| Summary: | A 24-year-old soccer player presented with right knee instability after a pivot shift trauma during soccer game. His past medical history included multiple Anterior Cruciate Ligament (ACL) reconstructions (three times). Last revision was one year previously using allografts. Meticulous analysis of the plain radiographs demonstrates widening of the tibial bone tunnel and less marked widening of the femoral tunnel (Fig. A). Magnetic Resonance Imaging (MRI) was performed for further evaluation. Coronal fatsuppressed T2- Weighted Imaging (WI) (Fig. B) and sagittal T1-WI (Fig. C) confirmed tunnel enlargement, particularly of the tibial tunnel (black arrows). Furthermore, no residual intact graft fibers could be visualized, in keeping with graft tear.
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