. Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. Fig. loo.—Method of surrounding penis and scrotum with zone of anesthesia for opera-tions upon scrotum. (From Braun.). Fig. loi.—Method ul injccLin^ posterior surface ul ^ciolum. (From Braun.) GENITO-URINARY, ANORECTAL, AND GYNECOLOGIC OPERATIONS 39I growths or for elephantiasis, a zone of anesthesia should be createdaround the part to be excised. If it involv
. Local and regional anesthesia; with chapters on spinal, epidural, paravertebral, and parasacral analgesia, and other applications of local and regional anesthesia to the surgery of the eye, ear, nose and throat, and to dental practice. Fig. loo.—Method of surrounding penis and scrotum with zone of anesthesia for opera-tions upon scrotum. (From Braun.). Fig. loi.—Method ul injccLin^ posterior surface ul ^ciolum. (From Braun.) GENITO-URINARY, ANORECTAL, AND GYNECOLOGIC OPERATIONS 39I growths or for elephantiasis, a zone of anesthesia should be createdaround the part to be excised. If it involves the entire organ, infil-tration should be done around the base (Figs. loo and loi). If theoperation involves the contents of the scrotum, the cord should beexposed just below the spine of the pubis on one or both sides, as thecase may require, and blocked there. The genitocrural nerve lies atthe back of the cord, near the vas (Figs. 94 and 102). By infiltratingthe cord freely in this position the nerve is reached; it is not necessaryto directly expose it. In making an injection here care should betaken not to enter any of the large veins which may be found in thisregion. Make the injection only when advancing or withdrawingthe needle, not when the needle is stationary, unless the parts areplainly in view. The following case, operated on by P
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