. Medical and surgical therapy. - L ?tl \, - ••?::;:::;::::r;:::;.\:^: FiQ. 45.—The same appliance fitted on. external border of the boot by means of a layer ofleather about 1 centimetre thick. This raising of the sole is sometimes enough to 342 TREATMENT AND REPAIR OF NERVE LESIONS correct the defect in gait when the foot-drop is nottoo marked. Its use is still required for some timeeven after discarding the other corrective of Souques, M6gevand, and Donnet.^—Thetwo lateral springs which constitute the essential partof the apparatus communicate to the foot a move-ment of


. Medical and surgical therapy. - L ?tl \, - ••?::;:::;::::r;:::;.\:^: FiQ. 45.—The same appliance fitted on. external border of the boot by means of a layer ofleather about 1 centimetre thick. This raising of the sole is sometimes enough to 342 TREATMENT AND REPAIR OF NERVE LESIONS correct the defect in gait when the foot-drop is nottoo marked. Its use is still required for some timeeven after discarding the other corrective of Souques, M6gevand, and Donnet.^—Thetwo lateral springs which constitute the essential partof the apparatus communicate to the foot a move-ment of flexion when it leaves the ground. By flex-ing the foot on the leg, this appliance maintains it in. Fig. 46.—Appliance of Privat and Belot for paralysis of theexternal popliteal. a good position without causing any false movementsof rotation or distortion. The half ring of the upper portion is simply appliedto the calf and only exerts slight pressure (figs. 44and 45). Appliance of J. Privat and J. Belot.^—The apparatusis of simple construction, and consists of a steel springfixed underneath the sole, and of a leather strap whichis tightened behind the calf in order to produce tensionoi the spring (figs. 46 and 47). ^ Revue Neurologique, November-December 1915, p. 1253.* Ibid., July 1916, p. 120. ORTHOPEDIC APPLIANCES 343 Similar useful appliances have been thought outand made by A. Leri, Sollier, etc. Of all these appliances preference must be given tothat of Souques, Megevand, and Donnet, which correctsfoot-drop remarkably well, and which is in additionstrong, cheap, and inconspicuous ; all our patientsfitted with it have been well satisfied. The shoulder-belt appliance of Henr


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