Abstract: An osseointegration system for a long bone comprises a sleeve system comprising at least two osseointegrated sleeves being mutually uncoupled in the sense that respective ones of the sleeves do not prevent one another to perform transverse displacements relative to one another; a stem arranged for being, in said operation condition, received within the at least two osseointegrated sleeves in such manner that at least low amplitude to-and-fro axial sliding displacements of the stem relative to said sleeves are allowed; at least one fitting collar; and retaining means arranged for realizing that in said operation condition the stem is retained by the long bone.

Abstract: This invention relates to a process for producing polyester biopolymers by culturing Pseudomonas oleovorans bacteria on substrates comprising certain nutrients. The nature of the polyesters can be varied by varying the nature of the carbon source used. In this way polyesters with unsaturated double bonds can be produced, too. From the polyesters, optically active carboxylic acids or esters are produced. The polymers can be used for making articles of manufacture, such as sutures, films, skin and bone grafts.