Which of the Following is a Hinge Joint

Question

Which of the following is a hinge joint?
A) interphalangeal
B) atlantoaxial
C) radioulnar
D) carpometacarpal

Accepted Answer

An interphalangeal joint is a hinge joint found between the phalanges of the fingers and toes, allowing them to flex and extend. The other options are not hinge joints - the atlantoaxial joint is a pivot joint, the radioulnar joint is a pivot joint or a planar joint, and the carpometacarpal joint is a saddle joint.