The Gantzer’s Muscle

Courtesy: Prof Nabil Ebraheim, University of Toledo, Ohio, USA

GANTZER’S MUSCLE

• Is an accessory head of flexor pollicis longus.
• Seen in about 60% of cadavers.
• ORIGIN : Is variable.
• INSERTION :Inserts distally into ulnar border of flexor pollicis longus.
• NERVE SUPPLY:Anterior interosseous nerve.
• Location of muscle in relationship to anterior interosseous nerve or median nerve is variable
• Gantzer’s muscle can be involved in compression neuropathy of either median nerve or anterior interosseous nerve.