Orthopaedics Non-healing sinus is a common clinical feature is chronic osteomyelitis. The most common frequent cause for this presentation is: A Resistant organisms B Retained foreign body C Presence of sequestrum D Intraosseous cavities 💡 Explanation Non-healing sinus is a common clinical feature is chronic osteomyelitis. The most common frequent cause for this presentation is: ✓ Correct Answer: C. Presence of sequestrum