I also think that using treadmill in gait training of patients with THR is a barbaric approach regarding the patient safety point of view. Infact, a lot of precautions have to be followed in gait training of patients with THR as in the Maximum protection phase (0-6 weeeks post operatively) and moderate & minimum protection phase (6-12 weeks post operatively). Soft tissue healing takes time and pain also resolves. Moreover, new bone takes times to form around the implant and joint position sense also develops with the passage of time. So be careful and follow the joint safety instructions to protect and use the new joint.