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Various kinds of information can be obtained from X-rays of the wrist: [5] Lateral view. Carpal malalignment - A line is drawn along the long axis of the capitate bone and another line is drawn along the long axis of the radius. If the carpal bones are aligned, both lines will intersect within the carpal bones.
When the X-ray is diagnostic and there is a convincing Terry Thomas sign it is a static scaphoid instability. When the scaphoid is made unstable by either the patient or by manipulation by the examining physician it is a dynamic instability. [11] SNAC. In order to diagnose a SNAC wrist you need a PA view X-ray and a lateral view X-ray.
In order to diagnose a SLAC wrist you need a posterior anterior (PA) view X-ray, a lateral view X-ray and a fist view X-ray. [8] The fist X-ray is often made if there is no convincing Terry Thomas sign. A fist X-ray of a scapholunate ligament rupture will show a descending capitate bone.
Scaphoid fracture. A scaphoid fracture is a break of the scaphoid bone in the wrist. [1] Symptoms generally includes pain at the base of the thumb which is worse with use of the hand. [2] The anatomic snuffbox is generally tender and swelling may occur. [2]
A Smith's fracture, is a fracture of the distal radius. [1] Although it can also be caused by a direct blow to the dorsal forearm [2] or by a fall with the wrist flexed, the most common mechanism of injury for Smith's fracture occurs in a palmar fall with the wrist joint slightly dorsiflexed. [3] Smith's fractures are less common than Colles ...
Frequency. ~15% lifetime risk [ 3 ] A Colles' fracture is a type of fracture of the distal forearm in which the broken end of the radius is bent backwards. [ 2 ] Symptoms may include pain, swelling, deformity, and bruising. [ 2 ] Complications may include damage to the median nerve.
X-ray: X-rays of the wrist are made in two directions: posterior-anterior (PA) and lateral. Radiographs are useful to diagnose or rule out possible bone fractures, a positive ulnar variance or osteoarthritis. The TFCC is not visible on an X-ray, regardless of its condition.
Radial inclination. The radial inclination of a distal radius fracture is shown in red in image at right. The angle is measured between: [4][5] A line drawn between the distal ends of the articular surface of the radius on an AP view of the wrist. A line that is perpendicular to the diaphysis of the radius. Radial inclination is normally 21-25°.