👉 Osteophlebitis is a condition in which small, fluid-filled spaces called osteophytes between bones become infected. These can form when an infection occurs in one or both of the bones that are causing the pain. Symptoms may include swelling, redness, and pain around the area where the infection has occurred. It's important to see a doctor if you suspect osteophlebitis is affecting your health, as it can be life-threatening without prompt treatment.