costochondritis
It is pretty common. There are joints between the ribs and the spine
that allow for up and down motion of the ribs when breathing. There are
no joints at the breastbone (sternum). Instead, there is a segment of
flexible cartilage between the end of the bony rib and the sternum. The
poin where the bone turns to cartilage is vulnerable; just as an iron
cord breaks right where it comes out of the iron, that transition leads
to damage to the cartilage. Anti-inflammatory drugs, such as ibuprofen,
naproxen, aspirin, Relafen, DayPro, and a number of others usually help.
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