Hip Replacement Implants from DePuy

One of the most effective ways to reduce severe hip pain and restore mobility is hip replacement surgery. More than 249,000 total hip replacements are performed each year in the United States to replace worn and arthritic hip joints.¹ As the first orthopaedic company founded in the U.S., DePuy Orthopaedics, Inc. has been committed to helping surgeons and patients achieve excellence in orthopaedic care for more than a century.

Some Basics: How Does the Hip Work?

The hip joint is like a ball that fits in a socket. The socket portion of the hip is called the acetabulum. The femoral head at the top of the thigh bone (femur) rotates within the curved surface of the acetabulum.

In an artificial hip (also called a prosthesis), an acetabular cup usually comprised of a metal shell with a plastic or metal liner replaces the acetabulum. The femoral stem is inserted inside the femur, and the femoral head (or ball) fits inside the acetabulum. This connects the leg to the hip and allows for movement.

Primary Hip Replacement

The goal of hip replacement is to implant a prosthesis that relieves pain and restores the patient’s natural hip functions for the longest possible time, with the fewest complications. Below you’ll find information on some of the contemporary hip implants developed by DePuy Orthopaedics, Inc. There are many other hip implants available; your orthopaedic surgeon will ultimately determine which implant suits your situation best.

Acetabular Cup Options

ASR™ XL Acetabular Cup System

No implant or bearing material is best for all patients or medical conditions. Your surgeon will choose the optimum bearing surface for you. However, for many patients, the DePuy ASR™ XL offers significant benefits over a traditional hip replacement. While traditional hip replacement utilized relatively small femoral heads (the ball that fits into the socket), it is now recognized that a larger head offers greater range of motion and stability because it is more like the natural hip. The ASR XL System uses a high performance metal bearing and allows your surgeon to use a larger replacement head more like your natural thigh bone.

Hip Resurfacing vs. ASR XL System

You may have heard about hip resurfacing. An option for certain patients with strong bone density and structure, hip resurfacing may preserve bone by covering the worn hip joint surfaces with metal caps. However, hip resurfacing is a major surgical procedure that may require a larger incision than traditional hip replacement. For some surgeons, this procedure may also take more time to complete compared to a traditional hip replacement because hip resurfacing is more technically demanding than a traditional hip replacement. Fractures at the top of the femur (femoral neck) are a common concern after a resurfacing procedure. There are no clinical data showing that hip resurfacing offers greater functional results compared to other modern hip replacement options. ASR XL is an excellent alternative option to hip resurfacing and it is supported by strong clinical history.

Click here to view the brochure and learn more about the ASR XL System

View the Prescribing Information

The Pinnacle™ Acetabular Cup System

The Pinnacle Acetabular Cup System is designed so your surgeon can choose which bearing surface (liner) he feels will best meet your needs. Liners for use with the Pinnacle Cup include:

• AltrX™ Altra-Link™ Polyethylene, which is made of extremely strong plastic to resist wear
• Ultamet™ XL Large Diameter Metal, which is made of a special surgical grade metal. These liners are designed to improve the hip's range of motion and stability while resisting wear.

The outer shell of the Pinnacle acetabular cup is covered with a 3-dimensional porous coating. This coating provides a surface for the patient's tissue to attach creating a strong bond. This process is called biological fixation, meaning it holds the cup in place, instead of relying on bone cement.

Bone cement is a substance used for fixation of some artificial joints to the skeleton. It acts as a filler between the implant and the bone.

View the Prescribing Information

Femoral Stem Options

The Corail^® Femoral Stem

The Corail Hip is designed to preserve a patient’s existing bone while stimulating new bone formation around the implant. First released in 1986, this French-designed hip system has been implanted in over a quarter million patients with proven clinical success.

The Corail Hip is designed to restore a high range of motion and has a roughened surface texture, which is also coated with Hydroxyapatite, a bone-stimulating material. The roughened surface and bone-stimulating hydroxyapatite permits new bone to grow up to the implant for biologic fixation without the need for bone cement or other types of mechanical attachment. The distinctive Corail Hip design is also engineered to enable small incision (minimally invasive) total hip replacement surgery, such as the anterior approach.

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Summit^® Femoral Stems

The Summit family of femoral stems includes two options: a stem design that uses porous coating technology, helping facilitate tissue ingrowth around the new hip that creates a strong bond to hold the implant in place, and a stem designed to be cemented into place. Both stems are designed to increase the hip’s range of motion and restore mobility.

View the Prescribing Information for the Porous Coated Tapered Stem

View Prescribing Information for the Cemented Stem

S-ROM^® Modular Hip Stem

The S-ROM Modular Hip System has components that come in different sizes and can be positioned in different ways. It allows the surgeon to fit each new hip to fit a patient's individual needs.

View the Prescribing Information

AML^® Hip Stem

Active people who are considering a total hip replacement want to feel confident about their new hip for years to come. The AML® Hip System is a reliable, effective hip replacement option that has been in use since 1977.

AML implants are coated with a porous coating along the entire length of the hip stem. Doctors call this an "extensively coated" implant, which can help to minimize pain after recovery.^2,3 The porous coating also helps facilitate tissue growth around the new hip creating a strong bond holding the implant in place.

View the Prescribing Information

These are just a few of the options your surgeon can choose from when selecting the right hip replacement for you. To learn more, sign up for a free online information kit.

References:

1. Solucient, LLC.
2. Engh, C.A., et al. "Quantification of Implant Micromotion, Strain Shielding and Bone Resorption with Porous-Coated Anatomic Medullary Locking Prosthesis." Clinical Orthopaedics 1992; 285: 13-29.
3. Engh, C.A., et al. "Evaluation of Bone Ingrowth with Proximally and Extensively Porous-Coated AML Prostheses Retrieved from Autopsy." Journal of Bone and Joint Surgery, American Volume 1995; 77: 903-910.

Last Updated: 07/31/2007