Search results
Results From The WOW.Com Content Network
To perform the test, the examiner grasps the wrist with their thumb over the scaphoid tubercle (volar aspect of the palm) in order to prevent the scaphoid from moving into its more vertically oriented position in ulnar deviation. For the test, the wrist needs to be in slight extension. The patient's wrist is then moved from ulnar to radial ...
X-ray images indicate scapholunate ligament instability when the scapholunate distance is more than 3 mm, which is called scapholunate dissociation. [7] A static scapholunate instability is generally readily visible, but a dynamic scapholunate instability can only be seen radiographically in certain wrist positions or under certain loading conditions, such as when clenching the wrist, or ...
The lunate bone (semilunar bone) is a carpal bone in the human hand. It is distinguished by its deep concavity and crescentic outline. It is situated in the center of the proximal row carpal bones, which lie between the ulna and radius and the hand. The lunate carpal bone is situated between the lateral scaphoid bone and medial triquetral bone.
This article about orthopedic surgery is a stub. You can help Wikipedia by expanding it.
A condition called scapholunate instability can occur when the scapholunate ligament (connecting the scaphoid to the lunate bone) and other surrounding ligaments are disrupted. In this state, the distance between the scaphoid and lunate bones is increased. [1]: 180 One rare disease of the scaphoid is called Preiser's Disease.
In orthopedic surgery, the lunotriquetral shear test or lunotriquetral shear maneuver involves stabilizing the lunate between thumb and index finger of one hand and the triquetrum between the thumb and index finger of the other. The pisiform and triquetrum are pushed in a palmar to dorsal direction. Discomfort in this area suggests the ...
The SL angle is an indicator of dorsal intercalated segment instability deformity (DISI). The SL angle goes between: [1] - A line through the long axis of the scaphoid bone. - A line perpendicular to the distal articular surface of the lunate bone. It should normally be 30°-60°. [1]
It is a congenital subluxation or dislocation of the ulna's distal end, due to malformation of the bones. Sometimes, minor abnormalities of other bone structures, often caused by disease or injury, such as a fracture of the distal end of the radius with upward displacement of the distal fragment.