TCH6210: PELVIS Lecture Notes

Flashcards covering key concepts from the TCH6210 PELVIS lecture, focusing on sacroiliac joints, anatomy, motion, clinical considerations, and diagnostics.

What are the sacroiliac joints primarily classified as?

True synovial joints.

What type of cartilage primarily covers the sacral facet in the sacroiliac joint?

Mostly hyaline cartilage.

What is the significance of the sacrum in the body?

It acts as a keystone in an arch providing support during weight bearing.

What happens to the joint surface of the sacroiliac joint after 60 years?

It roughens.

During gait, how do the sacroiliac joints absorb forces?

They absorb compressive forces and transfer loads from the axial skeleton to the lower extremities.

How many joints are part of the lumbopelvic complex?

Five joints: 2 SI joints, 2 posterior facet joints, and 1 IVD.

What is the primary function of the sacroiliac joint?

To allow for small amounts of motion primarily during walking.

What occurs during hip flexion in relation to the ilium?

Ilium experiences posterior rotation.

What does PI refer to in ilium malpositions?

Posterior Inferior.

How does the ilium move in an extension restriction?

It is stuck or fixed in extension.

What is indicated by leg length inequality in relation to the ilium?

Short leg associated with PI ilium and long leg associated with AS ilium.

What does AS refer to in ilium malpositions?

Anterior Superior.

What is the role of pelvic muscles in sacrum alignment?

Tight or weak pelvic muscles can cause misalignment of the ilium or sacrum.

What types of testing are used to analyze sacroiliac joint motion?

Motion palpation, static palpation, postural analysis, and physical indicators.

What are reciprocal motions during gait associated with?

Between the same side ilium and sacrum, and between right and left sacral alae.

What does a decrease in lumbar lordosis indicate regarding sacral position?

It is associated with counter-nutation of the sacrum.

Which motion is being tested if contacting the left sacral apex and springing?

Rotation around the left oblique axis.

What does SI motion primarily consist of?

Small amounts of motion understood through hip movements.

What is the primary movement of the sacroiliac joint?

Primarily secondary (passive) motion.

How is sacral malposition expressed using reference points?

AI refers to anterior inferior and PS refers to posterior superior.

What are the clinical considerations of the sacroiliac joint?

Analysis can be complex; malpositions may need adjustments.

What does the term 'stuck or fixed in extension' describe?

It describes an extension malposition of the ilium.

What is the effect of tight hamstrings on sacral alignment?

They can lead to PI ilium malposition.

What creates the kinematic link between the lower extremity and spine?

The sacroiliac joints along with the lumbopelvic complex.

During a Gillet’s Test, what is tested?

Flexion and extension of the SI joint.

What position association is linked with the AS ilium?

Extension malposition.

Which answer option is correct when contacting the left PSIS?

It is associated with creating unilateral hip flexion.

What do clinicians look for in assessing sacroiliac joint issues?

Swelling, trauma, and restricted motion on the opposite side.

What is a common misalignment pattern in the pelvis?

The ilium and/or sacrum can lock in a malposition.

What are the total degrees of motion in the sacroiliac joint?

The total motion is very small.