How long will it take for the condition to be corrected, and will there be any residual weakness or decreased function of the arm of baby?

If recovery is to occur on its own, it most commonly begins in the first six to eight weeks of life. If little or no active motion of the affected arm begins before three months of age, surgical procedures are commonly necessary to maintain motion of the shoulder, elbow, and wrist. Even after surgery, some residual decrease in function is very likely.