病人　女性 ,2 8岁。右第二趾关节肿胀 8年 ,起初无不适 ,近 3个月比较增大 ,伴酸痛运动受限。体检 :心肺正常。右第二趾关节背外侧明显隆凸 ,触及包块约 1.2 cm× 1.0 cm大小 ,质硬 ,固定 ,无明显压痛 ,皮肤正常 ,但伸屈受限。化验无异常。1　X线表现右第二趾关节偏外侧 Patient female, 2 8 years old. The right second toe joint swelling for 8 years, initially without discomfort, increased in the past 3 months, with sore movement limited. Physical examination: normal heart and lung. Right second toe joint dorsal lateral obvious bulge, touching the mass of about 1.2 cm × 1.0 cm size, hard, fixed, no significant tenderness, the skin is normal, but limited flexion and extension. No abnormal test. 1 X-ray performance of the second right toe joints outside the right side