity impact is suggested. This method allows in the frame of mechanics of continuous medium to calculate the stress strain behavior and damage in bone tissues under the shock wave impact. The processes of shock correlation of steel fragments of different shape with diaphysis of cylindrical bones and flat bone of calvaria under the impact 500 m/s are studied. The given method can be used for the evaluation of damage area of bone tissue of shock wave osteoporosis under the gunshot wound.
Assuntos
Simulação por Computador , Fraturas Ósseas/patologia , Modelos Biológicos , Osteoporose/patologia , Ferimentos por Arma de Fogo/patologia , Animais , Fenômenos Biomecânicos , Osso e Ossos/ultraestrutura , Cães , Fraturas Ósseas/etiologia , Humanos , Microscopia Eletrônica de Varredura , Osteoporose/etiologia , Ferimentos por Arma de Fogo/etiologiaRESUMO
Studies with the use of atomic-force and scanning electron microscopy yielded new data that extend our knowledge of the complicated process underlying bone tissue degeneration as a result of its interaction with a high-speed injurious projectile. These data open up good prospects for the study of gunshot wounds and provide novel opportunities for forensic medical examination and diagnostics including confirmation of gunshot origin of the injury, elucidation of the properties (in the first place, energetic characteristics) of the injurious projectile, and determination of the wound size.
Assuntos
Osso e Ossos/lesões , Osso e Ossos/patologia , Patologia Legal/métodos , Ferimentos por Arma de Fogo/patologia , Osso e Ossos/diagnóstico por imagem , Balística Forense , Humanos , Masculino , Radiografia , Ferimentos por Arma de Fogo/diagnóstico por imagem , Adulto JovemRESUMO
Proctectomy with total mesorectumectomy, resection of the interior sphincter, deep parts of the external sphincter and bringing down were fulfilled according to an original authors' method in 7 patients aged from 38 to 78 years for cancer of the inferioampular part of the rectum with tumor located within the limits 8-35 mm from the anus (T3N1MO (n=1), T3NOM1 (n=1), T4N2M1 (n=1). Six months after operation conscious urge to defecation 1-2 times a day and containment of stools were noted and a year later it was possible to ignore urges during 15-30 min. In 5 patients T3NOM0--T3N1M0 relapse-free period for 3-5 years was noted.
Assuntos
Canal Anal/cirurgia , Colectomia/métodos , Procedimentos de Cirurgia Plástica/métodos , Neoplasias Retais/cirurgia , Reto/cirurgia , Adulto , Idoso , Canal Anal/fisiopatologia , Animais , Defecação , Modelos Animais de Doenças , Cães , Seguimentos , Humanos , Pessoa de Meia-Idade , Neoplasias Retais/fisiopatologia , Reto/fisiopatologia , Fatores de Tempo , Resultado do TratamentoRESUMO
Was proposed a method of determination of type of reaction of blood circulation on pre-hospital stage by patients with shock-producing trauma on the base of signs of saturation of hemoglobin by oxygen and on the base of endurance of period of isolation, without using difficult apparatuses and devices. It permits to individualize contra-shock therapy at early stages of traumatic disease on pre-hospital period.