allowed in competitions featuring them varies according to the perceived danger in their application. Armlocks are generally considered safer, while small joint manipulation and spinal locks are banned in nearly all combat sports. See also Chokehold Compression lock Grappling hold References Iverson, Steven. Unarmed Combat. Online excerpt: Atlasbooks. www.atlasbooks.com. Accessed March 6, 2006. Grappling positions Martial art techniques ja:アームロック