only treatment of spinal bodies femoral heads and tibial plateaus the bag 22 and the methods of treatment described herein may be utilized throughout a mammalian body to treat many types of bone and tissue abnormalities including those described herein as well as others in addition to being directed to the specific combinations of features claimed below the invention is also directed to embodiments having other combinations of the dependent features claimed below and other combinations of the features described above the above disclosure is intended to be illustrative and not exhaustive this description will suggest many variations and alternatives to one of ordinary skill in this art all these alternatives and variations are intended to be included within the scope of the claims where the term u201c comprising u201d means u201c including but not limited to u201d those familiar with the art may recognize other equivalents to the specific embodiments described herein which equivalents are also intended to be encompassed by the claims further the particular features presented in the dependent claims can be combined with each other in other manners within the scope of the invention such that the invention should be recognized as also specifically directed to other embodiments having any other possible combination of the features of the dependent claims for instance for purposes of claim publication any dependent claim which follows should be taken as alternatively written in a multiple dependent form from all prior claims which possess all antecedents referenced in such dependent.