Operative surgery . ncision. Theflap thus formed is three inches in both the vertical and transverse —^_ eters. Arrest the haemor- rhage; retract the bordersof the incision carefully;^ ^^ ^^ cut a groove in the line of periosteal division down toQ ~N^ j jf| the inner table in a beveled manner (Fig. 319) at allparts except at the upperborder, and here throughboth tables with the chiselsAi W/y ^af of Hartley or that of Pyle (Fig. 317, a, h, c). Theflap is now pried off by in-serting beneath the bone atthe completely divided bor-/ la der a bone elevator, which act causes fracture at theba
Operative surgery . ncision. Theflap thus formed is three inches in both the vertical and transverse —^_ eters. Arrest the haemor- rhage; retract the bordersof the incision carefully;^ ^^ ^^ cut a groove in the line of periosteal division down toQ ~N^ j jf| the inner table in a beveled manner (Fig. 319) at allparts except at the upperborder, and here throughboth tables with the chiselsAi W/y ^af of Hartley or that of Pyle (Fig. 317, a, h, c). Theflap is now pried off by in-serting beneath the bone atthe completely divided bor-/ la der a bone elevator, which act causes fracture at thebasal end of the undividedvitreous table. Expose thedura by turning down thePig. 318.—Lines of incision in intracranial f]^a,p (Fiff. 320) the bony neurectomy. ,. ^ p i • i ? ?, portion 01 which is securely held by a hinge composed of integument, muscle, and periosteum. The Second Stage (treatment of the middle meningeal artery).—Haem-orrhage from the middle meningeal and its branches often happens, and is.
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