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A patient undergoes the procedure depicted in Figures A and B with standard components (non-gender specific). Which of the following outcomes most appropriately describes the difference in females compared to males for this procedure?
Greater implant survivorship
Decreased WOMAC scores
Increased rate of extensor mechanism rupture
Increased postoperative pain
Increased component osteoloysis
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An 80-year-old man has a Charnley all-polyethylene acetabular shell shown in Figure A. When defining failure as revision for any reason, what is the failure rate at 35 years for this type of prosthesis?
Less than 10%
20% to 30%
40% to 50%
50% to 75%
Greater than 75%
What surgeon is credited for designing the prosthesis seen in Figure A?
Sir Harry Platt
Austin T. Moore
Charles Frederick Thackray
A 56-year-old gentleman presents to your office one year after undergoing total hip arthroplasty with the implant seen in Figure A. He is concerned about the potential complications given the recent media attention his implant has received. He is currently asymptomatic. Which of the following statements is accurate regarding his prosthesis and future care?
He should have bi-annual LFTs measured, as metal ions are metabolized by the liver.
His risk of developing cancer is dramatically increased.
There is no correlation between activity level and serum levels of metal ions.
His prosthesis design is safe in women of child-bearing age as the ions cannot be transmitted via pregnancy.
His prosthesis design puts him at an increased risk for dislocation.
All of the following are true for a patient who underwent a metal-on-metal total hip arthroplasty (THA) EXCEPT?
they will have production of ionically charged wear particles
there is a higher cancer risk than with metal-on-polyethylene THA
they will have elevated levels of cobalt and chromium in the serum
they will have elevated levels of cobalt and chromium in the urine
there is a higher frictional torque than with ceramic on ceramic THA