Applying direct pressure on the hips can compromise the healing process and impede the formation of new blood vessels in the transplanted fat. It is highly likely that you will be instructed not to sleep on your back for several weeks following the surgery, which means you will likely need to sleep on your stomach.
While it may be possible to sleep on your side, it is important to change positions regularly as you may inadvertently exert pressure on your hips while lying down.
The same principle applies to sitting. Understandably, sitting can be challenging. If sitting cannot be avoided, placing one or two pillows under your thigh can help reduce pressure on your hips. Additionally, it is recommended to change your posture every 5 minutes to alleviate any prolonged pressure.