Treatment of posterior cruciate ligament avulsion fracture with cannulated compression screw and odontoid spacer

Objective To explore the method and feasibility of using cannulated compression screw and odontoid spacer to treat the posterior cruciate ligament avulsion fracture.Methods Seventeen patients with posterior cruciate ligament avulsion fracture were treated by internal fixation with cannulated compression screw and odontoid spacer.All fractures were fixed firmly,and early postoperative functional exercises were performed.Results All cases were followed up for a period of 6 to 24 months(12.5±4.1 months).The ROM(range of motion) of knee joint was 117.4°±6.4° at 6 weeks after surgery,139.6°±5.5° at 6 months after surgery.And the decrease is 3.1°±1.1° in average compared with the uninjured side.According to the Sanders Scoring System for knee joint function evaluation,10 patients were graded as excellent resuls,5 good and 2 fair.Rate of excellent and good result was 88.3%.Conclusions Using cannulated compression screw and odontoid spacer to treat posterior cruciate ligament avulsion fracture is simple,reliable,which provides satisfactory curative effect.