Lumbar Spine 220

These flashcards cover key concepts related to the lumbar spine and low back pain, focusing on definitions and functions of relevant muscles and conditions.

Lumbar Spine

The lower part of the vertebral column

5

number of lumbar vertebrae

Low Back Pain (LBP)

A common condition affecting 80% of the general population

common cold

LBP is second to this for most doctor visits in the U.S.

LBP

most expensive work related engery

Low Back Pain (LBP)

usually involves discomfort in the lumbar region.

Lumbago

Another term for low back pain.

facet joints

protect the motion segment from anterior shear forces, excessive rotation, and flexion

Spondylosis

Age-related degeneration of the spine, which may or may not cause pain.

Transverse Abdominis

A deep abdominal muscle responsible for abdominal compression.

Rectus Abdominis

The muscle that helps with trunk flexion

Diastasis Recti

A condition where the linea alba splits, often occurring during pregnancy.

Internal Obliques

Muscles that assist with trunk flexion, lateral bending, and rotation on the same side.

External Obliques

Muscles that assist with trunk flexion and rotate to the opposite side.

Quadratus Lumborum

A muscle that assists with lateral bending and is involved in hip height motion.

Anterior longitudinal ligament

Extends from the sacrum along the anterior aspect of the entire spinal column

Anterior longitudinal ligament

becoming thinner as it ascends

posterior longitudinal ligament

Found throughout the spinal column, where it covers the posterior aspect of the centrum and IVD

Ligamentum flavum

connects two consecutive laminae

interspinous ligament

connects 2 consecutive spinous processes

supraspinous ligament

connects 2 adjacent spinous processses

iliolumbar ligament

restrain flexion, extension, axial rotation, and side bending of L-5 on
S-1

L5, S1

what two vertebrae does iliolumbar ligament restrict movement on

Pseudo ligaments

tertransverse, transforaminal, and mamillo-accessory

Pseudo ligaments

resemble the membranous part of the fascial system separating paravertebral compartments

Pseudo ligaments

do not have any mechanical functions

Quadratus lumborum

important because it is a spine stabilizer

lumbar multifidi

important because it provides segmental stiffness and control motion

erector spinae 

consisting of iliocostalis lumborum and thoracic longissimus

thoracolumbar fascia

assists in transmission of extension forces during lifting

thoracolumbar fascia

stabilizes spine against anterior shear, flexion forces

outer half IVD

innervated by sinnuvertebral nerve and gray rami communicants

lower segmental levels

where most flexion, extension occur

mid lumbar area

where most side bending occurs

lumbosacral junction

where most rotaion occurs