Activities and movements you must avoid after hip replacement

After hip replacement surgery, your surgeon will give you a list of movements and activities that put stress on your new joint and can cause it to dislocate or fail. The most important rule is to avoid bending your hip past 90 degrees — that means no bending forward at the waist to pick things up, no crossing your legs, and no sitting in low chairs. You also cannot rotate your hip inward or outward sharply, and you must avoid high-impact activities like running, jumping, or playing contact sports, usually for life.

These restrictions exist because your hip replacement has a limited range of motion compared to your natural hip. The ball-and-socket joint is smaller and shallower than the original, so extreme angles can cause the ball to slip out of the socket. This is called dislocation, and it is painful, requires when ready medical attention, and may need another surgery to fix.

The length of time you must follow strict precautions depends on how well your tissues heal around the implant. Most surgeons ask you to follow hip precautions for 6 to 12 weeks after surgery, though some recommend them for 3 months or longer. Your surgeon will tell you when it is safe to relax some restrictions, but certain movements — like extreme bending or twisting — remain off-limits permanently.

Key Takeaways

  • Never bend your hip past 90 degrees, cross your legs, or sit in low chairs for at least 6 to 12 weeks after surgery, and often longer.
  • Avoid high-impact activities like running, jumping, and contact sports permanently, as they can damage the implant or cause dislocation.
  • Do not rotate your hip inward or outward sharply, and avoid twisting your torso while your leg is planted.
  • Your surgeon will provide a written list of precautions specific to your implant type and surgical approach, and you should follow it exactly during recovery.
  • Dislocation is the most common complication after hip replacement and requires emergency care, so understanding your movement limits is critical to protecting your new joint.

Bending and positioning restrictions in the first weeks

The 90-degree rule is the single most important restriction in the first weeks after surgery. This means your hip cannot bend more than a right angle. In practical terms: do not lean forward to tie your shoes, do not pick items up off the floor, do not bend to get into a car, and do not sit in a regular toilet seat without a raised seat.

Your surgical team will send you home with tools to help you follow this rule. A reacher (a long-handled grabbing tool) lets you pick up items without bending. A sock aid helps you dress your lower body. A raised toilet seat, shower chair, and bed wedge keep your hip in a safe position. Use these tools consistently — skipping them to "just quickly" bend down is how dislocations happen.

Crossing your legs is forbidden because it rotates your hip inward, which is one of the most dangerous movements for a new implant. This includes crossing your legs while sitting, lying down, or standing. It also means you cannot sleep on your side without a pillow between your knees to keep your legs apart. Your surgeon or physical therapist will show you the correct sleeping position for your specific implant.

High-impact and repetitive activities you must avoid

Running, jogging, jumping, and sports that involve sudden changes of direction are permanently off-limits for most people with hip replacements. These activities create forces that exceed what the implant and surrounding bone can safely handle. Even if your hip feels strong and pain-free after a few months, the implant itself does not get stronger — only your muscles do.

Contact sports like football, basketball, and martial arts are also prohibited because they risk falls and direct blows to the hip. Even non-contact sports like tennis, racquetball, and skiing involve twisting and pivoting that can damage the implant or cause dislocation. Swimming and walking on flat ground are generally safe and encouraged, but always check with your surgeon before starting any new activity.

Repetitive high-impact activities — even ones that seem gentle — can loosen the implant over time. This is called aseptic loosening, and it happens when the constant stress causes the implant to shift slightly in the bone. Once loosening starts, it usually requires revision surgery (a second operation to replace the failed implant). This is why your surgeon will ask you to avoid activities like long-distance running, heavy construction work, or jobs that require you to stand and walk all day.

Twisting, rotating, and pivoting movements to avoid

Sharp twisting of your torso while your leg is planted is dangerous because it forces your hip to rotate in ways the implant cannot safely handle. This includes movements like reaching behind you while standing still, pivoting on one leg to turn around, or swinging a golf club. Even seemingly small movements like stepping sideways or reaching across your body can stress the joint if done too quickly or with too much force.

Internal rotation — turning your hip inward — is the most restricted movement. This is why you cannot cross your legs, sit with your foot turned inward, or sleep on your stomach. External rotation — turning your hip outward — is usually safer, but your surgeon will tell you the specific limits for your implant based on the surgical approach used (anterior, posterior, or lateral).

Pivoting on your operated leg is particularly risky. If you need to turn around, move your whole body by taking small steps rather than twisting on one leg. This applies even after you feel fully healed. Many people with hip replacements learn to move differently permanently — it becomes automatic over time.

Driving and sitting restrictions during recovery

You cannot drive until your surgeon says it is safe, which is usually 4 to 6 weeks after surgery. The reason is not just pain or weakness — it is that driving requires you to bend your hip past 90 degrees to get into the car, and it requires quick reflexes and the ability to press the brake pedal hard in an emergency. If you are hit or have to brake suddenly, the force could dislocate your hip.

