We Want Your Feedback

Had your hip replaced? We want your feedback.

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For example, let us know:

  • How many times you’ve had hip replacement surgery
  • Did your hip dislocate afterwards?
  • Was there a significant change in your leg length?
  • Did you have to get readmitted to the hospital? And why?
  • Anything else you would like to share about your experience?

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For Patients

Although hip replacement is a common and typically successful procedure, every so often hip implants are not properly aligned, causing pain, dislocation and reduced mobility, and may even require a risky revision surgery. Typically surgeons align the hip implants by eye - similar to putting up a shelf without a level. This is why we are developing PelvAssist™.

Avenir products are currently not for sale

Hip Replacement

Hip replacement surgery involves the replacement of the femoral head and the acetabulum with prosthetic components, as shown below:

There are three types of hip replacement:

  • total hip replacement (shown above)

  • hip resurfacing (i.e. putting a metal cap over the existing femoral head rather than using a full ball and stem prosthetic)

  • revision surgery (i.e. a repeat surgery, for any reason)

Although hip replacement is a common and predominantly successful surgery, two surgical errors often occur: misalignment of the acetabular prosthetic, and unacceptable changes in patient leg length. If the error is severe, hospital readmission may be needed, including the need for a premature revision surgery. In fact, it is estimated that about 1 in 40 patients will suffer from alignment-related complications [1], [2] .

[1] Bini, Stefano A. et al. Does Discharge Disposition After Primary Total Joint Arthroplasty Affect Readmission Rates? Journal of Arthroplasty Vol 25, No. 1, 2010

[2] Mahomed, Nizar N. et al. Rates and Outcomes of Primary and Revision Total Hip Replacement in the United States Medicare Population Journal of Bone and Joint Surgery Vol 85A, No. 1, 2003

Hip replacement image courtesy of Corey Blenkarn