患者,男,4岁,主因左腕部活动受限、畸形并拇指缺如4 a就诊。体查:心肺腹未见明显病理性体征,脊柱生理弯曲存在,活动正常,右上肢、双下肢活动正常,骨骼发育正常,左肩关节活动正常,尺骨鹰嘴至尺骨茎突测量左前臂较右前臂缩短4cm,肘关节下10 cm左前臂周径10 cm,右前臂周径14 cm,左 Patients, male, 4 years old, mainly due to limited activity of the left wrist, deformity and lack of thumb as 4 a treatment. Physical examination: no obvious pathological signs of cardiopulmonary abdomen, spine physiological bending exists, normal activities, right upper limb, both lower extremities normal, normal skeletal development, left shoulder joint activity, ulnar olecranon to the ulna styloid measurement of the left forearm than the right forearm Shortened 4cm, elbow 10cm left forearm circumference 10cm, right forearm circumference 14cm, left