Mobile Bearing Hip

Mobile Bearing Hip

What is a Mobile Bearing Hip?

A mobile bearing hip is a type of hip replacement that incorporates a mobile or rotating bearing surface within the artificial hip joint. This design aims to improve the range of motion, reduce wear on the implant, and potentially extend the lifespan of the prosthesis. It features a mobile polyethylene liner that moves independently of the femoral and acetabular components, which helps to distribute stresses and minimize edge loading.

Hip replacement, also referred to as total hip replacement or total hip arthroplasty, is a surgical procedure in which a diseased or damaged hip joint is replaced with a prosthetic implant.

What is Anatomy of the Hip?

The hip joint is one of the body's largest weight-bearing joints and is the point where the thighbone (femur) and pelvis (acetabulum) join. It is a ball-and-socket joint in which the head of the femur forms the ball, and the pelvic acetabulum forms the socket. The joint surface is covered by smooth articular cartilage that cushions and enables frictionless movement of the joint. The bones are held together by bands of tissue called ligaments that provide stability to the joint.

What are the Indications for a Mobile Bearing Hip?

A mobile bearing hip is typically indicated in the following scenarios:

• Patients with a higher risk of dislocation, such as those with weak surrounding muscles or ligaments.
• Active individuals who require greater mobility and flexibility.
• Patients undergoing revision surgery where stability is critical.
• Patients with degenerative joint conditions, such as osteoarthritis, especially in younger or more active patients where implant longevity is a priority.

What is the Procedure for Mobile Bearing Hip Replacement Surgery?

The mobile bearing hip replacement surgery is typically performed under general or regional anesthesia and involves the following steps:

• The patient is positioned on their back or side to provide access to the hip joint.
• The surgeon makes an incision over the hip joint. The location and size depend on the surgical approach:
• Posterior approach: Incision at the back of the hip.
• Anterior approach: Incision at the front of the hip.
• Lateral approach: Incision on the side of the hip.
• Soft tissues and muscles are carefully retracted to expose the hip joint.
• The femoral head (top of the thigh bone) is dislocated from the acetabulum (hip socket) and removed.
• Damaged cartilage and bone are excised from the acetabulum, and the socket is prepared to receive the mobile bearing implant.
• A metal shell is fixed into the prepared acetabulum using screws or press-fit techniques.
• The mobile polyethylene liner (bearing surface) is placed inside the metal shell, allowing dual articulation.
• A metal shell is fixed into the prepared acetabulum using screws or press-fit techniques.
• The mobile polyethylene liner (bearing surface) is placed inside the metal shell, allowing dual articulation.
• The femoral canal is prepared to fit the metal stem of the implant.
• The femoral head (made of ceramic or metal) is attached to the stem.
• The femoral head articulates with the mobile liner in the acetabular cup.
• The surgeon moves the hip through its range of motion to confirm proper fit, alignment, and stability.
• The layers of soft tissue and skin are closed using sutures or staples, and a sterile dressing is applied to the surgical site.

What Does Postoperative Care for Mobile Bearing Hip Replacement Surgery Involve?

Postoperative care for a mobile bearing hip replacement focuses on pain management, wound care, and rehabilitation to restore mobility and function. Patients typically receive pain relief through medications and may begin gentle physical therapy within 24 hours to promote circulation and prevent complications like blood clots. Wound care and bathing instructions are provided to keep the wound clean and dry with dressings changed as instructed. Weight-bearing and activity levels are gradually increased, following the surgeon’s recommendations, to protect the new hip joint. Patients are encouraged to avoid high-impact activities and movements that risk dislocation. Follow-up appointments ensure proper healing, alignment, and implant functionality. Full recovery can take several weeks to months, depending on individual progress and adherence to rehabilitation protocols.

What are the Risks and Complications of Mobile Bearing Hip Replacement Surgery?

As with any surgery, mobile bearing hip replacement carries potential risks and complications, such as:

• Prosthetic wear and loosening
• Failure of mobile bearing
• Dislocation
• Nerve or vessel injury
• Persistent pain or stiffness
• Leg length discrepancy
• Allergic reactions
• General surgical risks, such as infection, bleeding, blood clots, or anesthesia complications

What are the Benefits of Mobile Bearing Hip Replacement Surgery?

Benefits of mobile bearing hip over traditional hip replacement procedure include:

• Enhanced range of motion
• Reduced wear
• Better stability
• Improved longevity
• Reduced risk of dislocation
• Decreased edge loading

Why Choose Dr. Jepson for Mobile Bearing Hip Replacement in Colorado Springs, CO?

• Board-certified orthopaedic surgeon: Dr. Jepson is certified by the American Osteopathic Board of Orthopaedic Surgery.
• Fellowship-trained joint replacement specialist: He completed advanced training in total joint arthroplasty at the Florida Orthopaedic Institute.
• Specialized hip experience: His clinical interests include total joint replacement, complex hip conditions, arthritis management and revision surgery.
• Individualized implant selection: Dr. Jepson considers joint stability, bone quality, anatomy, age and activity goals when recommending an implant.
• Experience managing complex cases: Mobile bearing implants may be considered for certain patients with a higher risk of instability or those undergoing revision hip replacement.
• Patient-centered communication: Dr. Jepson explains the available implant options, potential benefits and possible risks to support informed decisions.
• Comprehensive recovery support: Patients receive coordinated care throughout surgical preparation, treatment and postoperative rehabilitation.

Mobile Bearing Hip FAQs

Request a Mobile Bearing Hip Consultation in Colorado Springs

If arthritis, hip instability or problems with a previous hip replacement are limiting your mobility, schedule an evaluation with Dr. Eric K. Jepson at Colorado Springs Orthopaedic Group. He can assess your condition, explain the available implant options and determine whether mobile bearing hip replacement may be appropriate for you. Contact CSOG to request an appointment at its North or South Campus for specialized hip replacement care in Colorado Springs, CO, and surrounding Southern Colorado communities.