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Hip replacement procedure

If the non-surgical treatments no longer relieve pain and inflammation in your hip, you and your physician may consider total hip replacement. If you both decide that this is the best way to restore your ability to carry on your normal activities of daily life, the following information will be helpful for you to know.

The purpose of hip replacement surgery is to remove the two damaged and worn parts of the hip joint - the hip socket (acetabulum) and the ball (femoral head) - and replace them with smooth, artificial implants called prostheses, which will help make the hip strong, stable and flexible again.

 

Bone cuts

Implant components

Implanted

Bone cuts

Implant components

Implanted



Some questions you are probably thinking about are: what kind of implant device you will be receiving, what is it made of, and why is your surgeon using a particular kind of device? If you haven't discussed this with your surgeon, you should, because not all hip implant devices are made of the same material.

Due to significant advancements in technology, there is a new material for hip implant devices called OXINIUM Oxidized Zirconium that is a superior metal for use in hip implants. This is due to its hardness, smoothness and resistance to scratching and abrasion. It also exhibits superior performance characteristics over the alternative material options of cobalt chrome and ceramic. Ask your orthopaedic surgeon about OXINIUM and if it is the right implant option for you.

 

The hip implant is comprised of four parts that work together to restore the original function of your ball-and-socket joint:

  • A metal hip stem that is inserted into the top of your thighbone
  • A metal cup which holds the cup liner
  • A cup liner which holds the femoral head
  • The femoral head or ball which is attached to the hip stem and inserted into the liner to form the ball-and-socket joint

 

Hip implants are not one-size-fits-all, therefore your orthopaedic surgeon will choose the right hip implant for your body. Your surgeon will determine which design options will work best together to restore accurate leg length, while minimizing risks of dislocation and premature implant wear.

Important Testing Note:

The results of laboratory wear simulation testing have not been proven to predict actual joint durability and performance in people. A reduction in wear alone may not result in improved joint durability and performance because other factors, such as bone structure, can affect joint durability and performance and cause medical conditions that may result in the need for additional surgery. These other factors were not studied as part of the testing.

Important Safety Notes:

Hip replacement surgery is intended to relieve hip pain and improve hip function. However, implants may not produce the same feel or function as your original hip. There are potential risks with hip replacement surgery such as loosening, fracture, dislocation, wear and infection that may result in the need for additional surgery. Longevity of implants depends on many factors, such as types of activities and weight. Do not perform high impact activities such as running and jumping unless your surgeon tells you the bone has healed and these activities are acceptable. Early device failure, breakage or loosening may occur if you do not follow your surgeon's limitations on activity level. Early failure can happen if you do not guard your hip joint from overloading due to activity level, failure to control body weight, or accidents such as falls. Talk to your doctor to determine what treatment may be best for you.


1. Testing concluded at 45 million cycles. ISO 14242-1 defines test completion at 5 million cycles.

2. Australian Orthopaedic Association National Joint Replacement Registry Annual report. Adelaide: AOA; 2012.

3.  http://orthoinfo.aaos.org/topic.cfm?topic=A00377

 

The information listed on this site is for informational and educational purposes and is not meant as medical advice. Every patient's case is unique and each patient should follow his or her doctor's specific instructions. Please discuss nutrition, medication and treatment options with your doctor to make sure you are getting the proper care for your particular situation. The information on this site does not replace your doctor's specific instructions.