Anterior Hip Replacement and Muscle-Sparing Surgery

Anterior (Front) Approach Hip Replacement: A Muscle-Sparing Method in Hip Replacement Surgery

Hip osteoarthritis is a condition that makes daily life difficult due to complaints such as pain, joint stiffness, and limited mobility. When non-surgical treatments are no longer sufficient, hip replacement surgery is considered.

The anterior hip replacement method performed through small incisions is a tissue-friendly surgical technique that does not require cutting muscles or tendons when reaching the hip joint. This method, which minimizes tissue damage, is also known as muscle-sparing surgery. As a result, it reduces postoperative movement restrictions and allows patients to return to their active lives much more quickly.

At Daviva Health Group’s Department of Orthopedics and Traumatology, direct anterior hip replacement surgeries are successfully performed with the support of surgical experience and technological infrastructure.

You can find the answers to all the questions you may have, such as “When can I walk after direct anterior hip replacement surgery?” and “What is the difference of anterior hip replacement surgery?”, in our article.

What Is the Direct Anterior Hip Replacement Method?

The Direct Anterior (Front) Approach is a modern surgical technique that stands out among hip joint replacement surgeries with its minimally invasive and muscle-sparing features. In this method, the hip joint is reached through a small incision of approximately 8–10 cm made from the front of the thigh.

In traditional hip replacement surgery, important muscles and tendons at the back or side of the hip must be detached from the bone in order to access the joint. In the direct anterior method, however, the muscles are not cut or detached. Access to the joint is obtained only by sliding between natural tissue planes. This means preserving the muscles and soft tissues.

In the Direct Anterior hip replacement method, which is the approach most respectful of the body’s natural anatomy, the main muscle structures that keep the hip in place are not damaged, so the risk of the prosthesis dislocating is also minimized.

How Is Direct Anterior Hip Replacement Surgery Performed?

Direct Anterior surgery consists of a series of technical steps that require high precision and center on preserving tissue integrity.

The patient is positioned on orthopedic tables specially designed for this surgery. These tables allow the leg to be moved in every direction during the operation, enabling the surgeon to reach the joint through the narrowest possible area.
A small incision, usually 8–10 cm long, is made starting from the upper part of the pelvis at the level of the hip bone and extending toward the upper thigh.
The most important feature of this method is that the muscles are not cut. The surgeon uses the body’s natural anatomical spaces to separate the important muscle groups. A muscle-sparing window is created by moving the muscles and tendons only sideways.
After the hip joint is exposed, the femoral head (the top of the thigh bone), which has worn down due to arthritis, is removed. Then the socket (acetabular) area is carefully cleaned and shaped to receive the hip prosthesis.
First, a metal cup is placed into the socket, and a highly durable plastic (polyethylene) liner is locked inside it. Then the new joint structure is created with the metal stem placed inside the thigh bone and the ceramic or metal head attached to it.
During the procedure, the surgeon uses fluoroscopic X-ray imaging systems to confirm millimetric accuracy of the implants and equal leg length. This ensures the prosthesis fits the patient’s anatomy perfectly.
The implants used are usually coated with special biological materials that help bone grow into the metal. After the checks are completed, the muscles that were moved aside return to their natural position and the incision is closed with cosmetic stitches.

What Are the Advantages of Direct Anterior Hip Replacement Surgery?

The advantages of direct anterior hip replacement surgery performed through small incisions can generally be listed as follows.

It is a muscle-sparing technique. During surgery, the most important muscles and tendons of the hip are not cut. They are only moved aside through natural tissue planes. As a result, tissue trauma remains minimal and the rehabilitation process begins much faster.
Less pain is experienced after surgery. Since there is no incision in the muscles or detachment from bone, surgical injury is low.
Patients can usually begin walking with support on the day of surgery or the next day. While full recovery in traditional methods may take months, in this method it is limited to weeks.
Because the posterior soft tissue structures and capsule that keep the hip in place are fully preserved, the risk of dislocation (the ball separating from the socket) is reduced.
Strict precautions used in traditional hip replacement surgery, such as “do not bend more than 90 degrees” or “do not cross your legs,” are usually not needed with this method. Patients can perform daily movements such as bending and sitting much more freely.
Performed through a small incision of usually 8–10 cm, this procedure provides an aesthetic appearance and helps the wound heal more quickly.
The patient lying on their back during surgery and the use of live X-ray, or fluoroscopy, allows leg length to be measured millimetrically and the prosthesis to be placed at the most accurate angle.
Patients can usually start driving and return to desk work within 2–3 weeks.

Who Is Suitable for Direct Anterior Hip Replacement?

Although the Direct Anterior approach is an advantageous method, patient selection is critical for achieving the highest level of surgical success.

People who experience chronic pain due to hip osteoarthritis (arthritis), injury, or joint wear and whose pain cannot be relieved by non-surgical (conservative) methods such as physical therapy, medication, or injections.
Patients who want to return to life, sports, or daily active living as soon as possible and are willing to comply with the rehabilitation process.
Technically, it is preferred that the patient is not excessively overweight so that the joint can be reached between the muscles. Individuals with a Body Mass Index below 35 are generally the most ideal candidates for this technique.
This method has the highest success rate in cases where the patient has not previously undergone hip replacement surgery and does not require revision (prosthesis replacement).
Patients who can tolerate the surgical process and anesthesia and whose systemic health problems are under control.
Patients without severe hip dysplasia (congenital dislocation) or complex bone deformities and with standard joint anatomy benefit most from this muscle-sparing technique.

Who Is Not Suitable for Direct Anterior Hip Replacement?

