Sacrum and coccyx

Pelvis, anterior view, 3D reconstruction (CT-scan). Image 1.  1, Iliac crest. 2, Lumbar vertebre. 3, Sacrum. 4, Ventral sacral foramen. 5, Coccyx. 6, Iliac wing. 7, Femoral neck (Left side). 8, Greater trochanter (fémur/right side).

Pelvis, posterior view, 3D reconstruction (CT-scan). Image 2.   1, Iliac wing. 2, Median crest of sacrum. 3, Lateral sacral crest. 4, Intermediate sacral crest. 5, Dorsal sacral foramen.

Sacrum, CT-scan, coronal oblique reconstruction. Image 3.   1, Geode (Lumbar vertebre). 2, Sacral ala. 3, Sacroiliac joint (Left side). 4, Ventral sacral foramen.

Sacrum, CT-scan, coronal oblique reconstruction. Image 4.   1, Lumbar vertebre. 2, Sacral canal. 3, Ventral sacral foramen.

Sacrum, CT-scan, axial reconstruction. Image 5  1, Iliac crest. 2, Sacroiliac joint (right side). 3, Dorsal sacral foramen. 4, Ventral sacral foramen.

Sacrum, CT-scan, axial reconstruction. Image 6.  1, Iliac crest. 2, Ventral sacral foramen. 3, Sacral canal. 4, Sacroiliac joint (Left side).

Sacrum, CT-scan, axial reconstruction. Image 7.  1, Ventral sacral foramen. 2, Dorsal sacral foramen.

Sacrum, CT-scan, sagittal reconstruction. Image 8.  1, Vertebral body (lumbar spine). 2, Intervertebral disc. 3, Sacral canal. 4, Median crest.

Sacrum, CT-scan, sagittal reconstruction. Image 9  1, Vertebral body S1. 2, Ventral sacral foramen. 3, Ventral sacral foramen. 4, Dorsal sacral foramen.

Sacrum, CT-scan, 3D reconstruction, anterior view. Image 10.  1, Ventral sacral foramen. 2, Lumbar vertebre. 3, Promontory. 4, Sacroiliac joint (Left side).

Sacrum, CT-scan, 3D reconstruction, superior and anterior view. Image 11.  1, Sacral ala. 2, Promontory. 3, Sacrococcygeal joint. 4, Transverse ridge.

Sacrum, reconstruction 3D (scanner), anterior and oblique view. Image 12 of 12.  1, Sacral ala. 2, Superior articular process, S1. 3, Sacroiliac joint. 4, Sacrococcygeal joint. 5, Coccyx. 6, Promontory.