Arthroscopic treatment of displaced tibial eminence fracture
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Background
Avulsion fractures of the tibial intercondylar eminence are fairly common injuries requiring surgery for the optimal functional outcome. The purpose of this study was to assess the clinical and radiological outcomes of an arthroscopic treatment of displaced tibial intercondylar eminence fractures using a suspensory device.

Material and Methods
Five patients with type 2 and 3 displaced tibial intercondylar eminence fractures who received an arthroscopically assisted fixation using a double button device were enrolled from 2011 to 2012. Clinical assessment included the patient demographics, cause of injury, the delay before surgery, time for surgery, time to return to work and sport, the International Knee Documentation Committee (IKDC) and Lysholm knee scores. Stability was measured with the KT-2000 arthrometer with a force of 134 N. A side to side difference on the KT-2000 examination superior to 3 mm was considered as a significant and abnormal increase in the anterior translation. Radiological examination consisted of anteroposterior and lateral radiographs, as well as computed tomography (CT) scan of the affected knee. Clinical and radiological followup was done at 1, 2, 3, 6, and 12 months postoperatively and at final followup. CT-scan was performed before surgery and at 3 months followup.

Results
The median age of patients was 31 years. Mean followup was 27 ± 5.1 months. The average delay before surgery was 3 days. At final followup, the mean IKDC and Lysholm knee scores were, 93.9 and 94.5 respectively. All patients had a complete functional recovery and were able to return to work and to resume their sport activities. No secondary surgeries were required to remove hardware. No complication was noted. Bony union was achieved in all patients.

Conclusion
The arthroscopic treatment of displaced tibial intercondylar eminence fractures using a suspensory system provided a satisfactory clinical and radiological outcome at a followup of 2 years.

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