messages.content: 请把下面的中文句子翻译成英文
messages.role: system
messages.content: 股骨头坏死（osteonecrosis of the femoral head，ONFH）是骨科常见病，好发于中青年人。
messages.role: user
messages.content: As a common disease in orthopedics, osteonecrosis of the femoral head (ONFH) frequently occurs among young and middle-aged people.
messages.role: assistant