Operative surgery . d n Fig. 305. Duncans method of neuroplasty. Fig. 306. Repair of nervesby catgut. Fig. 307.—Grafting of adjacent nervesfor a nerve defect. C. Central or-gan. P. Peripheral. 276 OPERATIVE SURGERY. OPEEATIONS OJST SPECIAL NERVES. In the consideration of special nerves only such points as are distinctlyapplicable to each of them will be stated, as the general technique of opera-tions on nerves has been considered sufficiently already. FIRST DIVISIOlSr OP THE TRIFACIAL NERVE. The Supra-orhital Nerve.—The supra-orbital nerve can be divided, re-sected, and stretched at its exit f
Operative surgery . d n Fig. 305. Duncans method of neuroplasty. Fig. 306. Repair of nervesby catgut. Fig. 307.—Grafting of adjacent nervesfor a nerve defect. C. Central or-gan. P. Peripheral. 276 OPERATIVE SURGERY. OPEEATIONS OJST SPECIAL NERVES. In the consideration of special nerves only such points as are distinctlyapplicable to each of them will be stated, as the general technique of opera-tions on nerves has been considered sufficiently already. FIRST DIVISIOlSr OP THE TRIFACIAL NERVE. The Supra-orhital Nerve.—The supra-orbital nerve can be divided, re-sected, and stretched at its exit from the supra-orbital foramen or notchlocated at the junction of the inner and middle thirds of the supra-orbitalarch. If a notch be present, it can be readily felt with the finger. At this SUPRA-TROCHLEAR N j SUPRAORBITALA. AND N. f ORBICULARISPALP. M. I LABI ISUPERIOR! 5. niFRAORBITAL N:. Pig. 308.—Supra-orbital and infra-orbital nerves and frontal sinus. situation the nerve is covered by integument, fascia, and the combined fibersof the orbicularis palpebrarum, occipito-frontalis, and corrugator superciliimuscles. It is accompanied by vessels of the same name as itself. The OPERATIONS ON THE NERVOUS SYSTEM. 277 nerve often divides into two branches before reaching the seat of may be divided by the subcutaneous or by the opan method. If by theformer, steady the eyebrow and locate the notch with the left hand; then passthe point of a narrow bistoury beneath the integument from within outward,turn the edge, and cut strongly across the notch toward the upper firm compress should be applied to the wound at once to control thebleeding from the supra-orbital vessels. The nerve can be divided, resected,or stretched through either of the following cutaneous incisions: The First Operation.—Steady the eyebrow with the left hand; with theright draw the
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