1. Soft Tissue Trauma

2. Achilles Rupture Disruption of the tendon - edema Normal

3. Achilles Rupture T2 image Focal high signal in tendon (white) Irregular appearance to tendon Tendon normally low signal (black)

4. Felt pop (“weekend warrior” athlete)

5. Knee injury Normal comparison

6. ACL Tear Normal comparison ACL

7. ACL Tear #2 Normal comparison ACL

8. Knee Trauma

9. Bone Contusions Patellar dislocation/relocation pattern Bone edema as result of contusion See high signal from bleeding/ fluid in bone marrow Kissing lesions during dislocation of patella

10. Knee pain Normal

11. Anterior horn lateral meniscus tear Anterior horn meniscal tear High signal with extension to the superior surface Normal

12. Knee Pain

13. Radial tear lateral meniscus Normal High signal medial posterior lateral meniscus = tear

14. Knee pain basketball player Normal

15. Jumper’s knee (patellar tendinosis/partial tearing) High signal from edema in the tendon and adjacent tissues Normal

16. Muscle Tear Coronal section of the thigh High signal on Fat suppressed images Fluid-Hematoma in adductor muscle group Compare to right thigh

17. Myositis Ossificans Amorphous bone formation in soft tissues Likely related to prior trauma

18. Widened Mediastinum Deceleration injury Widened superior mediastinum Must exclude positional factors (supine patient, AP film) CT can identify blood Angiogram to separate aortic injury from other vessel injuries

19. Aortic Tear Arch aortogram Arrow indicates area of aortic tear