Drevet J G, Phelip X, Kern G, Stoebner P, Chirossel J P
Rev Rhum Mal Osteoartic. 1985 Jun;52(6):397-402.
Certain cases of mechanical back pain present unusual clinical and ultrasonographic features involving the posterior lumbar muscle groups, which can be used to distinguish various types. The clinical examination may isolate a juxta-vertebral territory in which pressure triggers or exacerbates the back pain; anaesthesia of this territory is accompanied by pain relief. Ultrasonography may reveal a hypoechogenic area in this muscle territory in which histomorphometric and ultrastructural studies, performed in three cases, revealed endomysial and perimysial adiposis associated with atrophy probably due to peripheral neuropathy.
某些机械性背痛病例呈现出涉及腰后肌群的不寻常临床和超声特征，这些特征可用于区分不同类型。临床检查可能会发现一个椎旁区域，在该区域施加压力会引发或加重背痛；对该区域进行麻醉后疼痛会缓解。超声检查可能会在该肌肉区域发现一个低回声区，在三例患者中进行的组织形态计量学和超微结构研究显示，该区域存在肌内膜和肌束膜脂肪增多，并伴有可能因周围神经病变导致的萎缩。
