The purpose of this study was to quantify 3-dimensional (3-D) in vivo scaphoid kinematics during flexion-extension motion (FEM) and radial-ulnar deviation (RUD) of the hand. The right wrists of 11 healthy volunteers were imaged by spiral computed tomography during RUD and 5 of those wrists also during FEM. With a matching technique, relative translations… (More)
OBJECTIVE To show whether a difference in fine motor control exists between patients with chronic, undiagnosed wrist pain (CUWP) and healthy controls. Furthermore, a method to assess fine motor function of the wrist is evaluated. DESIGN A case-control study. SETTING The Academic Medical Center in Amsterdam, the Netherlands. SUBJECTS Twenty-seven CUWP… (More)
The purpose of this study was to quantify in vivo pisiform kinematics. Wrists of healthy volunteers were imaged by spiral computed tomography during ulnar-radial deviation (n = 11) and during flexion-extension (n = 5). Relative translations and rotations of the carpal bones were determined by using a 3-dimensional matching technique. The error of this… (More)
A very large neurilemmoma of more than 15 years duration, arising from the anterior interosseous nerve, is reported. To our knowledge, this is the largest ever described. While the symptoms and all other diagnostic findings suggested that the neurilemmoma originated from the median nerve, it needed angiography to provide the final diagnosis.
Dietary fat intake, with special emphasis on dairy products, was estimated from questionnaires for 42 underweight, 80 normal weight, and 64 overweight adult women. Frequency of consumption of fresh and processed meats, frozen dairy desserts, pastries, and snacks such as potato chips was greater for the overweight than for the underweight subjects. However,… (More)
This study investigated the activity of the extrinsic finger flexor muscles during active extension in the Kleinert splint. Electromyographic data on the activity of the profundus and superficialis flexor muscles in 10 healthy subjects were recorded with use of fine needle electrodes. The subjects exercised in the original Kleinert splint as well as in… (More)
An anomalous, digastric flexor digitorum superficialis in addition to a normal flexor digitorum superficialis to the index finger, is reported. To our knowledge, this is an anatomic variation never described before. The anomalous muscle belly presented as a progressive pseudotumor of the palm and needed exploration to provide the final diagnosis.
The metacarpophalangeal joint bears most of the stresses to which the thumb ray is subjected. Instability of this joint results in considerable functional impairment of the hand. Volar instability may be secondary to trauma, rheumatoid arthritis, or adduction spasms in cerebral palsy. The resulting hyperextension causes pain and weakness of pinch (Fig. 1).… (More)