Place Bone Routeway Of Anterior Column Of Acetabulum Anatomy Research With The Assistant Of Computer And Geometry

Objectives: Make use of a computer and the geometry principle to researchanatomy in the male anterior column of acetabulum.Look for a fit gateway in the bonerouteway for fixed bolt. Find a suitable way to place the bolt and ensure the fittestposition and angle, the length of bone inner way and the longest diameter of bone innerway.Methods: Collect the scanning of pelvis CT of20males who are normal. Carry on a3D reconstruction, monitor each plane of MPR array, and make beeline inside the bonerouteway of anterior column, then make it to be placed in an ideal location to make sureit is on the superior ramus of pubis into the nail import point and the acetabulumrearward the nail export point,then measure its length, and measure the perpendiculardistance of the nail import point to symphysial surface and upper edge of the superiorramus of pubis, parallel the beeline to make two rectilinear lines, make it just fit withbone routeway of anterior column of inside the outside side wall mutually slice, measurethickness of the inside and the outer；According to geometry principles,in the MPR array,horizontal plane follows coronal shaft revolve into and the thread’s same plane, measurerevolve angle, similarly, measure coronal plane follows coronal shaft and sagittal surfacefollows the perpendicular shaft revolve into and the thread’s same angle of plane,measure revolve angle, intersectional beeline which two planes get is the nail route. Theright and the left side all need to repeat the above-mentioned experiment, put the abovedata into the SPSS10.0software analytical combining with Mean士StandardDeviation (x±s) express, for data statistics analytical proceed together the right and the left sideform couples the sample t inspection.Results:.On the left：The perpendicular distance of the best nail point to upper edgeof the superior ramus of pubis and symphysial surface are20.885±1.0629mm and17.490±0.9363mm；Place the best direction of bolt and horizontal plane follows coronalshaft revolve61.980±2.9004°or coronal plane follows coronal shaft revolve28.020±2.9004°and sagittal surface follows the perpendicular shaft revolve65.180±2.2918°,intersectional beeline which two planes get is bolt route；The fit lengthof bolt is110.700±5.6314mm, the biggest diameter is7.9475±0.55882mm. Right：The perpendicular distance of the best nail point to upper edge of the superior ramus ofpubis and symphysial surface are20.980±1.0123mm and17.740±1.0091mm；Place thebest direction of bolt and horizontal plane follows coronal shaft revolve61.985±2.9375°or coronal plane follows coronal shaft revolve28.015±2.9375°andsagittal surface follows the perpendicular shaft revolve65.225±2.6465°,intersectionalbeeline which two planes get is bolt route； The fit length of bolt is110.915±5.9291mm,the biggest diameter is7.9390±0.56164mm.For data statistics of theright and the left side form the sample inspection and the result is all a P>0.05,discrepancy has no statistics meaning.Conclusions: It has bolt internal fixation anatomy foundation inside the centre inmales’ bone routeway of anterior column acetabulum anterior column acetabulum.