An orthopedic prosthesis includes a proximal member (11) which internally accommodates the major motion of a patient, e.g., during walking, thereby reducing wear against a cup or liner (4000). A distal member (12) may be utilized which rotates within the distal member about an axis aligned with the major motion of the patient. The orthopedic prosthesis may also include a head (100) and neck (200), the neck being rotatably mounted within the head, the head being rotatably mounted within the acetabulum region of a patient.
