Article III of the By-laws of the International Society of Bone Morphometry defines membership as follows:

All registrants at the International Bone Morphometry Congress in 1996 shall be Members of the Corporation until the next International Bone Morphometry Congress. Thereafter, the registrants at each International Bone Morphometry Congress shall be Members until the following Congress. The membership fee will be paid by virtue of paying the registration fee for an International Bone Morphometry Congress.