My husband has had three hip replacement ops, the only thing he needed help with was putting his socks and shoes on. He was able to move around the house including up and down the stairs with the aid of his crutches straight away. What might be useful is a trolley with a tray on top, occupational health can usually provide these, they are useful for transporting a plate of food from one room to another. We do have a shower cubicle in our en suite which he used to shower and he fixed handles in that before his op to help with stability when showering, he couldn’t have climbed into the bath. If you are in reasonably good health you should be fine.