Although Direct Anterior (Front) hip replacement surgery is a tissue-friendly method, it may be risky for some patient groups due to the narrow surgical field and technical difficulties.

Overweight or obese patients may more often experience wound healing problems and infection risks due to the depth of the surgical field. For this reason, alternative hip replacement surgical techniques may be used in these patients.
Excessive soft tissue sagging in the abdominal area may make access to the anterior incision site difficult. In addition, the incision site remaining under this tissue and staying moist may lead to delayed healing or fungal-like infections.
In individuals with very muscular thighs in particular, placing the prosthesis components through that narrow front window (incision) may be technically quite difficult.
In patients who have implants such as plates or screws in the pelvis or femur due to previous surgeries, it may not be technically possible to remove these components from the front.
Severe hip dysplasia (a shallow socket due to hip dislocation), anatomical deformities after major trauma, or serious abnormalities in bone structure may require traditional methods that provide a wider field of view.
In cases where bone stock is very insufficient or extremely fragile, the leg maneuvers used in the anterior hip replacement method may create a risk of fracture in the thigh bone.
Patients with serious vascular disease in the front part of the thigh or very poor skin quality in the groin area may experience wound healing problems.
Active fungal or similar skin infections in the groin or thigh area can pose an obstacle to this method because they increase the risk of germs being transferred to the newly implanted joint.

Recovery Process After Anterior Hip Replacement Surgery

The greatest advantage of the Direct Anterior approach is that, thanks to the muscle-sparing technique, the stages of recovery are climbed much more quickly.

The First Days After Surgery

To prevent the risk of blood clots and to start healing, you will stand up and take your first steps on the day of surgery with the help of a walker or crutches.
Usually on the afternoon of the day after surgery, when your pain is under control and you can perform basic movements (walking, climbing stairs), you are safely discharged home.
Light exercises such as the ankle pump taught to you in the hospital are started immediately to improve circulation.

The First 2 Weeks at Home

During this period, your focus should be on pain management and reducing swelling. Regular ice application and using the medications prescribed by your doctor will improve your comfort.

The special bandage on your surgical incision usually remains in place for 2 weeks. Keeping the wound clean and dry is critical to prevent infection risk.

To ensure safety, a walker or cane is continued during this period.

Weeks 3–6

Most patients begin walking independently without the need for a walker or cane starting from the 3rd week.
If you have stopped painkillers and feel comfortable, you can usually start driving and return to your desk job during this period.
Unlike traditional methods, there is usually no restriction in this method against bending your hip more than 90 degrees. You can carry out your daily activities more freely.

3 Months and Beyond

A return to high-performance activities is usually expected after the completion of the 3rd month.
Patients generally show 80–95% recovery within 3 months. Full muscle strengthening and complete tissue adaptation may take up to 1 year.

Things to Pay Attention to After Anterior Hip Replacement Surgery

Be sure to remove loose rugs, carpets, and electrical cords on the floor at home. Eliminating the risk of tripping and falling is the most important rule.
Place frequently used items such as your phone, remote control, glasses, medications, and water within easy reach from where you sit or lie down.
Install sensor night lights in areas such as the hallway and bathroom to ensure safety when getting up at night.
Using a raised toilet seat will increase your comfort so that you do not strain your hip.
Having sturdy grab bars you can hold onto in the shower and by the toilet helps you maintain balance.
Prepare a non-slip shower chair for the first days when you may have difficulty standing.
Create wide walking paths inside the home that are not blocked by items and where you can move comfortably with a walker or cane.
For the first 6 weeks, avoid repeated forceful hip flexion (pulling the knee toward the chest) and straight-leg raises to prevent muscle inflammation or overstrain.
Be sure to keep the surgical wound clean and dry for the period specified by your doctor. Make sure no water gets on your bandage.
Having a family member or companion with you during the first 7–10 days to help with household tasks such as cooking, bathing, and laundry will increase your recovery speed.

Frequently Asked Questions About Direct Anterior Hip Replacement

When can I shower after surgery?

The surgical incision is usually covered with special waterproof dressings. Unless your doctor says otherwise, you may shower 2–3 days after surgery. However, not rubbing the wound directly and keeping the area clean and dry so that moisture does not accumulate under the dressing is vital for the healing process.

When can I start driving?

Although the muscles are preserved with this method, reflexes must fully return for safe driving. If you have stopped painkillers and feel that you have enough strength to brake suddenly, you can usually start driving in the 2nd or 3rd week after surgery.

Will there be a leg length difference after surgery?

One of the greatest technical advantages of the anterior hip replacement method is that, because the patient lies on their back, live X-ray imaging called “fluoroscopy” can be used during surgery. This technology allows the surgeon to check leg length equality and the placement angle of the implants millimetrically, minimizing the risk of a difference.

Is there a risk of hip dislocation?

In traditional posterior approaches, the risk of dislocation is higher because the posterior soft tissues and capsule that keep the hip in place are cut. However, in Direct Anterior hip replacement surgery, these structures are fully preserved, so the risk of dislocation is low. As a result, strict restrictions such as “do not bend at 90 degrees” are usually not necessary.

How long does a hip prosthesis last?

Thanks to the materials used in modern hip prostheses and the special biological coatings that allow the bone to fuse with the metal, the lifespan of the prosthesis can be extended up to 20–25 years. Since the muscles are not damaged, the load on the prosthesis is distributed more evenly, supporting long-term success.

Can I travel by plane? What should I do at security gates?

For air travel, the period after the 4th–6th week, when the risk of clots has decreased, is generally preferred. The detectors at security gates may detect the metal in your prosthesis. In that case, it is enough to inform the staff.