Nervous and mental diseases . r. Fig. 185,—Gait in tabes. Observe over-extension of supporting knee, rigidity of ad-vancing leg, elevated toe, heavily descendingheel, watchfulness of steps, and assistance by-cane. Fig. 186.—Showing the tendency to over-extension of the knee-joints in tabes, to securefirmness in standing. The foot is usually raised too high at the end of the step, but is alsoprone to catch upon any trifling obstacle as it swings forward. Theopposite foot is then advanced in a similar irregular way, and the patientalmost invariably aids himself by carefully watching his feet and
Nervous and mental diseases . r. Fig. 185,—Gait in tabes. Observe over-extension of supporting knee, rigidity of ad-vancing leg, elevated toe, heavily descendingheel, watchfulness of steps, and assistance by-cane. Fig. 186.—Showing the tendency to over-extension of the knee-joints in tabes, to securefirmness in standing. The foot is usually raised too high at the end of the step, but is alsoprone to catch upon any trifling obstacle as it swings forward. Theopposite foot is then advanced in a similar irregular way, and the patientalmost invariably aids himself by carefully watching his feet and by theadditional assistance of one or two canes (Fig. 185). In some casesthere is considerable uniformity in the manner of taking each step, butas often no two paces are exactly alike, and the patient, instead ofadvancing in a straight line, swerves more or less to one and the otherside, often bumping into neighboring objects. When he sits down he does so with suddenness, as if both kneesgave way too soon, as they often do.
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