Case 387. (Roussy, February, 1915.)

A Zouave was taken out from under a trench shelter beam, the night of December 21, 1914, at Tracy-le-Mont. The beam had fallen upon eight men, killing one, and striking the Zouave in the hypogastrium. He was pulled out two hours later, unable to take a step. He was evacuated on his back, to Paris; stayed a month in the hospital at Croix-Rouge, bedfast. According to the patient, he was entirely anesthetic in the legs. He went to Villejuif, January 22, with the diagnosis of spinal contusion and hemiplegia. He could then walk on crutches, leaning on the left leg. He felt a sharp pain at the level of the spinous process of the first lumbar vertebra and all along the sacrum. Spontaneous movements of the left leg were possible, but they were slow and weak. The hypesthesia rose to the navel. There was a suggestion of a cauda syndrome. The knee-jerks were normal, but on the left side the Achilles jerk was absent. There was a partial R. D. in the posterior muscles of the left leg.

The diagnosis was functional paraplegia plus left internal popliteal neuritis. The crutches were removed, he was isolated, and given motor reëducation. In a week he was able to walk alone with ease.

Re popliteal nerve lesions, Athanassio-Benisty remarks that the external popliteal nerve of the leg resembles pathologically the musculospiral nerve of the arm, whereas the internal popliteal behaves like the median. The musculospiral nerve of the arm shows very variable and usually slight sensory changes. The median nerve more than any other nerve in the arm yields painful sensations during its recovery from section.

Re differentiation of peripheral neuritis and hysterical paralysis, Babinski gives as signs peculiar to neuritis, and never found in hysterical paralysis, the following: (a) diminution or loss of bone and tendon reflexes; (b) muscular atrophy (except for slight amyotrophy exceptionally found in hysteria); (c) the reaction of degeneration (only of value after eight or ten days); (d) hypotonus; (e) distribution characteristic of peripheral motor sensory and trophic disorder.

Re diagnosis of organic paraplegia as against hysterical paraplegia, the latter is to be recognized chiefly by the absence of the organic signs, as (a) alteration of tendon reflexes, (b) the Babinski sign (toe phenomenon), (c) exaggeration of defense reflexes (dorsal flexion of foot on sharp pinching of dorsum of foot or leg), (d) muscular atrophy with R. D., (e) sphincter disorder, (f) skin changes, such as decubitus.