New elements of operative surgery . xternal surface, with the zygo-maticus major and risorius Santorini muscle, the parotid gland andStenons duct, the transverse facial artery, the pes anserinus, and the 66 522 NEW ELEMENTS OF OPERATIVE SURGERY. integument. By its internal surface, with the buccinator, fromwhich it is separated by a large mass of fat, and with the ra-mus of the lower jaw. By its posterior border, with the parotidgland ; and by the anterior border, with the facial artery andvein. The points to be carefully attended to in the operation, says , are the danger of woundin
New elements of operative surgery . xternal surface, with the zygo-maticus major and risorius Santorini muscle, the parotid gland andStenons duct, the transverse facial artery, the pes anserinus, and the 66 522 NEW ELEMENTS OF OPERATIVE SURGERY. integument. By its internal surface, with the buccinator, fromwhich it is separated by a large mass of fat, and with the ra-mus of the lower jaw. By its posterior border, with the parotidgland ; and by the anterior border, with the facial artery andvein. The points to be carefully attended to in the operation, says , are the danger of wounding the facial artery and vein,and the parotid duct and gland. The best method of avoiding theparotid gland is to direct an assistant to embrace it with his fin-gers, and to press it directly backwards, the assistant placing him-self behind the patient. It must be obvious to any person acquainted with the anatomyof the parts, that a slight deviation of the knife from the proper di-rection, might be attended with serious • It is worthy of remark, says Dr. Schmidt, that in the case oper-ated upon by him, the rigidity and contraction were confined onlyto the masseter muscle of one side, viz., the one divided; and thatthe jaws, at times, were so firmly closed together that it was im-possible to introduce between the teeth a body of greater thicknessthan a dollar. The immobility had existed about sixteen years.—(See accompanying plate, illustrating these parts.) Division of the Muscles of the Face for Chronic Spasms. Dieffenbaeh has performed this operation in four cases, wherethe disease had existed some time. The orbicularis palpebrarum STRABISMUS. 523 was divided, also the muscles of the cheek, from the ala of the noseto ths anterior border of the 7}iasseter,-and lastly, the muscles at theangle of the mouth. A perfect cure ensued, {British and ForeignMed. Rev., Jan., 1842.) It will be noticed that the masseter itselfwas not divided, the claim of priority for the
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