Periostitis 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 with syphilis can also cause
Operational Stress Injury part of operations", most commonly PTSD, major depression, and generalized anxiety. By 2016, the Canadian Parliamentary Standing Committee on Public Safety and National Security recognized OSIs as an issue faced by all first responder organizations, not just the military. As of late 2016, the Parliament of Canada is exploring a national strategy to address OSIs within the various public safety professions. The term does not as of yet have any regular use outside of Canada. The concept of operational stress injury is still emerging and evolving, and does not as of yet have a commonly accepted fixed definition. Research within