To determine the intrinsic lenghtening ability of the tracheocarinal complex and the implications for surgery and blunt trauma.x.
Postmortem gross study of unitary specimens of lower tracheocarinal and proximal main bronchi.Documentation of cartilaginous structure and ability to lengthen in response to measured differential elongation by standerdised weight induced stretching.x.
The elasticity of the tracheocarinal complex rapidly decreases in the force stretch weight range from 5 newtons(500kg) to 10 newtons (1kg). 11 carinae were studied and measurements tabled and graphed. The tracheocarinal complex is largely cartilage (95%) in structure with bars on average 5mm in width and intercartilaginous spaces 1mm.It is tough and rigid and minimally responsive to longitudinal stretch.Only 5mm of increased length are available.x.
Minimal longitudinal lenghtening potential is available during resection or reconstruction of tracheocarinal area.it is a tough cartilaginous and interwoven complex.x.
Tracheal length contribution is strictly curtailed by structural factors during tracheocarinal resection and reconstructions.The pattern of bronchial tearing seen post severe thorax trauma is predicated by the tough shell of cartilage that protects the tracheocarinal complex but not the proximal 2 cms of main bronchix.
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