Wound complications of closed sternal fracture are rare, but may have serious consequences if not effectively managed. We report a case of a patient who presented to the emergency department with a sternal abscess, osteomyelitis, and mediastinitis complicating a closed sternal fracture. It is hypothesised that in our patient bacteraemia post intravenous drug use resulted in seeding of the haematoma with Staphylococcus aureus. Early diagnosis and a multidisciplinary team effort were important in ensuring a favourable outcome.

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