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Every nerve must have the capacity to adapt to different positions by passive movement relative to the surrounding tissue. This capacity is provided by a gliding apparatus around the nerve trunk. There is another level of gliding provided by the interfascicular epineurium which allows the fascicles to glide against one another. The clinical significance of(More)
Intradural spinal root lesions cannot be recognized by dissecting the brachial plexus and lead to ineffective surgery if they remain undetected. Therefore, patients need to undergo a diagnostic procedure to assess the intradural status of the spinal roots. Although motor recovery is the main goal of brachial plexus surgery, the techniques currently applied(More)
Neurolysis is a procedure which has to be performed if the gliding apparatus of a peripheral nerve does not function, and consequently, adhesions and fibrosis develop. The gliding tissue has to provide the ability for the nerve to adapt to the different position of the extremity by longitudinal passive movement. The paraneurium provides movements between(More)
In 10 patients with leprous ulnar neuritis, we investigated the most proximal site of lesion in the affected nerves. Spinal roots C8 and T1 were stimulated intraoperatively to evoke efferent mixed compound nerve action potentials which were recorded from the exposed ulnar nerves. The site at which amplitudes reached a maximum was considered the most(More)
One hundred and fifty upper extremities of 75 nonrandomized human cadavers were dissected to study the topographical relationship between the brachioradialis muscle tendon (BRMT) and the superficial branch of the radial nerve (SBRN). A split BRMT was found in nine arms, while in five of those nine arms the SBRN emerged from under the brachioradialis muscle(More)
The goal of this experimental study was to confirm the reliability of motor evoked potential (MEP) in testing the function of anterior motor roots in brachial plexus surgery. On central stimulation, nerve compound action potentials (NCAPs) are registered from the exposed spinal nerves. If NCAPs can be recorded, the anterior root is considered to be intact.(More)
This study was performed to investigate the mechanical properties of the median and the ulnar nerve in ten fresh cadaver extremities in situ and in a second series in vitro in a strain controlled testing equipment. In situ the nerves were fixed in the equipment at the level of the insertion of the pectoral muscle. The extensions of the nerves were tested in(More)
BACKGROUND In brachial plexus avulsion, a recent technique connects the ending of the disrupted musculocutaneous nerve to the side of the intact phrenic nerve to regain elbow flexion. This requires the phrenic nerve to perform a new double function: independent control of breathing and elbow flexion. Neuroplastic changes associated with acquisition of(More)
The present study has attempted to determine the volume, square measure as well as length, width and thickness of the individual muscles of facial expression by photogrammetry. 15 fresh male head specimens were employed for a careful dissection of muscle layers. The volume was measured using the immersion procedure. The mean values of each parameter(More)
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