- May 2, 2026The lumbar intertransversarii connect adjacent lumbar transverse processes and, like the rotatores, are thought to serve a primarily proprioceptive rather…
- May 2, 2026The lumbar interspinales are paired small muscles flanking the interspinous ligament between adjacent spinous processes. They contribute minimally to extension…
- May 2, 2026The psoas major is the only muscle connecting the lumbar spine to the lower limb, running from the lumbar vertebral…
- May 2, 2026The lumbar multifidus is the most important lumbar stabiliser, providing segmental control of each vertebral motion segment. It is the…
- May 2, 2026The psoas major is the primary hip flexor for everyday activities such as walking and stair climbing, arising from the…
- May 2, 2026The erector spinae is the primary extensor muscle mass of the spine, consisting of three longitudinal columns that fill the…
- May 2, 2026The serratus posterior inferior counteracts the tendency of the diaphragm to pull the lower ribs inward and upward during forceful…
- May 2, 2026The psoas minor is a vestigial muscle present in only approximately 60 percent of people, a small spindle-shaped muscle anterior…
- May 2, 2026The iliocostalis lumborum is the lumbar portion of the iliocostalis, forming the most lateral column of the erector spinae in…
- May 2, 2026The spinalis is the most medial column of the erector spinae, running from spinous process to spinous process and providing…