Pain caused by the sacroiliac joint (SIG) makes up a relevant proportion of lumbar back pain and can have a variety of specific and non-specific causes. The SIG represents the central link between the spine and the lower extremity. It is characterized by high stability and low mobility. There are significant inter-individual differences. In addition to the possibility of asymptomatic situations, SIG dysfunction can trigger pain in the lower back with possible radiation to the lower extremity. In addition to a structured medical history, clinical examination requires an examination of the adjacent joints and the neurological status. More specifically, movement and provocation tests as well as infiltrations are carried out. General information and conservative therapeutic methods represent the first-line therapies. Interventional and surgical procedures can help in the case of chronification.

中文翻译：

---

Iliosakralgelenk 和 Schmerz

骶髂关节 (SIG) 引起的疼痛占腰背痛的相关比例，并且可能有多种特定和非特定原因。SIG 代表脊柱和下肢之间的中心链接。它的特点是高稳定性和低流动性。存在显着的个体差异。除了无症状情况的可能性之外，SIG 功能障碍还可能引发下背部疼痛，并可能辐射到下肢。除了结构化的病史外，临床检查还需要检查相邻关节和神经系统状态。更具体地说，执行移动和挑衅测试以及渗透。一般信息和保守治疗方法代表一线治疗。