Medical device

A method of producing a medical device comprising a porous structure, the method comprising:

• determining a load range to which the porous structure may be subjected in use;
• and
• manufacturing the medical device comprising the porous structure such that the porous structure has a configuration that varies in dependence on a load applied to the porous structure, such that the porous structure has a first configuration when the load is of a first magnitude, and has a second configuration when the load is of a second magnitude that is greater than the first magnitude and within the load range,
• wherein the porous structure comprises a first surface portion and a second surface portion, a first unit and a second unit, and at least one of:
• one or more connection members connecting the first unit to the second unit;
• or
• a first arm as part of the first unit and a second arm as part of the second unit;
• wherein the first surface portion is disengaged from the second surface portion when the porous structure has the first configuration, and wherein the first surface portion is engaged with the second surface portion when the porous structure has the second configuration.