Journal of Bone and Joint Surgery, 1970;52:269-273.
© 1970 by The Journal of Bone and Joint Surgery, Inc
Anatomical Course of the Thenar Branch of the Median NerveUsually in a Separate Tunnel Through the Tranverse Carpal Ligament
RICHARD K. JOHNSON M.D.1 and
MARVIN M. SHREWSBURY PH.D.2
1 Department of Surgery, Stanford University, Palo Alto, California 94305
2 Department of Anatomy, San Jose State College, San Jose, California 95114
In eight of ten laboratory dissections of the human hand, a definitive tunnel for the passage of the thenar nerve was observed and measured in the transverse carpal ligament near its distal margin. The presence of a cellulo-adipose covering about the thenar nerve was observed from its origin in the median nerve to and within the tunnel through the transverse carpal ligament.