Anterior Minimally Invasive Hip Replacement Surgery (AMIS)

What is an Anterior Minimally Invasive Hip Replacement Surgery (AMIS)?

Anterior Minimally Invasive Hip Replacement Surgery (AMIS) is a specialized hip replacement technique that involves creating a small incision at the front of the hip to replace the damaged joint. Dr van Niekerk, a pioneer in the field, routinely uses the bikini incision technique in South Africa, demonstrating his exceptional surgical skill. His expertise ensures that the surgical approach is notable for its cosmetic benefits, limited muscle disturbance, faster recovery times, and reduced postoperative pain.

The preservation of muscles and tendons and a much smaller surgical incision are what strongly characterise minimally invasive surgery. These surgical approaches are minimally invasive skin incision techniques designed to be muscle-sparing.

How do you perform an Anterior Minimally Invasive Hip Replacement Surgery (AMIS)?

With this less invasive anterior hip approach, Dr van Niekerk creates an incision over the front of the hip and removes damaged bone and cartilage. He can accurately place the hip implant through this small incision without disrupting nearby muscles and tendons.

The direct anterior surgical approach is known for its 'muscle-sparing' technique, which minimizes disturbance to surrounding tissue. This approach allows Dr van Niekerk to avoid cutting into sensitive muscle and soft tissue regions, thereby reducing pain and improving mobility post-surgery.

What are the benefits of AMIS Bikini Incision Hip Replacement?

• The incision along the skin folds promotes faster healing and a less noticeable scar, contributing to a more cosmetically appealing outcome.
• The appearance of a bikini scar is considered more cosmetically appealing than one from a vertical incision.
• Thanks to the less invasive nature of the procedure, patients can look forward to a quick return to their daily activities after the surgery.
• After the surgery, patients can expect minimal postoperative restrictions, allowing them to resume their normal activities sooner.
• Lower risk of surgical complications such as excessive bleeding, infection and hip dislocation.

While most patients are eligible for bikini-incision anterior hip replacement, a few with hip abnormalities may not qualify. After assessing the patient, Dr van Niekerk will determine the best surgical approach.

Who may benefit from AMIS hip replacement surgery?

Patients suffering from chronic hip pain, stiffness, arthritis, or reduced mobility may benefit from anterior minimally invasive hip replacement surgery. This procedure is commonly performed for:

• Osteoarthritis of the hip
• Rheumatoid arthritis
• Hip degeneration
• Hip joint damage
• Avascular necrosis
• Certain hip fractures

Each patient undergoes a comprehensive assessment to determine whether the bikini incision AMIS technique is the most suitable surgical option.

How Does the AMIS Technique Help Reduce the Risk of Hip Dislocation?

The anterior minimally invasive approach is associated with a lower risk of hip dislocation because important muscles and soft tissue stabilisers around the hip joint are preserved during surgery. Maintaining these natural stabilising structures can contribute to improved joint stability following the procedure.

This may also reduce the need for strict postoperative movement restrictions that are often associated with more traditional hip replacement techniques.

The AMIS technique is designed to minimise damage to the surrounding muscles, blood vessels, and nerves of the joint. Dr van Niekerk performs this procedure with meticulous precision, thereby reducing the risk of injury to adjacent tissues.

What can patients expect after AMIS hip replacement surgery?

Following AMIS bikini incision hip replacement surgery, patients typically begin mobilisation soon after the procedure. A personalised rehabilitation plan is provided to support recovery and help patients safely regain strength and mobility.

Postoperative care may include:

• Physiotherapy and guided rehabilitation
• Pain management
• Walking assistance during early recovery
• Follow-up assessments to monitor healing and implant function

Most patients gradually return to normal daily activities over the weeks following surgery.