A Comparative Study Of Two Kinds Of Articular Cement Spacers In The Treatment Of Chronic Hip Arthroplasty Infection

Purpose :To compare the therapeutic effect and clinical characteristics for the treatment of chronic periprosthetic hip joint infection with two-stage revision with two different kinds of articular bone cement spacers.Methods :A retrospective analysis was made of 42 patients who underwent cement spacer staging surgery for hip infection in our hospital from 2011 to 2018.According to inclusion and exclusion criteria,30 patients(30 hips)with chronic hip infection were included,including 18 males and 12 females,aged 39-88 years,with an average of(64.33±13.32)years old.15 patients in the treatment group(group I)were treated with a spacer made of "Stern's needle" as the intraoperative mould.15 patients in group II were treated with a joint cemented spacer made of femoral prosthesis and antibiotic containing cement,to compare the infection control rate,the postoperative range of motion of the hips and Harris hip score,hospital stays,hospitalization costs and incidence of the postoperative complications.Results: The average follow-up period was 28.03 months.The infection control rate of all patients was 90.0%,in which the infection control rate of group I was 86.67%(13/15),and that of group II was 93.33%(14/15).There was no significant difference between the two groups(P > 0.05).Compared with group I,group II had better hip motion [(78.33°±5.56°)vs(67.67°±7.29°),P<0.05] and Harris score was higher[(74.47±3.72)vs(70.18±4.54),P=0.006].The incidence of complications such as septal rupture(3 cases),septal dislocation(3 cases)and deep venous thrombosis(2 cases)in group I was higher than that in group II(P=0.035),while there was no difference between group I and group II in operation time(P=0.994),hospital stay(P=0.809)and intraoperative blood loss(P=0.436).In group I,11 patients(73.33%)completed the two-stage revison,and in group II,7 patients(46.67%)completed the two-stage revison.The completion rate of revision in group I was significantly higher than that in group II(P < 0.05).Conclusion :Two different types of articular cement spacers are effective in the treatment of chronic hip arthroplasty infection.Artificial joint surgery using articular cement spacers made of femoral prosthesis and antibiotic-containing cement provides patients with better hip motion and function during revision intervals.