Hip joint method

A method for treating hip joint osteoarthritis in a human patient by providing a medical device comprising at least one artificial hip joint surface, the hip joint comprising an acetabulum, being a part of a pelvic bone, and a caput femur being a part of a femoral bone, and having a partly spherical form having a largest diameter, wherein said medical device comprises:

• a prosthetic part adapted to function as an articulating surface comprising a center axis generally coinciding with the acetabulum and the caput femur center axis when implanted, wherein said prosthetic part comprises the artificial acetabulum surface,
• the method comprising the steps of:
• placing the prosthetic part in a through-going hole in the pelvic bone from an abdominal side opposite a concave portion of the acetabulum of the human patient,
• radially displacing a plurality of displaceable supporting members distributed circumferentially around the prosthetic part such that said plurality of supporting members are displaceably connected to the prosthetic part, and configured to transfer load from the prosthetic part, via the displaceable connection, to the pelvic bone, when implanted, and wherein
• said at least one artificial hip joint surface is configured to function as an articulating surface and said displaceable protruding supporting member is configured to transfer load acting in the direction of the acetabulum and caput femur center axis, when the displaceable protruding supporting member is displaced in a direction more perpendicular than parallel to the prosthetic part's axis and is implanted.

A method for treating hip joint osteoarthritis in a human patient by providing a medical device comprising at least one artificial hip joint surface, the hip joint comprising an acetabulum, being a part of a pelvic bone, and a caput femur being a part of a femoral bone, and having a partly spherical form having a largest diameter, wherein said medical device comprises:

• a prosthetic part adapted to function as an articulating surface comprising a center axis generally coinciding with the acetabulum and the caput femur center axis when implanted, wherein said prosthetic part comprises the artificial acetabulum surface,
• the method comprising the steps of:
• placing the prosthetic part in a through-going hole in the pelvic bone from an abdominal side opposite a concave portion of the acetabulum of the human patient,
• circumferentially displacing a plurality of displaceable supporting members distributed circumferentially around the prosthetic part such that said plurality of supporting members are rotated relative the pelvic bone, and configured to transfer load from the prosthetic part, via the displaceable connection, to the pelvic bone, when implanted, and wherein
• said at least one artificial hip joint surface is configured to function as an articulating surface and said displaceable protruding supporting member is configured to transfer load acting in the direction of the acetabulum and caput femur center axis, when the displaceable protruding supporting member is displaced.