Complications Of A Hip Replacement

Overview

A hip replacement is surgery that replaces a damaged hip joint with an artificial part called an implant. Complications are problems that can happen after surgery. They may involve the wound, the implant, the bones, blood vessels, nerves, or the whole body. Many complications can be treated, especially when they are found early.

Minor problems such as swelling, bruising, and stiffness are common after hip replacement. Serious complications are much less common. Your risk depends on your health, the surgery, and your recovery care.

Anyone who has had a hip replacement can have a complication. Risk is higher in older adults and in people with diabetes, obesity, smoking, poor nutrition, a weak immune system, previous hip surgery, or blood-clotting problems. Hip replacement is very rare in children.

Symptoms

Common symptoms

• Pain that is getting worse instead of slowly improving
• More swelling, redness, or warmth around the hip or wound
• Fluid, pus, or blood leaking from the wound
• Fever or feeling generally unwell
• Calf pain, swelling, or warmth
• The hip feeling unstable, giving way, or making a clunk
• Sudden trouble putting weight on the leg
• Stiffness or a limp that is not improving
• A feeling that one leg is longer or shorter than the other

Symptoms in children

• Hip replacement is very rare in children. If a child has one, they may not describe pain well. Watch for crying, refusing to walk, guarding the leg, fever, swelling, or changes at the wound. Contact the child's specialist team.

Symptoms in older adults

• Older adults may have less obvious signs. Confusion, new falls, not wanting to walk, poor appetite, or feeling generally unwell can be signs of infection or other problems.
• Frailty and other health conditions can raise the risk of complications.

Causes

Main causes

• Complications are not a single disease. They can happen because of the surgery, the implant, the body's healing response, or events after surgery.
• Infection can happen if bacteria get into the wound or around the implant.
• Blood clots can form when movement is reduced after surgery.
• The hip can dislocate if the ball part slips out of the socket.
• The implant can loosen or wear down over time.
• Bones can break around the implant, especially if they are weak.
• Nerves or blood vessels can be injured during surgery, though this is uncommon.
• Some people notice a small difference in leg length or ongoing stiffness.

Risk factors

• Older age and frailty
• Obesity
• Diabetes
• Smoking
• Poor nutrition
• A weak immune system
• Blood-clotting problems
• Previous hip surgery or hip problems
• Weak bones, such as from osteoporosis
• Long-term use of steroid-type medicines
• Not following movement advice after surgery
• High-impact activity before your team says it is safe

When to see a doctor

See a doctor urgently if:

• You have a fever, or the wound is red, warm, swollen, or leaking pus.
• You have new calf pain, swelling, or warmth.
• Your hip suddenly feels unstable, gives way, or makes a clunk with pain.
• You cannot put weight on the leg or move the hip as before.
• You feel very unwell, dizzy, or cannot keep fluids down.

Book a routine appointment if:

• Pain or stiffness that is not improving.
• A limp or trouble with daily activities.
• A feeling that one leg is longer or shorter.
• Clicking, grinding, or other new hip noises.
• Questions about exercise, work, travel, or follow-up.

Diagnosis

A GP or orthopedic team will ask about your symptoms and check the wound, hip movement, leg length, pulses, and feeling in the leg. They may look for signs of infection, a blood clot, dislocation, or implant loosening. Your history and a physical exam often guide the next steps.

Tests that may be done

• Blood tests to look for infection or clotting problems
• A wound swab if there is discharge
• An X-ray of the hip and implant
• An ultrasound scan to check for a blood clot in the leg
• A CT scan of the chest if a lung clot is suspected
• A sample of joint fluid in some cases
• Other scans, such as MRI or CT, if infection or loosening is suspected

What to expect at your appointment

Your appointment may include a physical exam and simple tests. If a serious problem is suspected, you may be sent to hospital the same day. Bring a list of your medicines and details of your hip surgery.

Treatment

Treatment depends on the type of complication and how serious it is. Some problems need only monitoring, self-care, and follow-up. Others need medicine, a procedure, or more surgery. Your team will explain the options and what is safest for you.

Self-care at home

• Follow your wound care advice and keep the area clean and dry.
• Keep moving as advised and do your physiotherapy exercises.
• Use compression stockings or other aids if your team recommends them.
• Avoid falls by removing trip hazards and using walking aids if needed.
• Eat regular meals and drink enough fluids.
• Do not ignore new or worsening symptoms. Contact your team early.
• Take any prescribed medicines exactly as directed.

Medical treatments

Doctors may use antibiotics if there is an infection, blood-thinning medicines to prevent or treat clots, compression devices, physiotherapy, or pain relief as needed. Some people need a procedure to drain fluid, wash out the joint, or put a dislocated hip back in place. If the implant is loose, worn, or badly infected, revision surgery may be needed. Treatment is always tailored to the person and the problem.

When is surgery considered?

Surgery may be needed if the implant is loose or worn, if a deep infection cannot be cleared, if the hip keeps dislocating, if bone breaks around the implant, or if there is severe damage. Your team will discuss the benefits and risks with you.

Living with this condition

Recovery is different for everyone. Many people need weeks to months to get back to usual activities. Follow your team's movement advice, keep follow-up appointments, and ask for help with shopping, housework, and travel while you recover.

Lifestyle tips

• Stay active within the advice from your team.
• Walk regularly and do strength and balance exercises as guided.
• Keep to a healthy weight if you can.
• Stop smoking, and limit alcohol.
• Remove trip hazards at home and use good lighting.
• Use walking aids if your physiotherapist advises them.
• Avoid high-impact activities until your team says it is safe.

Diet and exercise

Eat regular meals with protein-rich foods, fruits, vegetables, and enough fluids. Ask your team or a dietitian if you have a poor appetite or trouble eating. Exercise as guided by your physiotherapist. Start slowly and build up over time.

Mental health and emotional wellbeing

It is normal to feel frustrated, anxious, or low during recovery. If these feelings last or you have thoughts of harming yourself, contact your local crisis support or emergency services right away. You are not alone, and help is available.

Prevention

Not all complications can be prevented, but you can lower your risk. Follow your recovery plan, attend follow-up visits, report problems early, and get help for infections quickly.

Vaccines

There is no vaccine that prevents hip replacement complications. Keep recommended vaccinations up to date and get advice before surgery if you are due any. Prompt treatment of infections can help.

Screening programmes

There is no routine screening for all hip replacement complications. Your team will check you after surgery and may use scans or tests if you have symptoms. Tell your dentist and doctors about your implant if you have other procedures, as advice can vary.

Complications

If left untreated

• An infection can spread and become serious.
• A blood clot can travel to the lungs and cause breathing problems.
• A dislocated hip can damage the implant, nerves, or blood vessels.
• Loosening or wear can cause pain, falls, and the need for more surgery.
• Stiffness and weakness can make daily activities harder.
• A fracture around the implant may need surgery.

Long-term outlook

Most people recover well after hip replacement, and serious complications are uncommon. If a problem happens, finding it early gives the best chance of successful treatment. Many people return to daily activities with advice and support.

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