When you do return to driving, you will need to modify your car. A seat cushion raises you higher so you do not have to bend as far to get in and out. A long-handled shoehorn or reacher helps you position your leg. Some people use a plastic bag on the car seat to help them slide in and out more easily. Ask your physical therapist for specific recommendations for your vehicle.

Sitting in general requires care during recovery. Low couches, recliners, and bucket seats force your hip to bend too far. Sit in firm, high chairs with armrests so you can push yourself up without bending your hip. Avoid sitting for more than 45 minutes to an hour at a time — get up and walk around to prevent stiffness and blood clots.

Sexual activity and intimate positioning after hip replacement

Sexual activity is not permanently forbidden, but it must be modified during recovery and sometimes permanently, depending on your implant and surgeon's recommendations. The main concern is positions that require extreme hip bending, rotation, or weight-bearing on the operated leg. Positions that keep your hip in a neutral, slightly bent position are generally safer.

Most surgeons recommend waiting 4 to 6 weeks before resuming sexual activity, and even then, you should move slowly and avoid positions that feel uncomfortable or unstable. Communication with your partner is essential — let them know your movement limits and stop when ready if you feel pain or instability. If you are unsure whether a position is safe, ask your surgeon or physical therapist directly; they have answered this question many times and can give you specific guidance.

When your surgeon may allow you to relax restrictions

Your surgeon will tell you when it is safe to gradually return to normal activities. This usually happens in stages over 3 to 6 months. At 6 weeks, you might be cleared to walk without a walker and to drive. At 12 weeks, you might be cleared to swim or ride a stationary bike. At 6 months, you might be cleared to walk on uneven ground or do light gardening.

However, some restrictions never go away. Most surgeons recommend avoiding high-impact activities permanently — no running, jumping, or contact sports, even years after surgery. This is not because your hip will fail when ready if you run, but because each impact adds stress that shortens the implant's lifespan. Hip replacements typically last 15 to 20 years, and avoiding high-impact activities helps them last as long as possible.

Your surgeon will give you a written list of permanent restrictions specific to your implant type and surgical approach. Keep this list and refer to it whenever you are unsure about a new activity. If you are planning to take up a new hobby or sport, ask your surgeon first — it is better to get permission than to damage your implant and need revision surgery.

Signs that you have pushed too hard and need medical attention

If you experience sudden sharp pain in your hip, a popping or clicking sensation, or a feeling that your hip is "slipping" or unstable, stop what you are doing when ready and contact your surgeon. These are signs of possible dislocation or other serious complications. Do not wait to see if it gets better on its own.

Increased swelling, warmth, or redness around the incision, combined with fever, can signal infection. Severe pain that does not improve with rest and ice, or pain that is worse than it was a week ago, also warrants a call to your surgeon. Numbness or tingling in your leg that is new or worsening should be reported as well.

Your surgeon's office should have an after-hours number for emergencies. If you cannot reach them and you suspect dislocation — your hip feels like it is out of place, you cannot move your leg, or you have severe pain — go to the emergency room. Do not try to "pop it back in" yourself.

Frequently Asked Questions

Can I ever run or play sports again after hip replacement?

Most surgeons recommend avoiding running and contact sports permanently because they create impact forces that can loosen the implant over time. Low-impact activities like swimming, walking, and stationary cycling are usually safe. Ask your surgeon about specific sports you want to do — some people with hip replacements do participate in activities like golf or bowling, but this varies by implant type and surgeon recommendation.

How long do I have to use the reacher and other adaptive tools?

You will need these tools for at least 6 to 12 weeks after surgery, and some people use them longer. Your physical therapist will tell you when your hip is strong enough and your movement is controlled enough to stop using them. Even after you are cleared to bend more, many people keep a reacher handy for safety.

What happens if I accidentally bend my hip too far or cross my legs?

One accidental movement usually does not cause dislocation, but repeated violations of your precautions increase the risk significantly. If you do bend too far or cross your legs, stop when ready and rest. If you feel pain, instability, or a popping sensation, contact your surgeon. Otherwise, be more careful going forward.

Can I sleep on my stomach after hip replacement?

Most surgeons recommend against stomach sleeping because it rotates your hip inward, which is dangerous for your implant. Sleep on your back or on your non-operated side with a pillow between your knees. Your surgeon will confirm the safest sleeping position for your specific implant and surgical approach.

When can I return to work after hip replacement?

This depends on your job. If you have a desk job, you might return in 4 to 6 weeks. If your job requires standing, walking, or physical labor, you may need 3 to 6 months or longer. Some jobs are not compatible with hip replacement restrictions — talk to your surgeon and your employer about what is realistic for your situation.