The present embodiments provide a prosthesis comprising first and second segments, and an axially extendable segment coupled to the first and second segments. A valve is coupled to at least one of the axially extendable segment or the second segment. The axially extendable segment comprises a first state in which the valve at least partially overlaps with the first segment, and the axially extendable segment comprises a second state in which the valve lacks an overlap with the first segment.