骶髂关节是位于脊柱底部联接骶骨和骨盆的关节。由中央的骶骨和两侧的髂骨耳状关节面相对而构成。正常骶髂关节连接紧密，活动范围极小。妊娠后期因体内激素水平的变化，使韧带松弛，骶髂关节活动度增大，便于分娩。因外伤或炎症等因素导致骶髂关节活动异常，产生局部疼痛或向臀部或下肢放射，称为骶髂关节功能紊乱。
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Sacroiliac joint dysfunction is improper movement of the joints at the bottom of the spine that connect the sacrum to the pelvis. It can result in pain in the low back and legs, or inflammation of the joints known as sacroiliitis.
骶髂关节是位于脊柱底部联接骶骨和骨盆的关节，当其产生不恰当的活动，即称为骶髂关节功能紊乱，可引起腰痛和腿痛，或者关节的炎症，即所谓的骶髂关节炎。
The sacrum is a triangular bone at the bottom of the spine, below the lumbar region of the spine and above the tailbone. It consists of five fused vertebral segments. The sacrum is connected to the pelvic bone, also known as the iliac crest, on the right and left sides at the sacroiliac joints. These joints act as shock-absorbing structures and typically only move a small amount.
骶骨是位于脊柱底部的一块三角形骨头，位于腰椎下方，尾椎上方，它包含5节融合在一起的椎体。骶骨通过左右两侧的骶髂关节与盆骨（髂骨）相连。骶髂关节在结构上有吸收震荡的作用，正常情况下只有少许的活动。
Sacroiliac joint dysfunction refers to pain in these joints when they move either too much or too little. Hypermobility, or too much movement in the sacroiliac joints, is a result of loose ligaments supporting the joints. Hypermobility has many causes, including pregnancy or injury to ligaments.
骶髂关节功能紊乱是指由于它们活动过多或过少而引起的疼痛。活动过度，即骶髂关节运动太多，是支持关节的韧带松弛造成的。活动过度有许多原因，包括妊娠及韧带损伤。
Hypomobility, or too little movement in the joint, can be caused by degenerative joint diseases such as arthritis. Show arthritic changes to SI joint. When the sacroiliac joints overcompensate for problems in nearby joints, they may become painful. For example, many lumbar spinal fusion patients have sacroiliac joint pain due to reduced motion in lumbar spine segments.
活动度减少，即骶髂关节活动太少，可因退变性关节病变造成，比如关节炎。看看关节炎对骶髂关节的影响。当骶髂关节对周围关节病变代偿过度，会导致疼痛。例如，许多腰椎融合病人会出现骶髂关节疼痛，因为腰椎节段的活动减少。
Sacroiliac joint pain usually manifests as pain in the lower back or buttocks, but pain can spread to surrounding muscles that may spasm in response to joint dysfunction.
骶髂关节疼痛通常表现为腰部和臀部的疼痛，但疼痛也可以波及周围肌肉，因为骶髂关节功能紊乱会引起这些肌肉反应性痉挛。
Sacroiliac joint dysfunction is a condition that is may be misdiagnosed as a herniated disc, so it is important to be aware of the specific symptoms associated with sacroiliac joint pain.
骶髂关节功能紊乱可能被误诊为椎间盘突出。因此注意与骶髂关节痛相关的特殊的症状是很重要的。
(胡佰文 译)
