Abstract: The invention generally relates to cells and compositions comprising same for use in cell therapy, to methods of obtaining same, and to use of same in cell therapy. In one aspect, the invention provides a method for forming a cell composition from a tissue sample, the method comprising: providing a tissue sample comprising cells; contacting the sample with a polymer in binding conditions, said binding conditions being conditions that enable binding of cells in the sample to the polymer, so that said cells are bound to the polymer; culturing the cells bound to the polymer under conditions and for a time that allows the cell number to increase; providing conditions to induce a phase change of the polymer; thereby forming a cell composition from a tissue sample.

Abstract: A patella resection assembly comprises a handle, slide member and two claw members. The slide member is movably mounted on the handle and includes two diverging arms. Inner edges of the diverging arms contact outer edges of the claw members so that distal movement of the slide member causes the claw members to move toward each other and close around a patella. The claw members and slide member have teeth for grasping the patella as the claw members move together. The claw members also have flat co-planar surfaces for guiding the path of a saw blade during resection of the patella.

Abstract: A method of surgically preparing a patella for implantation of a patella prosthetic component is disclosed.

Abstract: An orthopaedic surgical instrument that includes a patella resection guide is disclosed. The patella resection guide includes a body having a substantially planar upper surface that defines a patella cutting guide surface and a first jaw having a first tooth, and a second jaw positioned opposite the first jaw. The second jaw is movable relative to the first jaw and includes a second tooth extending toward the first tooth that defines an axis along which the second jaw is moveable relative to the first jaw. The patella cutting guide surface defines a resection plane that extends through a patient's patella when the patella is positioned between the first jaw and the second jaw.

Abstract: A patella resection assembly comprises a handle, slide member and two claw members. The slide member is movably mounted on the handle and includes two diverging arms. Inner edges of the diverging arms contact outer edges of the claw members so that distal movement of the slide member causes the claw members to move toward each other and close around a patella. The claw members and slide member have teeth for grasping the patella as the claw members move together. The claw members also have flat co-planar surfaces for guiding the path of a saw blade during resection of the patella.

Abstract: An orthopaedic surgical instrument that includes a patella resection guide is disclosed. The patella resection guide includes a body having a substantially planar upper surface that defines a patella cutting guide surface and a first jaw having a first tooth, and a second jaw positioned opposite the first jaw. The second jaw is movable relative to the first jaw and includes a second tooth extending toward the first tooth that defines an axis along which the second jaw is moveable relative to the first jaw. The patella cutting guide surface defines a resection plane that extends through a patient's patella when the patella is positioned between the first jaw and the second jaw.

Abstract: A method of surgically preparing a patella for implantation of a patella prosthetic component is disclosed.