Epidural Hematoma
Right high density biconvex mass, usually uniform density and sharp margins.
Chronic Subdural Hematoma
Image A, B, C: Axial CT image showing left hemispheric chronic subdural hematoma with neomembrane and compression of the left hemisphere.
Image D: Bilateral hypodense areas representing old blood, also demonstrating mass effect.
Acute Subdural Hematoma
Non-contrast axial CT (left image) showing a left hemispheric subdural hematoma with some blood tracking along the falx and concurrent intracerebral hemorrhage on the right.
Some compression is seen on the left with decreased visibility of sulci and soft tissue swelling on the posterior left occipital lobe.
The right image shows left increased density, concave mass usually less uniform, less dense, and more diffuse than epidural hemorrhage. Note compression of ventricles and midline shift. [Courtesy of Dr. J. Spears]
Triquetral Fracture
It is either a dorsal avulsion or body fracture. Look for tenderness dorsally, distal to ulnar styloid.
Shoulder Dislocation
PA view and transcapular view.
Scapular Fracture
Scapular Y of the shoulder.
Scaphoid Fracture
Scaphoid fracture of the wrist. The most common carpal fracture. Look for tenderness at the anatomic snuff box. Wrist x-ray is often negative.
Scaphoid and Distal Radius Fracture
Sail Sign
Anterior and posterior “sail” sign. When present they should alert you to the high probability for a fracture.
Rotator Cuff Tear
The x-ray on the left demonstrates a rotator cuff tear. The image on the right shows a rotator cuff tear with superior migration of the humerus.
