Diseases

Sacroiliac

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The sacroiliac (ISG) or also sacral iliac joint connects the lower spine with the pelvis. This connection is held by tight ligaments and is very little mobile, but can be postponed by bad postures or injuries. Even minimal shifts can lead to pain. Read everything important about the sacroiliac joint!

ArtikelübersichtIliosakralgelenk

  • What is the sacroiliac joint?
  • What is the function of the sacroiliac joint?
  • Where is the sacroiliac joint located?
  • What problems can the sacroiliac joint cause?

What is the sacroiliac joint?

The sacroiliac joint (ISG) is the articulated but almost immobile connection between the lower spine (sacrum) and the two ilium (ilium). So there are two iliosacral joints in the body. The bony articular surfaces are covered with a cartilaginous layer. Strong, tight band connections allow only minimal tilting or sideways movement, but they are important for regulating the width of the pelvis, especially at birth. During pregnancy, therefore, the ligaments (as well as the symphysis = pubic symphysis) loosen by the hormonal change to allow the passage of the baby's head at birth.

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What is the function of the sacroiliac joint?

The sacrum as the lower part of the spine has to transfer the weight of the trunk to the two hip legs and on to the legs - the price of the upright gait. However, in order to be able to hold the hull load and not tilt forward into the pelvis, the articulated connection between the sacrum and the two intestines - the sacroiliac joint - must be well fixed, which is ensured by strong, tight ligaments. From the sacrum several such ligaments pull to the intestine and seat legs. These wristbands are reinforced by several smaller bands. The sacrum and the hip legs form a vaulted arch, through which the hull load is transferred to the legs. When walking, there are alternating tiny movements in the two sacroiliac joints. The tight bands limit the range of motion.

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