. Abdominal hernia : its diagnosis and treatment. TRUSS-FITTIXG. 161 is somewhat stronger than needed. Its pressure can be reducedby taking it firmly in liand and stretching out (nos. 6 and 7,fig- 73) oi bending it over the arm of a chair. Caution isnecessary not to reduce its strengtli too much, as it is easier todecrease than increase it. Its pressure may be increased, how-ever, by adding to its curves, by short, firm bends between thehands, or curhng up the spring as shown in nos. 4 and 5, If increase of pressure obtained this way is considerable,it will be to quite an extent transi
. Abdominal hernia : its diagnosis and treatment. TRUSS-FITTIXG. 161 is somewhat stronger than needed. Its pressure can be reducedby taking it firmly in liand and stretching out (nos. 6 and 7,fig- 73) oi bending it over the arm of a chair. Caution isnecessary not to reduce its strengtli too much, as it is easier todecrease than increase it. Its pressure may be increased, how-ever, by adding to its curves, by short, firm bends between thehands, or curhng up the spring as shown in nos. 4 and 5, If increase of pressure obtained this way is considerable,it will be to quite an extent transient, and it is usually better toexchange for a stronger spring. It is to be remembered thatall hard-rubber covered springs must be warmed before bend-ing, but that this is not necessary in shaping celluloid or leathercovered springs. Fig. Hard-rubber cross-body truss applied to complete oblique hernia. In small hernia the pad may be higher. SELECTING TRUSS. Oblique Inguinal Hernia.—An incomplete or a small com-plete oblique inguinal hernia is usually retained by a verymoderate pressure and a small pad. which should be eitherdirectly over the internal ring or u])()n the canal immediatelybeneath that point. It is more difficult to select a truss exactlysuited to the treatment of a small hernia, from the stock of theaverage dealer, than it is for a large hernia. This is becausemany dealers will have nothing to do with a light truss spring,believing that its virtue is dependent upon its strength. Of the11 162 ABDOMINAL HERNL\. trusses carried in stock by the dealers, few will be found betterfor a small and recent hernia than a light spring cross-body,preferably with a hard-rubber or celluloid covering (nos. 2, 3,and 6, cross-body group). If the spring seems too strong,reduce its pressure in the manner already described,
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