• Poliomyelitis does not actually have a chronic phase, when considered in terms of static functional capacity and reaction to stress. The end-results of this disease can be evaluated any time after the period of rapid recovery has taken place and the patient is old enough chronologically, and in duration of illness, to have had all the necessary treatment. This evaluation, which must be on an individual basis, must include not only the degree of physical independence but also the patient's mental adjustment to his residual physical handicap. Evaluation can only be carried out by the physician who, considering all the many factors determining recovery, judges without bias.
Bennett RL. EVALUATION OF END-RESULTS OF ACUTE ANTERIOR POLIOMYELITIS. JAMA. 1956;162(9):851-854. doi:10.1001/jama.1956.02970260001001