Maxillofacial region wounds of dogs were inflicted by spherical steel bullets,0.7 g weight,with the muzzle velocity of 1.3 km/s.The photographs of the temporarycavity were taken with a high speed x-ray cine-camera,and...Maxillofacial region wounds of dogs were inflicted by spherical steel bullets,0.7 g weight,with the muzzle velocity of 1.3 km/s.The photographs of the temporarycavity were taken with a high speed x-ray cine-camera,and local wounding conditionswere observed with the naked eye.The experimental results proved that a temporary ca-vity was formed in the maxillofacial region wound.The contusion zone of the maxillofa-cial soft tissue was smaller than that of the extremities.The contusion zone of the skinand oral mucous membrane was 1-2 mm,and that of muscle was 5-8 mm in thickness.In clinical situation,the tissues of the contusion zones should always be excised since itconsists of devitalized tissue.The temporary cavitation is an important factor in causingstructural injuries of tissues around the local wound track.展开更多
文摘Maxillofacial region wounds of dogs were inflicted by spherical steel bullets,0.7 g weight,with the muzzle velocity of 1.3 km/s.The photographs of the temporarycavity were taken with a high speed x-ray cine-camera,and local wounding conditionswere observed with the naked eye.The experimental results proved that a temporary ca-vity was formed in the maxillofacial region wound.The contusion zone of the maxillofa-cial soft tissue was smaller than that of the extremities.The contusion zone of the skinand oral mucous membrane was 1-2 mm,and that of muscle was 5-8 mm in thickness.In clinical situation,the tissues of the contusion zones should always be excised since itconsists of devitalized tissue.The temporary cavitation is an important factor in causingstructural injuries of tissues around the local wound track.
