Total Hip Replacement
What is Total Hip Replacement ?
Total hip replacement (THR), also known as total hip arthroplasty, is the definitive treatment for end-stage hip arthritis and other disabling hip conditions that have failed non-operative management. The damaged femoral head and acetabulum are replaced with prosthetic components, restoring a smooth, pain-free articulation. Total hip replacement is widely recognised as one of the most successful operations in modern medicine, reliably relieving pain and restoring function in the vast majority of patients.
Dr Razvan Stoita has specific expertise in performing total hip replacement through the direct anterior approach using a ceramic-on-ceramic bearing. This combination of a minimally invasive, muscle-sparing approach with the most advanced bearing technology available is designed to deliver the best possible outcome in terms of early recovery, long-term durability and return to an active lifestyle.
The Direct Anterior Approach
The direct anterior approach (DAA) accesses the hip joint through a natural interval between muscles, without cutting or detaching any muscle or tendon. The patient is positioned supine on a specialised operating table, and a short incision is made at the front of the hip. The surgeon works between the tensor fascia lata and sartorius muscles superficially, and between the gluteus medius and rectus femoris in the deeper layer, to reach the hip joint. Because no muscles are cut, the structures responsible for walking and hip stability remain intact throughout the operation.
Ceramic-on-Ceramic Bearing Technology
The bearing surface of a hip replacement is one of the most important factors determining its long-term durability. Modern ceramic-on-ceramic bearings, made from fourth-generation mixed-phase alumina-zirconia ceramic (such as BIOLOX® delta), offer significant advantages over traditional metal-on-polyethylene or metal-on-metal bearings:
Who is suitable?
Total hip replacement with ceramic-on-ceramic bearing through the direct anterior approach is indicated for:
Dr Stoita will review your symptoms, activity goals, and any existing imaging. A detailed clinical examination is performed to confirm the diagnosis and discuss whether this procedure is the right option for you.
Initial visitX-rays, MRI or other imaging may be used to confirm the diagnosis and assess the extent of the condition. In complex cases, 3D computerised modelling may be used to assist with surgical planning.
Pre-surgeryThe procedure is performed under anaesthesia using the most appropriate surgical technique for your condition. Dr Stoita uses minimally invasive approaches where possible to reduce recovery time and optimise outcomes.
Day of procedureMost patients stand and walk with a physiotherapist within hours of surgery.
Discharge home. Walking with a stick or crutches as a comfort aid.
Progressive increase in walking distance and return to light activities of daily living. No postoperative precautions are required.
Most patients are off walking aids and resuming driving and desk work during this phase.
Return to low-impact activities including walking, swimming and stationary cycling.
Gradual return to golf, hiking, skiing, tennis and other recreational activities.
Frequently Asked Questions (FAQ)
Hip resurfacing is an alternative to conventional total hip replacement in which the femoral head is reshaped and capped with a prosthesis rather than removed. The acetabulum is resurfaced with a separate cup that articulates with the femoral cap. Because the femoral head and neck are preserved, resurfacing maintains the natural biomechanics of the hip, conserves bone stock for any future revision, and can allow a remarkable return to high-impact activities in selected patients.
Traditional metal-on-metal hip resurfacing was introduced in the 1990s and gained widespread popularity in young, active patients because of its excellent functional results. However, concerns about metal ion release, adverse local tissue reactions (pseudotumours) and higher revision rates, particularly in women and patients with smaller femoral heads, led to a significant decline in its use.
ReCerf is a modern ceramic-on-ceramic hip resurfacing implant, developed specifically to address the limitations of metal-on-metal resurfacing while preserving the functional advantages of the resurfacing concept. It uses a fourth-generation alumina-matrix composite ceramic (BIOLOX® delta) for both the femoral cap and the acetabular cup, eliminating metal ions from the bearing surfaces.
ReCerf is one of the most significant advances in hip resurfacing and represents a true evolution of the procedure.
Piriformis syndrome is an uncommon cause of buttock and posterior thigh pain, caused by irritation or compression of the sciatic nerve by the piriformis muscle. Surgical release of the piriformis and decompression of the sciatic nerve is reserved for the small group of patients with severe, disabling symptoms that have failed prolonged non-operative treatment, and in whom other causes of sciatic nerve pain have been excluded.
Typically 1-2 hours for a standard primary hip replacement, though total time in the operating room (including anaesthesia setup and positioning) often runs a bit longer than that. Patients are usually in theatre for around 2–3 hours in total. Robotic-assisted and complex revision cases can take longer due to additional imaging-based planning and precision steps during the procedure.
The direct anterior approach is a muscle-sparing technique for hip replacement, where the surgeon accesses the hip joint through a natural interval between muscles rather than cutting through them. It’s one of several surgical approaches Dr Stoita uses, selected based on individual anatomy and clinical suitability. Dr Stoita will discuss which approach is right for you at consultation.
A significant cause of hip pain in women over 50 is greater trochanteric pain syndrome, often related to tears of the gluteus medius and minimus tendons, sometimes called the “rotator cuff of the hip.” These tendons are critical for hip stability during walking. When 6–12 months of physiotherapy, activity modification and injections don’t resolve symptoms, surgical repair can provide durable pain relief.
Please note, all surgical procedures carry risks. Please book an appointment with Dr Stoita to find out what the best treatment option is for you.
Robotic-assisted surgery is an important advancement in modern joint replacement. Combined with the concept of functional alignment, it allows the procedure to be tailored to each patient’s individual anatomy rather than following a one-size-fits-all approach. Dr Stoita routinely uses computerised and robotic surgical techniques for hip and knee replacement, and was NSW’s first surgeon to perform robotic total knee replacement using the NAVIO system’s 3D mapping technology.
Hip arthritis usually develops over time rather than from a single cause. The most common reason is gradual wear of the joint cartilage with age. However, many people develop it earlier due to subtle issues with the shape of the hip, when the ball and socket don’t fit perfectly, it creates uneven pressure that slowly damages the joint. Previous injuries, such as fractures or dislocations, can also speed up this process. In some cases, genetics, inflammation, or increased load on the joint (including higher body weight or repetitive stress) contribute.
Modern hip joint replacements are designed to last a very long time. Advances in materials and bearing surfaces mean hip replacements can now be performed in younger patients with good long-term durability. Registry data shows most implants remain in place for well over 20 years, provided no complications such as infection, fracture around the implant, or dislocation occur.
