Collarbone is notorious for going to non-union. If there is a black line through the middle of your "calcium deposit"(actually bone callus) you may be heading for hypertrophic non-union.

On the ankle, one of the biggest things will be ROM(Range of Motion), getting rid of the stiffness. Also of concern will be strength and proprioception, or the ability to know the position of the foot relative to the leg. Spelling out the alphabet with you big toe by moving your foot, circles with big toe in both directions, standing on one foot(have something to grab so you don't fall and bust your ass).

strength every other day, ROM and proprioception every day, go way light on weights to start, easy to hurt yourself and lose ground.