Reflexes under chloroform.
Case 425. (Babinski and Froment, October, 1915.)
A soldier sustained a bullet wound, September 22, 1914, in the right calf. There was no fracture, as X-ray showed. Cicatrization was slow and took at least three months. He was examined October 2, 1915, at the Pitié,—not complaining of pains, but lame. There were no pains, limitation of movement, or joint sounds in the hip joint, and X-ray was negative. There was a slight atrophy of the limb, 1.5 c.m. less in circumference on the right. There was a sharply defined local hypothermia of the right leg up to the knee. The right knee-jerk was a little stronger and brisker than the left, yet it was difficult to be sure of this, and there was a still more doubtful difference between the Achilles reflexes.
The man was anesthetized with chloroform, October 10. As he was going to sleep, before the phase of excitement and agitation had ceased, the two knee-jerks had disappeared. At the same time, the left Achilles jerk vanished, followed by the plantar cutaneous reflexes. Anesthesia was then stopped. The right Achilles jerk, which had not disappeared at any time, remained distinct. It was stronger than in the waking state, and polykinetic. During the waking phase, this reflex remained strong and polykinetic, but there was no epileptoid trepidation of the foot. Accordingly, under chloroform, the difference of the two Achilles reflexes had become very sharp. The right knee-jerk reappeared before the left and became stronger, though without patella clonus. This difference was much more striking than in the waking state. This asymmetry of the patella and Achilles reflexes lasted about 10 minutes after anesthesia was stopped, and lasted a little longer for the patella reflexes than for the Achilles reflexes.