Soft Tissue Trauma

Achilles Rupture• Disruption of the tendon - edema

Normal

Achilles Rupture

• T2 image• Focal high signal in

tendon (white)• Irregular

appearance to tendon

• Tendon normally low signal (black)

Felt pop(“weekend warrior” athlete)

Knee injury

Normal comparison

ACL Tear

Normal comparison

ACL

ACL Tear #2

Normal comparison

ACL

ACL

Knee Trauma

Bone ContusionsPatellar dislocation/relocation pattern

• Bone edema as result of contusion

• See high signal from bleeding/ fluid in bone marrow

• Kissing lesions during dislocation of patella

Knee pain

Normal

Anterior horn lateral meniscus tear

• Anterior horn meniscal tear• High signal with extension to the superior

surface

Normal

Knee Pain

Radial tear lateral meniscus

Normal

Normal

High signal medial posterior lateral meniscus = tear

Knee pain basketball player

Normal

Jumper’s knee (patellar tendinosis/partial tearing)

• High signal from edema in the tendon and adjacent tissues

Normal

Muscle Tear

• Coronal section of the thigh

• High signal on Fat suppressed images

• Fluid-Hematoma in adductor muscle group

• Compare to right thigh

Myositis Ossificans

• Amorphous bone formation in soft tissues

• Likely related to prior trauma

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

Aortic Tear

• Arch aortogram• Arrow indicates

area of aortic tear