Biomedical Engineering Reference
In-Depth Information
3 Years 6 Years
14 Years 20 Years
Fig. 5.72
Sequential X-rays of the revision right cementless, calcar replacement type hip
replacement in the patient from Fig. 5.70. Note the asymmetrical wear pattern at 20 years.
After component removal, re-reaming of the acetabulum and femoral canal, a
press-fit cup without screws, a new UHMW polyethylene bearing (sterilized by
ethylene oxide) and a calcar replacement femoral component with a proper length
modular head to equalize lengths were all installed, followed by routine anatomic
closure. Trochanteric wires were used to stabilize the trochanter to the prosthesis.
