Dual Mobility Hip Replacement is a French-designed hip replacement prosthesis. The different between dual mobility and other hip replacements is that in dual mobility the hip joint consists of two balls that are able to move one inside the other (hence the “dual mobility”). This configuration of one smaller ball moving inside the bigger ball allows excellent range of movement while allowing excellent stability, thereby reducing the chance that the hip joint could dislocate.

Having Mr Freedman has extensive experience with dual mobility hip replacement technology. Dual Mobility hip prostheses are of particular attraction when performing traditional approach hip replacement (e.g posterior approach), where the risk of dislocation of hip is a concern. Dual mobility prostheses may also be indicated in patients who have had previous spinal surgery and have reduced mobility in their lumbar spine.

Dual Mobility hip replacement can also be implanted via the Anterior Approach, but when using the anterior approach a dual mobility prosthesis is generally not necessary.  Anterior Approach Hip Replacements are extremely stable without the need to introduce more moving parts. If Mr Freedman is inclined to use a traditional surgical approach to the hip  for a particular patient (e.g  posterior or lateral approach) using a dual mobility design is useful. Mr Freedman is particularly inclined to suggest this option in large patients where the anterior approach may not be preferred but where added stability is required.

Patients with dysplasia or other unusual anatomy or patients who require revision (i.e re-do) surgery are also usually excellent candidates for Dual Mobility Hip Replacement.

Frequently Asked Questions (FAQ) regarding Dual Mobility Hip Replacement:

  • Is dual mobility technology new?

    No. Like many innovations in Orthopaedics, Dual Mobility Hip Replacement was developed in France and has been successfully used in Europe for many years. Dual Mobility (DM) hip replacement is relatively new to Australia and the United States but is rapidly gaining in popularity. Mr Freedman completed two hip surgery fellowships in Europe and subsequently brought this experience back to Australia.

  • Is a dual mobility hip replacement more expensive?

    Yes and No. Dual mobility implants are generally more expensive overseas as there are more moving parts, but the cost of prostheses in Australia is tightly regulated.  The cost of the orthopaedic implant used for your surgery will be covered by your health fund and you will not have any additional expense if a dual mobility prosthesis is utilised. Similarly, for uninsured patients the prosthesis company will ensure that you do not have any additional cost.

  • If the DM implants are so stable, why do you not use this design for all your hip replacements?

    Some surgeons do use DM for just about all their cases. However, in Mr Freedman’s experience the results from Anterior Approach Hip Replacement with standard design anterior hip replacement are so reliable that there is no advantage (but only potential disadvantage) in adding more complexity and more moving parts. A potential disadvantage of DM is that the greater number of moving parts may lead to earlier wearing out of the prosthesis. Mr Freedman finds that he obtains excellent results without using DM implants for standard cases and rather reserves the use of these implants for special clinical situations.  If you are particularly interested to receive a dual mobility hip replacement this can be discussed at your consultation.

  • When can I fully weightbear, return to usual activities and return to driving after dual mobility hip replacement?

    The choice of DM implant will not have any bearing on return to any activities. We allow patients to fully weightbear immediately after surgery and rehabilitate patients quickly, regardless of the particular implant used.

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Please contact our rooms of you wish to discuss dual mobility hip replacement or any other orthopaedic query.