how many joints in the human body?
Prior to 1995 it was thought that there are 340 joints in the human body. In 1995 a scientific institute proved that the internal ear consists of 10 joints each (made up of cartilaginous matter). Thus 20 joints were added and the discovery was made that the human body consists of 360 joints.
In particular the link  Islam's claim about the 360 joints in the human body was proven to be true!  is included in this one paper as a proof of Islam SIX TIMES! Certainly this is sufficient proof of just how important this particular claim is for Abdallah's confidence in Islam.