Surgical treatment; a practical treatise on the therapy of surgical diseases for the use of practitioners and students of surgery . angular process is the external end. The retro-orbital tubercle isan apophysis on the posterior border of the upper part of the frontal process of the malarbone, lying just below the fronto-malar suture. Superior Rolandic Point.—A point 55 per cent, of distance from nasion to inion inmedian line. This is the upper end of the Rolandic fissure. Sylvian Point.—Point at which Sylvian fissure reaches the convexity of the to cm. (1^5 to 1% inches) dire
Surgical treatment; a practical treatise on the therapy of surgical diseases for the use of practitioners and students of surgery . angular process is the external end. The retro-orbital tubercle isan apophysis on the posterior border of the upper part of the frontal process of the malarbone, lying just below the fronto-malar suture. Superior Rolandic Point.—A point 55 per cent, of distance from nasion to inion inmedian line. This is the upper end of the Rolandic fissure. Sylvian Point.—Point at which Sylvian fissure reaches the convexity of the to cm. (1^5 to 1% inches) directly behind the external angular process (Fig. 731). On the naso-inial line, per cent, equals to 2 cm. (J^ to ^4 inch). The superiorRolandic point is 1 to 2 cm. posterior to the centre of the naso-inial line. It is 2 or 3 to the bregma. The presence of the parasinoidal sinuses renders this region verydifficult of access. In large heads it is about 18 cm. and in small heads about 17 to the nasion in the median line. MID-SAGITTAL PT. SUP. ROLANDIC PT GLABELLA ^*%a^L PNASION -J- tp|fe :ls^. Fig. 731.—Relations of Brain and cranial landmark points, brain fissures, and middle meningeal artery. The lower end of the fissure of Rolando is 9 5 cm (3^4 inches) below the upper end„on aline passing downward and forward at an angle of from 65 to 75 degrees, with the medianline. It is 7 cm. (2% inches) above the condyloid point on a line perpendicular to the upperborder of the zygoma, or cm. (2^ inches) above the zygoma. It lies generally about 1cm. above the Sylvian line. The fissure of Rolando may be located by connecting the two points above the line is continued downward it should cross the midzygomatic point. The fissure liesentirely under the parientalbone. The superior Rolandic point is 4 to 5 cm. (1^6 to 2inches) and the inferior Kolandic point about 3 cm. (1*^6 inches) posterior to the tem-poroparietal suture
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectsurgery, bookyear1920
