How to sleep after hip replacement surgery: A hip surgeon’s advice 

Recovering from hip replacement surgery can be challenging, and one of the biggest worries patients have is how to sleep safely. Pain, stiffness, and concerns about dislocating the new hip can make nights stressful — but understanding how to position your hip gives you confidence and peace of mind.

This guide will help you with realistic, practical advice on sleeping after hip replacement, including safe positions, what to avoid, and how to protect your hip while you rest.

Why sleeping after hip replacement can feel risky

Some hip dislocations can happen in bed, depending on your surgical approach and how the leg moves when you’re lying down or turning.

• Posterior approach: The risk is when sleeping on your side with the operated side up — the operated leg can fall forward across your body, bringing the knee toward the bed. This puts the hip in flexion and internal rotation, which can stress the new joint.
• Anterior approach: There’s more risk if the hip goes into too much extension and external rotation, which can happen when lying on your stomach.
• Lateral approach: There’s a risk if the operated leg crosses the midline while flexed.

Knowing these details helps you avoid movements that put extra stress on the hip joint as you sleep.

Best sleeping positions after hip replacement

✓ On your back: This is generally the safest option for all approaches. Use a pillow between your legs to stop the legs crossing and to keep the hip aligned.

Unless advised by your surgeon, you do not have to sleep on your back for six weeks after surgery. This is a historical precaution that does not protect the hip any more than adopting safe habits and adapting a comfortable position safely.

✓ On your non-operated side: Lie on the non-operated side with a pillow between your knees and ankles. This prevents the operated leg from crossing over.

✓ On your operated side: Many people think this will damage the hip — but once the wound has healed (usually about two weeks), it’s safe to gently lie on your operated side. It may feel sensitive at first. Ease into it slowly and use a pillow for extra comfort and support. This usually takes longer to feel comfortable (around 6 weeks sometimes more).

✓ Extra tip for posterior approach: If sleeping on your side with the operated side up, always place a pillow between your knees. This stops the operated leg from falling forward across your body and protects against unsafe twisting.

What to avoid when sleeping after hip replacement

⚠ Sleeping on your stomach: This position can put your hip in excessive extension and external rotation, and getting in and out of this position can cause unwanted twisting. It’s best avoided if possible. If you must lie on your stomach, a pillow under the operated side at knee level can help — but side or back sleeping is safer long term.

⚠ Crossing your legs: Avoid crossing your legs when lying down or turning in bed, especially when the hip is flexed. This can increase dislocation risk, especially with lateral and posterior approaches.

Reassurance for your recovery

It’s normal to feel nervous about sleeping after hip replacement, but careful positioning makes a big difference in keeping your new hip safe. Use pillows to support your legs, turn slowly, and avoid positions that stress the joint. Learn more about precautions following hip replacement surgery.

Written by Mr Khaldoun Bitar, hip surgeon, UK

Disclaimer:This information is for general guidance only. Every patient and every hip replacement is different. Always follow the specific instructions given by your surgeon. If you have any doubts about your sleeping position or movements in bed, speak directly with your surgical team.