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An amphiarthrosis (from the Greek amphi - "around", "around" and arthros - "joint") or tight joint is a diarthrosis ("real joint ") with restricted mobility due to tight ligaments . The joint space can be seen in the X-ray . As with all joints, the joint surfaces are covered by hyaline cartilage . The range of motion in amphiarthrosis is relatively small.

One example is the sacro-iliac joint ( articulatio sacroiliaca ), ie the connection between the basin , especially the iliac ( ilium ), and the spinal column , especially the sacrum ( sacrum ). The proximal joint between the tibia and fibula is also an example. The joints between the wrist and tarsal bones are also amphiarthroses .