Hip Replacement
What is hip replacement?
Hip replacement is a well-established operation for severe hip arthritis or joint damage that has not responded to non-surgical treatment. The worn ball and socket of the hip are removed and replaced with prosthetic components, with the aim of reducing pain and restoring movement.
Dr Varun Arora performs hip replacement surgery for patients across Melbourne and regional Victoria. Each operation is planned around the individual: the surgical approach, the implants and the use of planning technology are chosen to suit your hip, your health and your goals.
When is hip replacement considered?
Hip replacement is usually considered when arthritis pain limits walking, sleep or daily activities despite measures such as activity changes, weight management, physiotherapy, medication and, in some cases, injections. The decision is based on your symptoms and how they affect your life, not on x-rays alone. See Hip Arthritis.
Your surgical approach
Dr Arora performs the direct anterior approach for most of his patients. It reaches the joint through a natural gap between muscles rather than detaching them. His preferred incision is the bikini incision, which runs along the natural skin crease at the front of the hip. A longitudinal incision is used when it is the better option for your specific case. For some patients, another approach suits their anatomy or previous surgery better, and Dr Arora will recommend what is right for you.
Anterior Approach Hip Replacement
Bikini and longitudinal incisions, who the approach suits, recovery and specific risks.
Planning & technology
Accurate implant position and leg length are central to a well-functioning hip. Depending on your needs, Dr Arora may use:
3D planning. A CT scan is used to plan implant size and position before surgery. Some patients, such as those with a stiff lower back, also have x-rays taken sitting and standing so the plan can account for how the pelvis moves.
Robotic-arm assistance. A robotic arm helps carry out the 3D plan in theatre, while Dr Arora performs and controls every step.
What is involved in hip replacement?
Preparation of the bone
The damaged femoral head (the "ball") is removed, and the hip socket (acetabulum) is reshaped to accept the new implant.
Implantation
A prosthetic cup is fitted into the socket, and a stem and head are fitted into the thigh bone (femur). Together they form the new joint surfaces.
Alignment and testing
Leg length, hip mechanics and the stability of the joint are checked carefully before the incision is closed.
Your recovery
Most patients walk with assistance on the day of surgery or the following day, supported by the physiotherapy team. Rehabilitation continues over the following weeks and months as strength and confidence return.
Recovery at a glance.
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Day 0–1
Walking with a frame or crutches
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1–3 nights
Usual hospital stay
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2–6 weeks
Weaning off walking aids, return to desk-based work
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around 6 weeks
Driving, once cleared at review
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3 months
Most daily and low-impact activities
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Up to 12 months
Continued gains in strength and stamina
Everyone recovers differently. See Post-operative Recovery & Rehab Protocols.
General Risks Overview
IMPORTANT TO KNOW
As with any surgical procedure, hip replacement carries risks. Potential risks and complications include:
Infection
Blood clots (deep vein thrombosis or pulmonary embolism)
Dislocation of the new joint
Leg length difference
Fracture around the implant
Stiffness or ongoing pain
Implant wear or loosening, which may need future revision surgery
Nerve or blood vessel injury
Risks associated with anaesthesia
This is a general overview and not a complete list. Dr Arora will discuss the risks and benefits relevant to you in detail before surgery.
Hip Replacement Frequently Asked Questions
Deciding on surgery
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When hip pain is limiting your walking, sleep, work or the things you enjoy, and non-surgical treatment is no longer helping enough. There's no "right" x-ray stage. It's a decision about your quality of life that you make together with Dr Arora.
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There is no strict age limit. Younger, active patients are more likely to need a revision in their lifetime, which is factored into implant choice. Older patients are assessed on overall health and fitness rather than age alone.
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Structured exercise and education programs (such as GLA:D), weight management, physiotherapy, simple pain relief and walking aids can all help. Many people use these for years before surgery, and they also improve recovery if you do go ahead.
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Yes. A higher body mass index (BMI) increases the risk of wound problems, infection and some other complications. Even modest weight loss before surgery can help. Dr Arora will discuss this openly with you.
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Dr Arora performs the direct anterior approach for most patients, usually through a bikini incision. A longitudinal incision, or occasionally a different approach, is used where it suits your anatomy better. See Anterior Approach Hip Replacement.
