🔍 What Is Panosteitis? Panosteitis is an orthopaedic condition most often seen in young, fast‑growing dogs. It affects the long bones and can cause intermittent discomfort that may move from limb to limb. 🦴 What Happens in the Body? The periosteum  (the outer layer of bone) becomes irritated or inflamed. Rapid growth during adolescence can add to the sensitivity, making movement less comfortable. The exact cause isn’t fully understood, but factors such as genetics, infectio