Home > Skeletal System > Bones of the Chest and Upper Back > Xiphoid Process of Sternum. The xiphoid process is the smallest and most inferior region of the sternum, or breastbone. At birth, it is a thin, roughly triangular region of cartilage that slowly ossifies into a bone and fuses with the body of the sternum.
Some of the most prevalent diseases known to cause deafness include meningitis, Meniere'mÃ©niÃ¨re S, Disease Alport, syndrome, rubella and. Mumps there are two main causes of, deafness these are congenital and. acquired
In rare cases, tumours can also cause conductive hearing loss â they block sound from getting into the inner ear. Birth defects and diseases passed on by genes can do this, too. Genetics is one cause of sensorineural hearing loss. Half of all cases of profound deafness in children have a genetic source.