Numerous mechanical and pathologic variables contribute to sacroiliac joint (SIJ) pain. The oncologic population has additional considerations, including tumor burden causing fracture, nerve compression, joint instability, and periosteal inflammation. Post‐treatment changes may also restrict joint mobility, causing transitional pain. Currently, fluoroscopically guided SIJ injections, aimed at the inferior one third of the SIJ, are the gold standard for treatment but have only been described in the nononcologic population. Ultrasound (US) guidance may confer several benefits, including positioning, ease of procedure, lower costs, and, importantly, guidance to avoid neovascularization, metastatic disease, and other soft tissue structures.

中文翻译：

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超声引导下下和关节内/周围上骶髂关节注射方法治疗转移相关的后骨盆骨疼痛。

许多机械和病理变量导致骶髂关节 (SIJ) 疼痛。肿瘤人群还有其他考虑因素，包括导致骨折的肿瘤负荷、神经压迫、关节不稳定和骨膜炎症。治疗后的变化也可能限制关节活动度，导致过渡性疼痛。目前，针对 SIJ 下三分之一的透视引导 SIJ 注射是治疗的金标准，但仅在非肿瘤人群中进行了描述。超声 (US) 引导可能带来多种好处，包括定位、操作简便、成本更低，以及重要的是，引导可避免新血管形成、转移性疾病和其他软组织结构。