Bone marrow is the soft tissue inside bones that is responsible for producing new blood cells. A bone marrow test (or biopsy) is a procedure that doctors use to examine the bone marrow inside certain bones.
The alveolus is the part of the bone that holds our teeth. The alveolus is made of alveolar bone. Some people with a cleft lip and palate can also have a cleft defect of the alveolus, where there is a gap in the alveolar bone. They sometimes also have a hole in the roof of their mouth which connects with their nose. This hole is called a fistula.
A bone anchored hearing aid (BAHA) is similar to other hearing aids, but instead of being inserted into the ear canal or held behind the ear, it is fixed to an implant in the skull. This implant is inserted in an operation under general anaesthetic, usually in two stages around three to four months apart.
A colonoscopy is a test that allows the doctor to look at the colon for any abnormalities. This is to confirm or rule out a condition or diagnosis. A colonoscopy is the ‘gold standard’ way of assessing the gut.