Treatment of inferior patellar pole avulsion fractures with pole resection and patellotibial cerclage wire.

ABSTRACT

The ideal treatment for avulsion fractures of the inferior pole of the patella has not yet been identified. The options include internal fixation of the pole fragment and resection of the avulsed fragment along with the repair of patellar ligament to the patella. The purpose of the present study was to evaluate the result of pole resection with repair of patellar ligament with augmentation by patellotibial cerclage. We retrospectively studied 13 of patients who had operative treatment of an avulsion fracture of the inferior patellar pole by pole resection with trans-osseous suture fixation of the tendon to the patella and reinforcement of ligament patella with patellotibial cerclage wire. Thirteen patients who had had pole resection were followed for an average of 3 years. The average patellofemoral score (maximum, 100 points) was 88.8 points. Normal patellar height was found in thirteen patients. In patients who have sustained an avulsion fracture of the inferior patellar pole, the normal height of the patella can be maintained by transosseous suture fixation of the tendon to the patella and patellotibial cerclage after pole resection. The present study indicates that patellotibial cerclage can provide better clinical results and avoid prolong postoperative immobilization.