You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is 16 yr old, obese female presented with history of bilateral hip pain from a long duration. Endocrinology tests show hypothyroidism. She has a painful limping gait. Which of the following investigation is of no use in diagnosis of this condition? and explain in detail?
History given is suggestive of SCFE( Slipped capital femoral epiphysis). X-Ray showsa Trethowan's sign CT is used for Acute/Chronic slip MRI is IOC. USG has no role in diagnosing this condition.