S

Sacral insufficiency fracture

Sacral fracture occurring under ordinary loads when bone strength is reduced.Lire cette fiche en françaisIn...

Sacralization of L5

Segmentation variant in which the last lumbar vertebra is partly or completely united with the...

Sacral plexus

Network formed mainly by L4–S4 contributions, distributing fibers to the pelvis and much of the...

Sacral slope

Angle between the upper sacral endplate and horizontal, used to describe sagittal sacral orientation.Lire cette...

Sacroiliac joint

Joint between the sacrum and ilium that transfers loads between the trunk and lower limbs.Lire...

Sacroiliitis

Inflammation of one or both sacroiliac joints, including in some inflammatory spinal disorders.Lire cette fiche...

Sacrospinous ligament

Ligament connecting the sacrum and coccyx to the ischial spine, contributing to sciatic foraminal boundaries...

Sacrotuberous ligament

Ligament connecting the sacral and coccygeal region to the ischial tuberosity and contributing to posterior...

Sacrum

Triangular bone at the base of the spine, formed by fused sacral vertebrae and connected...

Saddle anesthesia

Loss of sensation around the perineum and neighbouring areas. With spinal symptoms, it is a...