Fixation of Periprosthetic Femur Fractures Above Total Knee Arthroplasty With the Less Invasive Stabilization System: A Midterm Follow-up Study

摘要: Background: The complication rate of periprosthetic femoral fractures above well-fixed total knee arthroplasties is high. Less Invasive Stabilization System (LISS) was introduced to reduce surgical dissections at the fracture site. purpose this retrospective study evaluate midterm functional outcome a group patients with treated LISS. Methods: Between January 1999 and June 2004, 23 consecutive (all women) were mean age 77 years (range, 61–90 years). Results: Nineteen (83%) seen after follow-up 46 months 26–67 months). Three (13%) died, one patient (4%) lost follow-up. A proximal screw pull-out internal fixator occurred in (4%). All healed within 14 weeks 9–21 weeks). No bone graft required. There two delayed unions, no nonunions or infections. One had malalignment 7° varus. range motion 102° 65–120°). score Knee Society 81 points 65–90 points), function 56 35–90 points). Conclusions: We found that minimally invasive, locked plating system permitted stable fixation, early good results, minimal complications. These techniques should be used place less more invasive methods.