I had SpaceOAR implanted five months ago and it's still there. Whether it's still EFFECTIVE or not I can't say. As you pointed out, the SpaceOar web site states it's effective for three months but it also says it's absorbed after six months. Wish I could be more helpful but, for me anyway, it's still there after five months, I really feel it when riding my bike even with padded underwear and padded biking shorts.