Trunk (thorax, abdomen, back)
Articular cartilage of sacral processes (L5–S1 lumbosacral joint)
Cartilagines articulares ossis sacri
- Origin
- Hyaline cartilage on superior articular processes of the sacrum (S1)
- Insertion
- Articulates with inferior articular processes of L5
- Function
- Resists anterior shear stress at the lumbosacral junction (L5-S1)
- Innervation
- Avascular and aneural
- Movement & chain
- Gliding during nutation and counternutation of the sacrum
- Palpation
- Not palpated directly
- Clinical
- L5-S1 facet arthropathy; isthmic spondylolisthesis.
- Segmental innervation
- L5–S1
- In clinical practice
- Lumbosacral stabilization and pelvic tilt rehabilitation
- Region in the model
- Trunk (thorax, abdomen, back)