. Medical and surgical therapy. Palm of the 23. Back of the 24. Distribution of sensory changes in .severe lesions of the median complete autesthesia to all modes of sensation. Gret/:liypiBsthesia to prirkin;., anaesthesia to heat and cold. DoUedportion : loss marked hypa?sthesia. the thumb are not completely insensitive to stimula-tion by heat or pain (figs. 23 and 24). There is, however, nearly always complete an-aesthesia in the index finger on both aspects, princi-pally in the last two phalanges, and this also appliesto the same phalanges of the middle fing

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. Medical and surgical therapy. Palm of the 23. Back of the 24. Distribution of sensory changes in .severe lesions of the median complete autesthesia to all modes of sensation. Gret/:liypiBsthesia to prirkin;., anaesthesia to heat and cold. DoUedportion : loss marked hypa?sthesia. the thumb are not completely insensitive to stimula-tion by heat or pain (figs. 23 and 24). There is, however, nearly always complete an-aesthesia in the index finger on both aspects, princi-pally in the last two phalanges, and this also appliesto the same phalanges of the middle finger. Slight touch, pressure, pricking, heat and cold,are not-felt. Tn the index finger the sense of ])ositionis usually abolished. There is complete ana?sthesia 62 CLINICAL FORMS OF NERVE LESIONS to vibrations of the tuning-fork in the last twophalanges of the index and even the middle is frequently lessened sensation in the bone ofthe terminal phalanx of the thumb, and sometimes,too, of the first three metacarpals

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