Periostitis blade of a horned dinosaur. Periostitis Periostitis, also known as periostalgia, is a medical condition caused by inflammation of the periosteum, a layer of connective tissue that surrounds bone. The condition is generally chronic, and is marked by tenderness and swelling of the bone and pain. Acute periostitis is due to infection, is characterized by diffuse formation of pus, severe pain, constitutional symptoms, and usually results in necrosis. It can be caused by excessive physical activity as well, as in the case of medial tibial stress syndrome (also referred to as tibial periostalgia, soleus periostalgia, or shin splints). Congenital infection
John (given name) still the 20th most common name for boys on the Social Security Administration's list of names given in 2006. In modern times John is the most common name in the United States, born as a first or middle name by 39.93 people per thousand; of these, 72.86% have it as the given name. When the statistics of the name are compared to the population statistics of America, the approximate number of people named John in the USA is 12,328,091 and the number of Johns in the USA is increasing by 104,925 each year. "John" was also among the most common