. Medical and surgical therapy. Fic. 20.—Parah/sis of (hemidian ntrvc. Ape-hand (dorsal asjiect). F\y,. 2].— I*aruli/si^ of Ikemedian ntrif. A|iehand .s<:;en frnin and deftHJtive. When tlie forearm is flexed, the patientsupplements this deftx^t by holding his elbow out ;when it is extended, he rotates the arm inward, withpassive pronation of the hand as a result. In the firstcase the deltoid assists in pronation, and in the secondcase the subscapularis comes into play. By attemptedextension of the hand and fingers, especially of theextensor carpi iilnaris, and perhaps also o

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. Medical and surgical therapy. Fic. 20.—Parah/sis of (hemidian ntrvc. Ape-hand (dorsal asjiect). F\y,. 2].— I*aruli/si^ of Ikemedian ntrif. A|iehand .s<:;en frnin and deftHJtive. When tlie forearm is flexed, the patientsupplements this deftx^t by holding his elbow out ;when it is extended, he rotates the arm inward, withpassive pronation of the hand as a result. In the firstcase the deltoid assists in pronation, and in the secondcase the subscapularis comes into play. By attemptedextension of the hand and fingers, especially of theextensor carpi iilnaris, and perhaps also of the extensorcommunis, and some apparent contraction of the long 58 CLINICAL FORMS OF NERVE LESIONS supinator, the patient at the same time succeeds inpronating his hand. Paralysis of the palmar muscles.—When the patientis told to flex his wrist, and when, by careful palpationof the tendons at the bend of the wrist, this flexion isopposed, it can be seen that the tendon of the flexorcarpi ulnaris only is much stretched;

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