Joints are made up of bone, muscles, synovial fluid, cartilage, and ligaments. They're designed to bear weight and move the body. The hip joint is a ball-in-socket joint, which allows movement in many directions.
Inside the joint, cartilage cushions are the intersections between bones and absorbs synovial fluid, a lubricant that helps protect bones from friction. The rounded head of the femur forms a ball, which then fits into the socket of the hip, which is called the acetabulum.
The hip forms the primary connection between the bones of the body's lower limbs and the body's axial skeleton of the trunk and pelvis.
In discussing the problem, which is now identified as a hip problem, your doctor may well use the word osteoarthritis. Arthritis itself is a catch all phrase meaning an inflammation or breakdown of a joint, and that is all it means. It can affect any joint of the body, from toes to spine. It always implies some degree of pain, some degree of limitation of range of motion (stiffness), and some degree of objective evidence, usually seen as bony changes and/or excessive joint fluid on an x-ray.
Copyright, © M.E. Hecht, 2013
Your surgeon will make an incision, approximately 6 to 8 inches long down through layers of muscle and the hip capsule to gain exposure to the hip joint.
The surgeon then removes the natural ball of the femur and prepares the socket of the pelvis for the metal replacement components.
The metal cup and stem are covered with a rough titanium coating which grabs onto the body's natural bone. The bone will grow into these coatings, holding the implant in place.
A trial prosthesis is inserted to check the sizing of the prosthesis and to test its stability. If stable through a range of motion, the final device is placed.
The new prosthesis is put once more through a range-of-motion test to re-test its stability. Then the hip incision is closed from bone to skin.
After the wound is dressed, you'll be transferred back onto a gurney and taken to the recovery room. For a few days after surgery you could also have a drain placed in the hip to permit the escape and measurement of blood and fluid that would otherwise collect deep in the wound.
What is the Direct Anterior Approach to the hip?
The Direct Anterior Approach to the hip, or the DAA, is a minimally invasive surgical approach. With the DAA, the incision used to access the hip joint is made at the front of the hip area; other surgical approaches place the incision more toward the side or back of the hip.
DJO has partnered with experienced medical professionals from around the world to perfect this technique. A select group of orthopedic surgeons specialize in this exciting and innovative approach to hip replacement.
What makes the DAA different from other surgical approaches to the hip?
The DAA was developed specifically to minimize the risk of muscle and nerve trauma.
Using this surgical approach to perform total hip replacement can help reduce the chance of damaging the muscles and nerves located in and near the hip area.
Less muscle damage potentially means less blood loss, less pain, and quicker recovery to normal hip function. There is also less chance of dislocation of the hip after surgery because all of the stabilizing muscles remain intact.
How quickly can I regain mobility after DAA hip surgery?
Quicker return to function has been reported for patients who have had a total hip replacement with the DAA when compared with other surgical approaches. This could be due to reduced soft tissue trauma, which is the main goal of the DAA.
Because postoperative mobility often depends on preoperative mobility, your doctor may recommend pre-surgical exercises or activities to help shorten your recovery time.
Also, it is important to comply with the post-operative physical therapy regimen your doctor prescribes in order to regain your mobility more quickly and enjoy an active lifestyle without hip pain slowing you down!
Am I a good candidate for the DAA?
The DAA and the compatible DJO hip replacement components have been used successfully in patients with a variety of body types. Ask your orthopedic surgeon if the DAA is right for you!
How common is hip replacement surgery?
About 380,000 hip replacement surgeries occur in the U.S. every year according to the National Institute for Health.
What is involved in the surgical procedure?
The surgical procedure is conducted under general or regional anesthesia and generally takes 1 to 2 hours to complete.
Linear® Hip System
The Linear Hip stem is a titanium flat wedge stem designed for high stability. The wedge shape allows the stem to subside to stability and the flat edge provides enhanced rotational stability. Reported results of this type of stem design has extremely good clinical results.
The design features of the Linear stem make it inherent stability and an ideal implant for minimally invasive surgical approaches to hip arthroplasty.
Because no two patients are alike, the Linear Hip System features two different offset options and an extensive size range, so the surgeon can customize the fit to the individual patient.
Revelation® microMAX Total Hip
This shortened design offers improved maneuverability for implantation via minimally invasive surgery as well as promotes bone preservation.
The Revelation microMAX Hip System features a revolutionary hip (femoral stem) implant born from a multidisciplinary approach. This implant is designed specifically for active patients like you who suffer from pain due to arthritis or joint damage. In most cases, the implant allows patients to bear full weight immediately after surgery and facilitates fast recovery as well as regeneration of the femoral bone.
What are some of the benefits of this hip implant?
Several things make the Revelation femoral implant special. First, this system is based on the more comprehensive ilio-tibial band model. Secondly, studies have shown the implant to preserve 95% of bone stock after surgery. Its design also encourages the bone to regenerate.
Taperfill Hip System
The Taperfill Hip Stem is designed for high stability in a less invasive, soft tissue sparing approach to the hip. This shorter stem makes it easier to implant in the bone without over-stressing the muscles and soft tissues surrounding the hip. The shape of the Taperfill Stem was scientifically designed for excellent contact with the hard (cortical) bone, providing enhanced immediate and long-term stability.
It is the surgeon's goal to best match the natural anatomy and provide a well functioning hip. The Taperfill Hip System offers an extensive size range in two different offsets. This gives the surgeon multiple options to best fit the patient's bone and best match the patient's anatomy.
A Practical Guide to Hip Surgery: From Pre-Op to Recovery
This concise handbook tells you everything you need to know before you undergo hip replacement or resurfacing surgery, directly from an orthopedic surgeon who has performed countless hip surgeries and has undergone a double hip replacement herself!
Visit http://www.djoglobal.com/education/patient-education/hip for instructions on how to download your free copy of this amazing resource!