. Plexus. FlG. 1. Showing- atrophy of the leg, complete loss of dorsarflexion and beginning talipes-equinus due to While he was unable to flex any of the other toes he can flex the big toe. Why is that? Because, you remember, the big toe is dorso flexed by the extensor proprius pollicis muscle, and it has escaped, while all the rest of the toes are the exten- Deformities of Infantile Paralysis. 99. Fig. 2. Showing atrophy of the leg, partial dorso-flexion and contraction possible in the extensor prop-rius pollicis muscle. 190 The Plexus. sor communis digitorum which
. Plexus. FlG. 1. Showing- atrophy of the leg, complete loss of dorsarflexion and beginning talipes-equinus due to While he was unable to flex any of the other toes he can flex the big toe. Why is that? Because, you remember, the big toe is dorso flexed by the extensor proprius pollicis muscle, and it has escaped, while all the rest of the toes are the exten- Deformities of Infantile Paralysis. 99. Fig. 2. Showing atrophy of the leg, partial dorso-flexion and contraction possible in the extensor prop-rius pollicis muscle. 190 The Plexus. sor communis digitorum which is paralyzed. To come back toour inability to flex the foot. The reason why the deformity isso hard to overcome is because the opposing muscles of the calfof the leg have undergone tonic contraction and shortening, hav-ing no opposition in the anterior muscles, and we have herewhat is known as contractures, which are always a strong factorin the causation of deformities following paralysis. Now whatshall we do in the way of treatment for these cases? Let me saythat sometimes a great deal can be done to improve the useful-ness of the affected limb and what we shall do depends upon thecondition of each individual case, and each case requires carefulstudy to determine just what muscles have been paralyzed andhow much power there is in those that have escaped. We findin the case of the boy here that he not only has the u
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