50 research outputs found
Removal of bone in CT angiography of the cervical arteries by piecewise matched mask bone elimination
Syllectometry: the effect of aggregometer geometry in the assessment of red blood cell shape recovery and aggregation
A four-dimensional-CT study of in vivo scapholunate rotation axes: possible implications for scapholunate ligament reconstruction
Additional fixation of the palmar scapholunate interosseous ligament has been advocated to improve the longterm results of dorsal scapholunate interosseous ligament reconstruction. To investigate the validity of this
approach, we determined normal scapholunate motion patterns and calculated the location of the scapholunate rotation axis. We hypothesized that the optimal location of the scapholunate interosseous ligament
insertion could be determined from the scapholunate rotation axis. Four-dimensional computerized tomography was used to study the wrist motion in 21 healthy participants. During flexion–extension motions, the
scaphoid rotates 38 (SD 0.6) relative to the lunate; the rotation axis intersects the dorsal ridge of the
proximal pole of the scaphoid and the dorsal ridge of the lunate. Minimal scapholunate motion is present
during radioulnar deviation. Since the scapholunate rotation axis runs through the dorsal proximal pole of the
scaphoid, this is probably the optimal location for attaching the scapholunate ligament during reconstructive
surgery