الفهرس | Only 14 pages are availabe for public view |
Abstract Revision total hip arthroplasty in the presence of major acetabularbonydefects especially pelvic discontinuity continues to constitute a great challenge and controversy. This incidence of such big defects is likely to increase with the increase of the number of total hip arthroplasty being performed every year. - The success rate of reconstruction of AAOS type IIIdefects is good ( 85%) and comparable to the literature using other reinforcement rings and cages, trabecular metal and triflange cups - Our results for the use of the Ganz reinforcement ring for reconstruction of type IV defects entails a high rate of failure (45%). - Significantly lower failure rate (11-19%) reported for trabecular metal and triflange cups at comparable follow-up for reconstructing type IV defects (pelvic discontinuity). These implants maybefavorable for management of such severe defects. - The incidence of complications was much higher in type IV then in typeIII. - The most common complication was dislocation the aseptic loosening then septic loosening. - Using the multivariate Cox regression statistical analysis, the following factors were found to significantly affect survival of the reconstruction: age, type IVdefect, duration of surgery, the presence of co-morbidities, and complications. - The use of Ganz reinforcement ring for reconstructing acetabular defects in revision total hip arthroplasty is considered a successful method in comparison with other available methods especially in AAOS type IIIdefects. - In case of pelvic discontinuity, other methods like tantalum cups and custom components are preferred. |