A surgical or arthroscopic method for resurfacing at least one surface of a hip joint of a human patient using a medical device comprising a first sealing member. The hip joint has an acetabulum surface and a caput femur surface and the method comprises the steps of creating at least one hole passing into the hip joint, placing the first sealing member between the acetabulum surface and the caput femur surface, thereby creating a sealed hollow space between the acetabulum and the caput femur using the first sealing member, and injecting a material into the sealed hollow space, and thereby creating an artificial hip joint surface.
