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  • Title: Arthroscopic treatment of nonunited anterior cruciate ligament tibial avulsion fracture with figure-of-8 suture fixation technique.
    Author: Zhao J, Huangfu X.
    Journal: Arthroscopy; 2007 Apr; 23(4):405-10. PubMed ID: 17418334.
    Abstract:
    PURPOSE: The purpose of this study was to evaluate the clinical results of arthroscopic treatment of nonunited anterior cruciate ligament (ACL) tibial avulsion fracture with a figure-of-8 suture fixation technique. METHODS: Nineteen cases of nonunited ACL tibial avulsion fracture were treated with an arthroscopic figure-of-8 suture fixation technique. The patients were followed up and evaluated according to the International Knee Documentation Committee, Lysholm, and Tegner rating scales. RESULTS: The time interval between the previous injury and this operation was 1 to 8 years, with a mean of 3.6 years. Eighteen patients were followed up for more than 2 years (range, 24 to 30 months; mean, 26 months). The fracture was united within 3 months after surgery in all cases. At the latest follow-up, there was neither extension nor flexion limitation in all patients. With the exception of 1 patient who had a 1 degrees positive Lachman test with a firm end-point, all of the patients had a negative Lachman test. The side-to-side difference in knee anterior laxity was 0 to 2 mm in 17 patients and 4 mm in 1 patient. The Lysholm score was 91 to 100, with a mean of 96.7 +/- 1.9 (compared with 74.3 +/- 4.6 before surgery, P < .05). Fifteen patients returned to their former activity level. The Tegner scores before injury, preoperatively, and at latest follow-up were 6.1 +/- 0.6, 3.6 +/- 1.0, and 6.0 +/- 0.8, respectively; there was no statistically significant difference between the preinjury and postoperative Tegner scores (P > .05). According to the International Knee Documentation Committee scale, 17 patients' knees were graded as normal and 1 patient's knee was nearly normal. CONCLUSIONS: Arthroscopic treatment of nonunited ACL tibial avulsion fracture with a figure-of-8 suture fixation technique can ensure fracture healing and restore the stability and function of the joint in most patients. LEVEL OF EVIDENCE: Level IV, therapeutic case series.
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