During the exhibition of the rest and protection treatment of infantile paralysis at the last session of the American Medical Association, many physicians requested that we report in detail the method of making molded plaster shells and covering them with a water-proof material which increases the life of a cast threefold.
The principle employed by us in the treatment of anterior poliomyelitis is chiefly that of constantly maintaining the physiologic rest position for paralyzed muscles by means of protective supports. As muscle power returns, the weaker of two opposing groups is favored by the protection position; that is, the origin and insertion of the weaker muscles are brought as close as possible without injuring the opposing muscles or producing a permanent deformity by permitting bony or ligamentous changes. At the same time it is desirable that the protected parts may be bathed and given heat and light massage twice or three
Bennett GE, Cobey MC, Kendall HO. MOLDED PLASTER SHELLS FOR THE REST AND PROTECTION TREATMENT OF INFANTILE PARALYSIS. JAMA. 1937;109(14):1120-1121. doi:10.1001/jama.1937.92780400002009a