Hallmark feature of osteomyelitis is:
The hallmark of osteomyelitis is the development of sequestra. A sequestrum is a segment of bone that has become necrotic because of ischemic injury caused by the inflammatory process.
Reference: White and Pharoah's Oral Radiology Principles and Interpretation 7th edition page no 320
Identification of sequestrum
Pain
Swelling
None of the above