Direct Anterior Total Hip Replacement

In any total hip replacement, the surgeon removes the worn-out cartilage and bone of the hip joint and replaces it with an implant — a metal stem placed into the femur (thighbone), a metal or ceramic ball that replaces the worn femoral head, and a metal cup that replaces the worn socket of the pelvis (AAOS OrthoInfo). The procedure itself is the same regardless of approach. What varies is how the surgeon reaches the joint.

The direct anterior approach reaches the hip from the front of the body, working between the natural planes of the muscles rather than cutting through them. By contrast, the more traditional posterior approach reaches the hip from behind and requires cutting and reattaching some of the muscles around the joint.

The key distinction: because the anterior approach is muscle-sparing — working around the muscles rather than detaching them — patients often recover the use of those muscles more quickly. This is the central reason the technique has gained popularity over the past decade.

The published evidence supports several short and medium-term advantages of the direct anterior approach:

• Faster early recovery. Patients generally walk and resume daily activities sooner than with traditional approaches.
• Lower risk of dislocation in the early recovery period. Because the posterior muscles and soft tissues that stabilize the hip are not disturbed, the risk of the new hip dislocating in the first weeks after surgery is reduced.
• Fewer activity restrictions after surgery. Many patients who undergo posterior approach hip replacement are asked to follow strict precautions — no bending the hip past 90 degrees, no crossing legs, no twisting — for several weeks. After anterior approach surgery, these precautions are typically less restrictive.
• Smaller, more cosmetically favorable incision. The anterior incision is on the front of the upper thigh and avoids the area patients sit and lie on.
• Intraoperative imaging. The anterior approach allows the surgeon to use real-time X-ray during surgery to confirm implant position and leg length — an advantage Dr. Bido relies on routinely.

All three modern surgical approaches to hip replacement — anterior, posterior, and lateral — produce excellent long-term results in skilled hands. What anterior offers is a smoother, faster early recovery; the destination is similar regardless of approach. The right choice for any individual patient depends on their anatomy, their stage of disease, their goals, and their surgeon’s experience and judgment.

This is why Dr. Bido’s practice is grounded in shared decision-making.

Dr. Bido is one of the relatively small number of practicing surgeons who have published peer-reviewed research specifically on the technical details of direct anterior hip replacement. Her work in this area includes:

• “Contribution of the Medial Iliofemoral Ligament to Hip Stability After Total Hip Arthroplasty Through the Direct Anterior Approach” — Journal of Arthroplasty, 2024. A biomechanical study examining how a specific ligament contributes to hip stability following anterior approach replacement.
• “Techniques for Minimizing Instability in Direct Anterior Approach Total Hip Arthroplasty” — AAOS Orthopaedic Video Theater, 2021. A surgical technique paper presented to the broader orthopaedic community.
• “The Influence of Surgical Approach on Rates of Symptomatic Venous Thromboembolism in Primary Total Hip Arthroplasty” — Hospital for Special Surgery, 2023.

This research background means that when Dr. Bido performs an anterior approach hip replacement, she is operating with both surgical training and the perspective of someone who has studied the technique academically.

Most candidates for hip replacement are also candidates for the anterior approach. Hip replacement is generally recommended when:

• Hip pain limits everyday activities such as walking, climbing stairs, or getting in and out of a chair
• Hip pain continues even at rest, including at night
• Stiffness in the hip limits the ability to move or lift the leg
• Anti-inflammatory medications, physical therapy, weight management, and walking aids no longer provide adequate relief (AAOS OrthoInfo)

Recommendations for hip replacement are based on pain and disability, not age. Most patients are between 50 and 80, but successful hip replacements have been performed at nearly every age (AAOS OrthoInfo).

Some patients have anatomy or prior surgical history that may make a different approach a better choice. This is one of the questions Dr. Bido evaluates during your initial consultation.

A thorough orthopaedic evaluation, including X-rays and a discussion of your medical history, current symptoms, and goals. If hip replacement is the right next step, Dr. Bido and her team will guide you through pre-surgical planning — medical clearance, dental clearance, weight optimization if relevant, and home preparation (AAOS OrthoInfo).

Anterior approach hip replacement is most commonly performed under spinal anesthesia, with sedation. The surgery itself typically takes 1 to 2 hours. The incision is on the front of the upper thigh, generally 3 to 4 inches in length.

Many anterior approach patients are now candidates for outpatient or same-day surgery — going home the same day rather than staying overnight in the hospital. Whether outpatient surgery is right for you depends on your overall health, support at home, and how the procedure goes (AAOS OrthoInfo).

• Day 1: Most patients walk with a walker or cane the day of surgery, often within a few hours.
• Week 1: Walking with assistive devices, basic self-care, focused on pain control and gradual mobility.
• Weeks 2 to 6: Stitches or staples are typically removed around two weeks. Most patients transition off assistive devices during this period and resume light daily activities.
• Weeks 6 to 12: Continued physical therapy. Most patients return to driving, work (depending on physical demands), and most everyday activities.
• Months 3 to 12: Continued strength gains and improved comfort. Long-term recovery is gradual; most patients feel substantial improvement at 3 months and continue improving for up to a year.

These are general timelines — your individual recovery depends on your starting condition, overall health, and how closely you follow your post-operative plan.

Total hip replacement has a low overall complication rate — serious complications such as joint infection occur in less than 2% of patients, and major medical complications such as heart attack or stroke are even less common (AAOS OrthoInfo).

Risks specific to any total hip replacement, including the anterior approach, include:

• Infection — superficial or deep, which may require antibiotics or further surgery
• Blood clots — in the leg veins or, less commonly, the lungs; a structured prevention plan is part of your post-operative care
• Dislocation — uncommon, particularly with the anterior approach, but possible especially in the early weeks
• Leg-length difference — surgeons make every effort to balance leg length, but small differences can occur
• Implant wear or loosening — over many years, the implant may wear; revision surgery may eventually be needed
• Nerve or blood vessel injury, fracture, persistent pain — uncommon but possible

Dr. Bido will discuss the risks specific to your situation during your consultation.