The pubic symphysis is a joint made of cartilage connecting the left and right pubis bones of the pelvis. Slight movement occurs at the pubic symphysis, such as spreading, compression, and rotation between the two halves.(This answer provided for NATA by the University of Tampa Athletic Training Education Program).he pubic symphysis is a joint made of cartilage connecting the left and right pubis bones of the pelvis. Slight movement occurs at the pubic symphysis, such as spreading, compression, and rotation between the two halves. (This answer provided for NATA by the University of Tampa Athletic Training Education Program).