From 1965 to 1981, eleven patients with compression of the sensory
portion of the musculocutaneous nerve by the biceps aponeurosis and tendon
were seen at Duke University Medical Center and followed until the
completion of treatment. Four patients responded to non-operative
management. Compression of the nerve by the biceps aponeurosis and tendon
against the fascia of the brachialis muscle accounted for the
characteristic finding of nerve-flattening and loss of vascular markings in
the seven patients who required surgery. Surgical decompression relieved
the symptoms in all seven of them.