A 10-year-old obese boy was referred to the emergency with a history of hip pain. He was observed to be limping and complained of severe pain. Which of the following investigation is not required:

Order of Investigations in any inflammatory Joint Swelling X-ray | MRI | Aspiration This patient is an Obese limping child with hip pain, the possible differential diagnosis would be : Osteomyelitis (X-MAS) Septic ahritis (X-MAS) Slipped capital femoral epiphysis (X-MRI) Transient synovitis (X-MAS) Hence CT will be least preferred.