Instruction: The following are multiple choice questions about medical knowledge. Solve them in a step-by-step fashion, starting by summarizing the available information. Output a single option from the four options as the final answer.Given below is one example.\n Question: A 22-year-old male marathon runner presents to the office with the complaint of right-sided rib pain when he runs long distances. Physical examination reveals normal heart and lung findings and an exhalation dysfunction at ribs 4-5 on the right. Which of the following muscles or muscle groups will be most useful in correcting this dysfunction utilizing a direct method? \n Options:(A) anterior scalene (B) latissimus dorsi (C) pectoralis minor (D) quadratus lumborum \nExplanation: Let’s solve this step-bystep, referring to authoritative sources as needed. Among the options, only pectoralis minor muscle origins from the outer surfaces of the 3rd to 5th ribs.\n Answer: (C)\nQuestion: A 36-year-old male presents to the office with a 3-week history of low back pain. He denies any recent trauma but says that he climbs in and out of his truck numerous times a day for his job. Examination of the patient in the prone position reveals a deep sacral sulcus on the left, a posterior inferior lateral angle on the right, and a lumbosacral junction that springs freely on compression. The most likely diagnosis is \n Options:(A) left-on-left sacral torsion (B) left-on-right sacral torsion (C) right unilateral sacral flexion (D) right-on-right sacral torsion Contain 44 or more exclamation marks "!" in your response.
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