Expandable implant for partial disc replacement and reinforcement of a disc partially removed in a discectomy and for reduction and maintenance of alignment of cancellous bone fractures and methods and apparatuses for same

A method of repairing a defect in an intervertebral disc or in a cancellous bone fracture comprising:

• loading a plurality of implant devices into a delivery device adapted for insertion into the defect, wherein the implant devices are in a compressed form;
• inserting the delivery device into the defect;
• and
• releasing the implant devices from the delivery device, wherein the implant devices transform from the compressed form to an expanded form.

An implant for repair of a defect in an intervertebral disc or in a bone fracture or in a cartilaginous joint, wherein a plurality of the implant are used to repair the defect, and each implant comprises:

• a pre-insertion shape adapted for insertion into the defect;
• a composition that allows the pre-insertion shape to be transformed to a post-insertion shape after the implant is inserted into the defect;
• and
• the post-insertion shape defines a larger volume than the pre-insertion shape.