Final answer:
Osteomyelitis is an infection in the bone that can lead to abscess formation and sequestrum if not properly cared for. It is caused by bacterial infection, and treatment involves antibiotics and possibly surgery in severe cases.
Step-by-step explanation:
Osteomyelitis is an inflammation of bone tissues most commonly caused by infection. It can lead to abscess formation and sequestrum, which is a piece of dead bone that becomes separated during the healing process if not properly cared for. The infection can be caused by various bacteria, with S. aureus being the most common one. Diagnosis involves radiography, imaging, and identification of bacteria from blood or bone cultures. Treatment usually involves antibiotic therapy, and in severe cases, surgery may be required.