After rehabilitation of a hip replacement, what should a normal range of motion be?

It depends: The range of motion following hip replacement depends on the patient (host factors) and the surgeon (technique). Patients with good preoperative range of motion usually have better postoperative range of motion. However, component position, and offset, and residual soft tissue tension can also affect postoperative postion.

Functional: You should be able to bend the hip to about 100 degrees, extend the hip to about 10 degrees, bring the leg out about 40 degrees, and turn the foot out about 45 degrees. I don't recommend bringing your leg past midline or turning your foot inward.

Variable: The potential range of motion of each implant design is based on the diameter of the head ball, the length of the head ball, the shape and thickness of the neck section, the design of the acetabular socket and bearing. The position the surgeon places the components makes a difference. Patient factors reducing range are fat thighs and stiff and tight muscles and lack of preop range of motion.