|flexor retinaculum (FR)
The flexor retinaculum forms a space between it and the unerlying carpal bones called the carpal tunnel. I am sure most of you have heard of or have had the carpal tunnel syndrome. In this syndrome, the structures under the retinaculum are compressed by swelling caused by irritation and inflammation and the median nerve is weakened. If left untreated, major paralysis to the small muscles of the hand can occur.
|The second connective tissue structure in the palm of the hand is the palmar aponeurosis. This sheet of tissue is under the skin of the palm and helps to form the ridges in the palm. The ridges, in turn, help increase friction so that we can grasp objects firmly. The tendon of the palmaris longus inserts into the aponeurosis and can be accentuated by grasping an object such as a ball.
The tendon is superficial to the flexor retinaculum.
|Bones of the Hand||Muscles & Tendons of the Hand|
|This is copyrighted© 1999 by Wesley Norman, PhD, DSc|