Dual Mobility Hip Replacement is a modified form of Hip Replacement developed in France. Mr Freedman is highly trained in this procedure and feels that it offers particular advantages to certain groups of patients.

A dual mobility (DM) hip replacement is different to other hip replacements in that the hip joint consists of two balls (femoral heads) that are designed to move one inside the other. The result is that the overall joint is very stable – the movement (articulation) of the small ball inside the bigger ball allows excellent range of movement, while reducing the chance that the hip joint could dislocate.

Dual Mobility hip replacement can be implanted via the Anterior Approach, but Mr Freedman feels that when using the anterior approach, a dual mobility prosthesis is generally not necessary. Anterior Hip Replacements are usually extremely stable without the need to introduce more moving parts. However, for patients where Mr Freedman is inclined to use a different surgical approach  to the hip (such as a posterior or lateral approach) using a dual mobility design is very useful and often favoured. 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:

  1. Q: Is this technology new and therefore is it tried and tested?
    A: Like many innovations in Orthopaedics, Dual Mobility Hip Replacement was developed in Europe and has been successfully used there for many years. Dual Mobility (DM) hip replacement is relatively new to Australia but on the back of strong clinical results from Europe many implant companies have released or are bring DM designs to the Australian market.  Mr Freedman completed fellowships in Europe where he witnessed the excellent results obtained there and has subsequently brought this experience back to Australia.
  2. Q: Is a dual mobility hip replacement more expensive?
    A: No.  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.
  3. Q: If the DM implants are so stable, why do you not use this design for all your hip replacements?
    A: Good question. Some surgeons DO use DM for just about all their cases for just this reason. However, in Mr Freedman’s experience the results from anterior 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. 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.
  4. Q: When can I fully weightbear, return to usual activities and return to driving after dual mobility hip replacement?
    A: The choice of DM implant will generally not have any bearing on return to any activities. We will aim to rehabilitate patients quickly, regardless of the particular implant used.


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