Memo sent from Dr. Dorr to the American Association of Hip and Knee Surgeons that deals with what he feels is the cause for the hip implant failures:MEMO DATE: 4/22/08 TO: American Association of Hip and Knee Surgeons
FROM: Larry Dorr, M.D.
RE: This NOTICE is to inform you that we have had ten revisions in 165 hips and have four more that need to be revised using the Durom cup (Zimmer, Inc)This
Javad Parvizi, MD, FRCS, Michael Leunig, MD and Reinhold Ganz, MD
Dr. Parvizi is Associate Professor, Rothman Institute at Thomas Jefferson University Hospital, Philadelphia, PA. Dr. Leunig is Associate Professor, Department of Orthopedic Surgery, Balgarist University Hospital, Zurich, Switzerland. Dr. Ganz is Professor, Department of Orthopedic Surgery, Balgarist University Hospital.None of the following authors or the departments with which they are affiliated has received anything of value from or owns stock in a commercial
Revision of metal-on-metal resurfacing arthroplasty of the hip – THE INFLUENCE OF MALPOSITIONING OF THE COMPONENTS 2008
R. De Haan, MD, Resident in Orthopaedic Surgery1; P. A. Campbell, PhD, Research Scientist2; E. P. Su, MD, Orthopaedic Surgeon3; and K. A. De Smet, MD, Orthopaedic Surgeon4 1 University Hospital Brussels, Laarbeeklaan 101, 1090 Brussels, Belgium. 2 J. Vernon Luck Snr MD, Orthopaedic Research Centre, Orthopaedic Hospital/University of California Los Angeles, 2400 South Flower Street, Los Angeles, … Read the rest
During my several years of learning and reading about hip resurfacing, I have heard of two people having dislocations. There may be more, but I only know if people post their dislocation on the various discussion boards I belong to.
One young man was doing an exercise bringing his knee to his chest. His leg was tight and he jerk his knee toward his chest and caused a dislocation of his hip resurfacing.
One lady … Read the rest
The issue of cup slippage in the immediate postop
period is a controversial one.
While bone ingrowth takes around 6 wks. – the
hydroxy apatite to bone chemical reaction can occur
much more quickly.
If we surgeons feel that the
cup is not perfectly tight ( press fit) during the
surgery then we restrict activities for a 6 -8 wk
period .This is done in the hope that no
precipitating event would occur that would … Read the rest