Question
Thank you for your response, Dr. O'Brien.  No MRI that I am aware of.  Recently saw surgeon.  Patient was not examined.  Told her that he thinks she has a weak muscle and is sending her for more rehab / pool therapy.  

I remember from my school days (graduated CMCC 1987)the difference in internal rotation with the hip extended and at 90 degrees being mentioned, but I can't remember the significance of it.  I can't seem to find the answer in my references or on the internet, except in Hoppenfeld where he indicates, "Occasionally, the rotation range of an extended hip may differ from that of a flexed hip."  Unfortunately, he doesn't explain the significance.

Again, thanks for your response.

Mark

Answer
Hello Mark,

   You may want to refer her for a MRI of the hip to determine if it is cartilagenous or myofascial.  Often soft tissue work on the Glute Max/Med, TFL, and Piriformis will greatly increase mobility and ROM.  Increase her Calcium intake to at least 1200mg per day to prevent future fractures etc.

Let me know how everything works out.

Dr. Brendon O'Brien D.C.