A 12-year-old boy with a history of obesity presented with a 2-week history of limping and dull pain in the right hip. The symptoms had begun after he had slipped and fallen at school. On physical exam, active and passive ranges of motion of the right hip were limited by pain. Radiographs of the pelvis were performed (frog-leg lateral view is shown). What is the most likely diagnosis?
患者男，12岁，肥胖史，右髋部钝痛伴跛行2周。症状是在他在学校滑倒后开始的。体格检查显示，疼痛限制了右髋的主动和被动活动范围。我们进行了骨盆x线片检查(显示蛙腿侧位片)。最有可能的诊断是什么?
A. Chondrosarcoma 软骨肉瘤
B. Legg-Calve-Perthes disease
C. Osgood-Schlatter disease
D. Osteoarthritis 骨关节炎
E. Slipped capital femoral epiphysis 股骨头骨骺滑脱
答案解析：
正确答案是股骨头骨骺滑脱。这是青少年中最常见的髋关节疾病。当股骨近端发生前外侧和上方移位时，其外观就像一勺冰淇淋从蛋筒上滑落。这种情况与肥胖相关，但通常不发生在创伤之前，如该病例所发生的。
正确答案：E
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