Tsarin cutar koronoid shine fitowar kashi a saman ƙarshen ƙashin ulna a hannun ɗan adam, wanda yake kusa da haɗin gwiwar gwiwar hannu. Yana samar da wani ɓangare na haɗin gwiwar hinge na gwiwar hannu kuma yana aiki azaman wurin haɗin gwiwa don tsokoki waɗanda ke sarrafa motsin haɗin gwiwa. Kalmar “coronoid” ta fito ne daga kalmomin Helenanci “korone” ma’ana “mai lankwasa” ko “kambi” da “eidos” ma’ana “siffa” ko “siffa”.