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Typically a titanium cup and stem, a ceramic or metal ball, and a highly durable plastic (highly cross-linked polyethylene) liner. Components may be press-fit, so the bone grows onto them, or fixed with bone cement. The choice depends on your bone quality and age.
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Australian registry data show that the large majority of modern hip replacements are still functioning 15 to 20 years after surgery. Longevity depends on implant choice, positioning, activity level and general health.
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In selected healthy patients with arthritis in both hips, this may be an option. Otherwise the hips are done a few months apart. It depends on your general health and is discussed individually.
Preparing for surgery
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Keep active and do any prescribed "prehab" exercises, stop smoking, have any dental problems fixed, keep diabetes well controlled, and prepare your home (remove trip hazards, set up a firm, higher chair). See Preparing for Surgery.
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Some medications, including blood thinners, some arthritis and immune medications, certain diabetes medications and some supplements, may need to be paused. You'll get specific instructions. Please don't stop anything without advice.
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Up-to-date x-rays, and for many patients a CT scan for 3D planning. Blood tests and a pre-admission check are arranged before surgery.
In hospital
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Most patients have a spinal anaesthetic with sedation, and some have a general anaesthetic. Your anaesthetist will discuss the options with you before surgery.
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Usually around 1.5 to 2 hours, plus time in recovery.
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A combination of local anaesthetic placed during surgery, regular simple pain relief and stronger medication when needed. The aim is to keep you comfortable enough to walk and do your exercises.
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Most patients walk with a physiotherapist on the day of surgery or the next morning, usually with a frame or crutches.
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Usually one to three nights. Some patients benefit from a short stay in inpatient rehabilitation, which can be planned in advance.
Recovery
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Usually two to six weeks, moving from two crutches to one and then none as your strength and balance return.
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After an anterior approach, most patients have few or no formal movement restrictions. Other approaches may have specific precautions. You'll get clear advice before going home.
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The wound is closed with dissolvable sutures and covered with a waterproof dressing, so you can shower. Watch for increasing redness, swelling, discharge or fever, and contact us if any appear.
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By walking early, doing ankle and calf exercises, and taking blood-thinning medication for a set period after surgery. Some patients also wear compression stockings.
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Usually around four to six weeks, once you are off strong pain relief, can brake firmly and have been cleared at review. Check with your car insurer too.
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Desk-based work is often possible from two to six weeks. Physical work may take around three months. It depends on your job and your recovery.
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Most people can sleep on their back or either side within the first few weeks. A pillow between the knees often helps with comfort.
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Yes. You'll practise stairs with the physiotherapist before discharge. "Up with the good, down with the bad" is a helpful rule early on.
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Short flights are often possible after a few weeks. For long-haul flights, it's usually advised to wait around six weeks because of blood clot risk. Discuss your travel plans at your review.
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Usually when you feel comfortable, often after four to six weeks. Positions that are comfortable for your hip are best at first. Please ask if you have questions, as it's a common concern.
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Typically at two weeks, six weeks and around three months, then at one year and periodically after that.
Living with your new hip
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Walking, swimming, cycling, golf, gym work, hiking and doubles tennis are commonly enjoyed after hip replacement. High-impact running and contact sports place more load on the implant and should be discussed with Dr Arora.
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It may. You don't need a special card. Just let security staff know.
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Routine antibiotics before dental treatment are not generally required for most people with a joint replacement. Tell your dentist about your hip, and ask Dr Arora if you're unsure.
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A sense of uneven leg length is common in the first weeks as muscles adjust, and it often settles. Leg length is measured and planned carefully during surgery. Mention it at your review if it persists.
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Contact us promptly if you have fever, increasing wound redness or discharge, a sudden increase in pain or calf swelling. If you have chest pain or shortness of breath, call 000.
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Details of your implant are recorded with the Australian Orthopaedic Association National Joint Replacement Registry. The registry tracks how implants perform across Australia over time.
Trusted resources
These independent sources give more information about hip arthritis and hip replacement.
External links are provided for general information. Dr Arora is not responsible for the content of external websites.
General information only. Any surgical or invasive procedure carries risks. Before proceeding, you should seek a second opinion from an appropriately qualified health practitioner.
Pelvis & Hip Surgery in Melbourne
If you would like to discuss your symptoms or treatment options, contact Dr Varun Arora to schedule a consultation.