How a heavy blow on the side of the head may cause deafness?

A heavy blow to the side of the head can cause deafness by damaging the structures of the ear, such as the eardrum or the bones in the middle ear, leading to conductive hearing loss. It may also result in trauma to the inner ear, affecting the cochlea or auditory nerve and causing sensorineural hearing loss. Additionally, the impact can lead to swelling or bleeding that interferes with auditory function. In severe cases, it may cause a concussion, which can further affect hearing and balance.