Analysis of Circular Band Fixation Combined with 8-shaped Decreasing Tension Band in Treatment of the Comminuted Inferior Polar Fracture of Patella

Abstract：Objective To investigate the clinical effects of circular band fixation combined with 8-shaped decreasing ten-sion band in treating the comminuted inferior polar fracture of patella. Methods From August 2008 to August 2013,60 pa-tients were diagnosed with comminuted inferior polar fracture of patella. 35 cases of inferior polar fracture of the patella( group A)were operated as circular band fixation combined with 8-shaped decreasing tension band by wire,and 35 cases were opera-ted by cable. The range of motion( ROM)and the Bostman knee scores were applied to evaluate function of the knee. Results 28 patients of group A and 23 patients of group B were followed up for 12~15 months,the mean follow-up period was 13. 91 ± 0. 56 months. The heal rate and heal time were no statistical significance between two groups(P>0. 05). At the last follow-up. The range of motion(ROM)between two groups(A groups:130. 35 ± 7. 19,B groups:130. 35 ± 7. 19)had no statistical significance(P>0. 05). According to the Bostman knee scores,there were 15 excellent cases,10 good cases,3 fair case in group A,the excellent-good rate was 89. 29%,and the scores were 24. 25 ± 3. 21;there were 20 excellent cases,2 good cases, 1 fair case in group B,the excellent-good rate was 95. 65%,and the scores were 28. 35 ± 2. 21,and the scores had statistical significance(P<0. 05). Conclusion Circular band fixation combined with 8-shaped decreasing tension band with cable is an effective method to treat the comminuted inferior polar fracture of patella with few complications and favorable recovery.