TWfST HOSPITALIZES ' MORTON DOWNEY, JR.HARTFORD, Feb. 23-(UPt) Morton Downey, Jr., 28. son of Ihe singer, was taken to St. Francis hospital last night after he strained his knee and shoulder while doing the twist.Downey, a disk jockey for radio 3tation WPDP, was dancing the twist for three hours at the opening of a twistland dance hall when he strained a knee and shoulder so severely that he required hospitalization.Officials at Si. Francis hospital said Downey was in good condition and probably would be released today.' *