Palmar aponeurosis
Aponeurosis palmaris · Dlaňová aponeuróza
Fascia & connective tissue
Looks like
A tough triangular sheet under the skin of the palm, spreading from the wrist toward the fingers.
What it does
Protects the tendons and nerves and firms the palm for grip.
Keeping it well
Thickens into cords in Dupuytren's disease, pulling fingers bent; treatment when the hand can't lie flat.