Hip replacement is one of the most reliable operations in modern orthopaedics, replacing a worn or damaged hip joint with an artificial implant to reduce pain and restore movement. Most people who have the operation gain substantial relief, but the result depends on more than the surgery itself: careful patient selection, good preparation, the right implant, and committed rehabilitation all shape the outcome. This guide explains who benefits, how the procedure works, what recovery involves, the main risks, and how implant choices are made. It also covers how bone conditions such as osteomalacia can affect healing and implant decisions, so you can have a more informed conversation with your surgical team.
What Hip Replacement Surgery Is
Hip replacement, also called hip arthroplasty, is surgery that removes damaged parts of the hip joint and replaces them with manufactured components. The goal is to relieve pain, improve walking, and increase daily function. Most people have the operation because of arthritis, injury, or another condition that has damaged the joint beyond what non-surgical treatment can manage.
The hip is a ball-and-socket joint. The ball is the top of the thigh bone (femoral head), and the socket is part of the pelvis (acetabulum). In a total hip replacement, both surfaces are replaced. In a partial replacement, only the ball side is replaced, which is more common after certain hip fractures.
Surgeons describe the operation as routine but major. Outcomes are generally good when the right patients are selected and recovery is managed well.
Who Is a Candidate for Hip Replacement
Candidates are usually adults with persistent hip pain that limits sleep, walking, work, or daily activities. Imaging often shows advanced joint damage, but symptoms matter as much as scans. A surgeon weighs symptoms, general health, and the person’s goals before recommending surgery.
Typical signs that a hip replacement may be considered include:
- Pain that has not improved with physiotherapy, pain relief, weight management, or activity changes.
- Stiffness that makes it hard to put on shoes, climb stairs, or get out of a chair.
- Pain at night that disturbs sleep.
- Visible joint damage on X-rays or other imaging.
- Reduced ability to walk or keep up with normal routines.
Age alone is not a deciding factor. What matters is whether the benefits are likely to outweigh the risks for that individual. Younger, more active people may be offered surgery when symptoms are severe, while older adults with significant medical conditions may need additional assessment before proceeding.
Before Surgery: Preparation and Assessment
Preparation starts well before the operation. The surgical team usually reviews medical history, medicines, allergies, and any conditions that could affect healing or anaesthesia. Blood tests and imaging are common, and some people need a heart or lung assessment.
Practical preparation helps recovery go more smoothly. Consider these steps in the weeks before surgery:
- Discuss all medicines, including blood thinners, supplements, and herbal products, with your care team.
- Stop smoking if possible, as it affects wound healing and infection risk.
- Arrange help at home for the first weeks after discharge.
- Prepare your home by removing loose rugs and clutter and setting up a sleeping area on one level if needed.
- Practice using walking aids and learn the movement precautions your surgeon recommends.
- Attend any pre-operative education session offered by the hospital.
Some hospitals offer a prehabilitation programme with exercises to build strength before surgery. This can help some people recover more confidently, though the benefit varies from person to person. Building strength and fitness beforehand is generally worthwhile, particularly for people who have become less active because of pain.
How the Procedure Is Performed
Hip replacement is usually done under spinal or general anaesthesia. The surgeon makes an incision to reach the joint, removes damaged bone and cartilage, and fits the implant components. The operation commonly takes one to two hours, but timing varies.
There are several surgical approaches, and each has trade-offs. Your surgeon will choose based on your anatomy, their experience, and the implant used. The main approaches include:
- Posterior approach: an incision at the back of the hip.
- Anterior approach: an incision at the front of the hip.
- Lateral approach: an incision at the side of the hip.
The approach affects which muscles and tissues are moved during surgery, which can influence early recovery and movement precautions. No single approach is best for everyone. Research has not consistently shown one approach to be superior in long-term outcomes, so the surgeon’s familiarity and your individual anatomy are important considerations.
Total Versus Partial Hip Replacement
A total hip replacement replaces both the ball and the socket. A partial replacement, or hemiarthroplasty, replaces only the ball and is often used for certain hip fractures in older adults. Your surgeon will explain which type fits your situation.
What the Implant Components Are
A total hip implant typically has a cup that fits into the pelvis, a liner inside the cup, a stem that fits into the thigh bone, and a ball on top of the stem. Materials may include metal, ceramic, and specialised plastics. The combination is chosen to balance durability, wear, and the person’s needs.
