Total Hip Replacement

Total hip replacement, also called total hip arthroplasty, is a procedure used to treat severe hip pain and loss of function when the joint has been significantly damaged. It is most commonly recommended for patients with advanced osteoarthritis, but may also be used for rheumatoid arthritis, avascular necrosis, certain fractures, or other conditions that affect the hip joint. The aim of surgery is to relieve pain, improve mobility, and help patients return to everyday activities with greater comfort and confidence.

What is total hip replacement?

The hip is a ball-and-socket joint formed by the head of the femur and the acetabulum of the pelvis. In a healthy hip, these surfaces are covered with smooth cartilage that allows movement with minimal friction. When cartilage is worn away or the joint becomes damaged, pain, stiffness, grinding, and loss of movement can develop. Total hip replacement involves removing the damaged ball and socket surfaces and replacing them with prosthetic components made from materials such as metal, ceramic, and highly durable plastic.

When is hip replacement considered?

Hip replacement is usually considered when non-surgical treatment is no longer providing enough relief. This may include persistent groin or hip pain, stiffness, difficulty walking, pain at night, trouble putting on shoes or socks, reduced mobility, and declining quality of life despite medication, physiotherapy, injections, or activity modification. Surgery is recommended only after careful assessment of symptoms, joint damage, and the impact on day-to-day function.

Conditions treated with hip replacement

Total hip replacement may be recommended for a number of conditions affecting the hip joint. The most common is osteoarthritis, where the cartilage gradually wears away over time. Other indications include inflammatory arthritis, avascular necrosis, post-traumatic arthritis, hip dysplasia, and some fractures or fracture complications that cannot be managed effectively with joint-preserving treatment.

How the procedure is performed

Total hip replacement is usually performed under general anaesthesia, spinal anaesthesia, or a combination of both, depending on the patient and surgical plan. During the operation, the surgeon removes the damaged femoral head, prepares the socket, and inserts the new prosthetic components to restore smooth movement and alignment. The exact surgical approach and implant choice will depend on the patient’s anatomy, diagnosis, bone quality, and surgeon preference.

A typical total hip replacement procedure may include:

• Anaesthesia and positioning of the patient.
• An incision to access the hip joint.
• Removal of the damaged femoral head.
• Preparation of the acetabulum by removing damaged cartilage and bone.
• Insertion of the new socket component, sometimes with supplementary fixation.
• Preparation of the femur to accept the stem component.
• Insertion of the femoral stem and ball component.
• Reduction of the new joint and assessment of stability, alignment, and leg length.
• Closure of the tissues and skin.

Hip replacement implants

A total hip replacement generally consists of four main parts: a socket shell, a liner, a femoral stem, and a ball component. These implants may be fixed with or without cement depending on the bone and implant design. Modern hip replacements are designed to provide durable function, and many patients can expect good long-term performance, although prostheses can wear over time and revision surgery may eventually be needed in some cases.

Benefits of total hip replacement

The main goals of hip replacement are pain relief, improved mobility, and better quality of life. Many patients experience significant improvement in walking, sleep, daily activities, and general independence once the arthritic pain has been removed. Hip replacement is considered one of the most successful orthopaedic procedures for restoring function in patients with advanced hip joint disease.

Risks and complications

As with any major operation, total hip replacement carries potential risks and complications. These can include infection, bleeding, blood clots, dislocation, leg length difference, fracture, nerve or blood vessel injury, ongoing pain or stiffness, implant loosening, wear over time, and the need for revision surgery. Your surgeon will discuss the specific risks relevant to your condition, health, and proposed procedure.

Recovery after hip replacement

Recovery begins soon after surgery, with early mobilisation encouraged in most cases. Patients usually work with physiotherapists to begin walking and to learn exercises that improve strength, movement, and confidence. Many people notice a significant reduction in arthritic pain early in recovery, but full improvement continues over several months as strength and function return.

A general recovery pathway may include:

• Early walking with assistance and guided physiotherapy.
• Pain management, wound care, and swelling control in the first few weeks.
• Gradual return to daily activities such as walking longer distances, climbing stairs, and driving when appropriate.
• Progressive strengthening and mobility work over the following mo