The study of applied anatomy of the groove of sigmoid sinus

doi:10.3969/j.issn.1001-9448.2001.02.009

Abstract：Objective　To study morphologic feature and relationship with adjacent structure of the groove of sigmoid sinus (GSS) in order to provide an anatomic basis for neurosurgery and otolosurgery. Methods To observe morphology and location of GSS and find extracranial mark spot of upper curvature of GSS, and to measure and statistic depth and length of GSS, the distances from the frontal edge of GSS to Henle's spine, the external aperture of the vesibulasr aqueduct, interolaterial lip of interior auditory meatus, and posterior semicircular canal, and contrast the difference of left and right side. Results The configuration of GSS was “乙”-shape; the extracranial mark spot of upper curvature of GSS was anterior angulus mastoideus ossis parietalis in 74.5% of all; the results of measurement were 9.75,5.55,9.57,22.07,12.42, 8.67 mm in turns, which were significant difference between left and right side of the depth and length of GSS, and the distances from GSS to the external aperture of the vesibulasr aqueduct. Conclusion GSS was significant anatomy mark on the inner surface of petrous bone; there were some relationship between GSS and adjacent structure; preceding sigmoid sinus often appear at right.