Implant Options and How They Are Chosen
Implant choice is a technical decision made with your surgeon. There is no single best implant for every patient. Factors include age, activity level, bone quality, body weight, allergy history, and the surgeon’s experience with a given design.
The table below summarises common implant considerations in general terms.
| Implant Feature | What It Means | Typical Considerations |
|---|---|---|
| Bearing surface | The surfaces that rub together inside the joint | Ceramic-on-polyethylene and metal-on-polyethylene are common; choice depends on wear needs and allergy history |
| Fixation method | How the implant attaches to bone | Cemented implants use bone cement; uncemented implants rely on bone growing into a textured surface |
| Femoral stem | The part placed in the thigh bone | Stem design and length vary with anatomy and bone quality |
| Cup and liner | The socket component and its inner lining | Liner material affects wear and stability |
| Head size | The ball at the top of the stem | Larger heads may improve stability but can affect wear; the surgeon balances these factors |
Ask your surgeon which implant they plan to use and why. It is reasonable to ask about the expected lifespan of the implant and the follow-up plan. Implant registries in many countries track outcomes over time, and surgeons may use registry data to inform their choices.
Recovery After Hip Replacement
Recovery is a process, not a single event. Most people stay in hospital for a short period and begin moving with help soon after surgery. Early movement helps reduce complications such as blood clots and stiffness.
The first weeks focus on wound care, pain control, and safe walking. Physiotherapy is a core part of recovery. It helps restore strength, movement, and confidence.
Early Recovery in Hospital
In hospital, staff help with sitting up, standing, and short walks. Pain relief is adjusted so you can take part in therapy. You may be taught precautions, such as avoiding certain twisting movements, depending on the surgical approach.
Weeks and Months After Surgery
Most people notice steady improvement over the first few months. Walking aids may be needed for a period, and driving and work depend on individual progress and medical advice. Full recovery can take several months to a year, and some people continue to improve beyond that.
A practical recovery timeline looks like this:
- First days: gentle movement with support, wound checks, and pain management.
- First weeks: short walks, home exercises, and gradual increase in activity.
- First months: improved strength and stamina, return to many daily activities.
- Longer term: continued gains in strength and confidence with regular activity.
Physiotherapy and Exercise
Physiotherapy is tailored to the individual. It usually includes exercises for hip movement, buttock and thigh strength, and balance. Consistency matters more than intensity in the early stages. Follow the instructions from your care team rather than copying someone else’s programme. As recovery progresses, many people benefit from a structured exercise routine that includes strength training, flexibility work, and low-impact cardiovascular activity.
Risks and Complications
All surgery carries risks. Serious complications are uncommon, but they can happen. Your care team takes steps to reduce them, including infection control, blood clot prevention, and careful monitoring.
Main risks include:
- Infection at the wound or deeper in the joint.
- Blood clots in the leg or lung.
- Dislocation of the new joint, especially early on.
- Damage to nerves or blood vessels.
- Leg length difference or persistent stiffness.
- Loosening or wear of the implant over time.
- Reactions to anaesthesia or medicines.
Report warning signs promptly, such as increasing pain, redness, swelling, fever, chest pain, or shortness of breath. Early treatment improves outcomes. Most people who experience a complication recover well with appropriate care, but some complications can prolong recovery or require further surgery.
Hip Replacement and Osteomalacia
Osteomalacia is a condition where bones soften, usually because of problems with vitamin D, calcium, or phosphate metabolism. It can affect bone strength and healing. For someone considering hip replacement, this matters because the implant must anchor securely in bone.
If you have osteomalacia or are at risk of it, tell your surgical team. They may check vitamin D and calcium levels and review your medicines. Treating the underlying cause before surgery can support better bone health and may influence implant fixation choices.
Osteomalacia is not the same as osteoporosis, though both affect bone. Osteomalacia involves defective bone mineralisation, while osteoporosis involves reduced bone mass. Both can influence surgical planning, but they are managed differently. People with osteomalacia may need vitamin D supplementation and treatment of the underlying cause before surgery to optimise bone quality.
People with bone-softening conditions should ask:
- Whether bone health should be assessed before surgery.
- Whether blood tests for vitamin D and calcium are needed.
- Whether treatment should start before the operation.
