Hip joint instrument and method

A surgical instrument for operating hip joint osteoarthritis in a human patient, the hip joint comprising an acetabulum, the acetabulum being a part of the pelvic bone, and a caput femur, the caput femur being the proximal part of the femoral bone, wherein said surgical instrument is adapted to assist in the operating of the hip joint osteoarthritis from the abdominal side of the pelvic bone of said human patient, wherein said surgical instrument is further adapted to operate through a surgically created hole in the pelvic bone on the opposite side of acetabulum of said human patient.