Subacute acetabular osteomyelitis is uncommon and often misdiagnosed due to ill-defined symptomology and indolent disease course. An afebrile 11-year-old boy re-presented with 4 weeks atraumatic limp and increasingly severe right hip pain previously believed to be transient synovitis. Examination revealed hip tenderness and reduced mobility. https://www.lightemupsequences.com/