- Whether cemented or uncemented fixation is preferred in their case.
- Whether follow-up bone monitoring is recommended.
Living With a Hip Implant
Most people return to a wide range of activities after recovery. Walking, swimming, cycling, and general fitness are commonly encouraged. High-impact activities may increase wear, so discuss your goals with your surgeon.
Good long-term habits support the implant and overall health:
- Keep active with low-impact exercise.
- Maintain a healthy weight to reduce joint stress.
- Attend follow-up appointments as advised.
- Report new or worsening hip pain.
- Tell any dentist or doctor about your implant, especially before dental work if your surgeon advises antibiotics.
- Protect bone health with adequate vitamin D and calcium as advised.
Regular follow-up helps detect problems early. Many surgeons review patients periodically, and some recommend imaging if symptoms change. If you notice a sudden change in how the hip feels or functions, seek advice rather than waiting for a routine appointment.
Questions to Ask Your Surgical Team
A good conversation with your care team reduces uncertainty. Bring a list of questions and, if helpful, a family member or friend. Clear answers help you make decisions that fit your life.
Useful questions include:
- Which type of replacement do I need, and why?
- Which implant will be used, and what is known about its track record?
- What are my movement precautions after surgery?
- How long will I need walking aids?
- When can I drive and return to work?
- What should I do if I notice signs of infection or a clot?
- Does my bone health affect the plan, including any osteomalacia concerns?
- What follow-up will I need?
Conclusion
Hip replacement can significantly reduce pain and improve quality of life for people with advanced hip joint damage. Success depends on careful patient selection, good preparation, appropriate implant choice, and committed rehabilitation. If you have a bone condition such as osteomalacia, discuss it early so your team can plan around it. Ask questions, follow your care plan, and report problems promptly to get the most from your surgery.
Frequently Asked Questions
How long does hip replacement surgery take?
Most hip replacement operations take about one to two hours, though the exact time depends on the surgical approach, the implant, and any unexpected findings. Preparation and recovery time in the operating suite add to the total. Your surgical team can give a more specific estimate for your case.
How painful is recovery after hip replacement?
Some pain and discomfort are expected after surgery, but modern pain management aims to keep it manageable so you can move and take part in therapy. Pain usually improves steadily in the first weeks. Tell your care team if pain is severe or getting worse, as this can be a sign of a problem.
When can I walk after hip replacement?
Most people begin standing and taking short walks with help within a day or so of surgery, depending on their condition and the surgeon’s instructions. Walking aids are often needed for a period. Progress varies, and physiotherapy guidance helps you advance safely.
How long do I need to use a walker or crutches?
Many people use a walker or crutches for several weeks, then transition to a cane or no aid as strength returns. The timeline depends on age, fitness, the surgical approach, and any complications. Your physiotherapist will guide the transition.
When can I drive after hip replacement?
Driving depends on which hip was operated on, your pain control, your reaction time, and local rules. Many surgeons advise waiting until you can brake safely and are no longer taking sedating pain medicine. Ask your surgeon for specific advice before driving.
What are the signs of infection after hip replacement?
Warning signs include increasing redness, warmth, swelling, or drainage at the wound, fever, chills, and worsening pain. Deep infection can also cause persistent pain and difficulty moving. Contact your care team promptly if you notice these symptoms.
Can the new hip dislocate?
Dislocation is possible, especially in the early weeks while tissues heal. Following movement precautions and doing strengthening exercises reduces the risk. If the hip dislocates, it usually causes sudden severe pain and inability to move the leg normally, and it needs urgent medical attention.
How long does a hip implant last?
Many hip implants last for many years, but lifespan varies with implant design, materials, activity level, body weight, and bone health. Your surgeon can discuss expected durability for the implant they plan to use. Regular follow-up helps detect problems early.
Does osteomalacia affect hip replacement?
Osteomalacia can affect bone strength and healing, which may influence implant fixation and recovery. It should be discussed with your surgical team so that underlying vitamin D or mineral problems can be assessed and treated. The right plan depends on your individual bone health.
What activities should I avoid after hip replacement?
High-impact activities such as running and contact sports may increase wear and are often discouraged, though advice varies by person. Early on, avoid movements that risk dislocation, as instructed by your surgeon. Low-impact activities like walking, swimming, and cycling are commonly encouraged once you have recovered.
