El trayecto del nervio ulnar
(NU) en el miembro superior es de naturaleza constante.
He had loss of sensation over the extensor surface of forearms, hands and ulnar
side of both palms.
Patients will typically endorse pain along the ulnar
aspect of the thumb MCP joint.
Table 1 shows the results of motor NCS in median, ulnar
, common peroneal, and posterior tibial nerves.
Intermittent paresthesia, numbness and formication on the fifth finger and ulnar
side of the fourth finger are frequent early symptoms.
motor latency is usually unaffected in mild CTS, while ulnar
sensory latency rises (27,28).
The CMAPs amplitude (0.2 mV- the lower limit of ulnar
CMAP is 8.7 mV according to our EMG laboratory) were significantly decreased at all site of stimulations.
Its humeral head is small, and originates from the medial epicondyle; the origin of the ulnar
head is extensive, and it attaches to the medial margin of the olecranon and proximal two-thirds of the posterior border of the ulna.
A mid-lateral incision was planned along the ulnar
margin of the fifth finger, and two flaps, one volar- and one dorsal-based, were elevated in the shape of a book jacket.
nerve entrapment at the elbow, generally defined as cubital tunnel syndrome, represents the second most common compression neuropathy of the upper extremity.,, Etiology varies from either static factors due to bony and soft-tissue disorders (including osteoarthritis, cubitus valgus, ganglion, tumor, facial strictures, or accessory muscle) or dynamic components, such as minor repetitive injury secondary to increasing pressure within the cubital canal during elbow flexion or subluxation of the ulnar
In anteroposterior radiograph, varus of 20 degrees and paresthesias in the ulnar
nerve territory were observed.
Antidromic sensory nerve action potentials (SNAP) for median and ulnar
sensory nerves were recorded with standard ring electrodes.