Abnormal bone formation的用法和样例：
- The natural process of bone formation.
- Foraminal bone formation was seen only in the TLIF group.
- Aside from chronic inflammation, these conditions are all characterized by ankylosis, stiffness and fusion of bone in the spine and peripheral joints, prooked by abnormal cartilage and bone formation.
- The stiffening and immobility of a joint as the result of disease,trauma,surgery,or abnormal bone fusion.