目的 探讨超声在X线检查阴性的闭合性胸壁损伤中的应用价值。方法 对22例X线检查阴性的闭合性胸壁损伤患者 进行胸壁疼痛部位超声检查，观察皮下软组织及各肋骨的情况。结果 4.5%(1/22)出现两处肋骨骨折，4.5%(1/22) 出现肋软骨骨折，64.3%(14/22)肋骨可见不同部位的单处青枝骨折并骨膜下血肿，13.6%(3/22)出现皮下脂肪层挫 伤，9.1%(2/22)存在肋骨骨膜节段性增厚，4.5%(1/22)出现筋膜层局部撕裂。结论 超声可有效弥补X线检查的不 足，尤其适用于X线不能显示的轻微骨折、肋软骨骨折以及软组织挫伤。

Objective To discuss the value of ultrasonography in X-ray negative patient with closed chest wall injury. Methods Ultrasound was performed in 22 patients with closed chest wall injury who had negative findings by X-ray examination.The subcutaneous soft tissue and ribs were observed. Results 4.5%(1/22) had two rib fractures, 4.5% (1/22) had costal cartilage fracture.64.3% (14/22) of the patients had single rib brunch fracture with subperiosteal hematoma at different sites. 13.6%(3/22) had subcutaneous fat layer contusion.9.1%(2/22) had thicken segmental costal periosteal. 4.5%(1/22) had local tearing in fascia. Conclusion Ultrasound can effectively remedy the deficiency of X-ray examination, especially for minor fracture, costal cartilage fracture and soft tissue contusion which X-ray can not show