Clinical Topic Orthopedics

Subtopic Trauma

Examination Region Knee

Key Points

• ACL disruption

• Bone marrow contusion

Image Findings

• A complete ACL disruption is demonstrated. (ACL = Anterior Cruciate Ligament; figure A)

• Bone marrow contusion is seen involving the lateral femoral condyle. (figures B and C)

IMAGES

• Sagittal T2-weighted Turbo-Spin-Echo (TSE)

  TR / TE = 3800 / 102 ms

  FOV = (150 x 150) mm²

  Matrix = (307 x 384) Px²

  Slice thickness = 3 mm

• Coronal T2-weighted Turbo-Spin-Echo (TSE) with fat suppression

  TR / TE = 3000 / 102 ms

  FOV = (150 x 150) mm²

  Matrix = (320 x 320) Px²

  Slice thickness = 3.5 mm

• Coronal T1-weighted Turbo-Spin-Echo (TSE)

  TR / TE = 749 / 20 ms

  FOV = (150 x 150) mm²

  Matrix = (435 x 512) Px²

  Slice thickness = 3.5 mm