Pelvic Motion Anatomy and Stability Quiz

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Where is the most common site for problems related to bearing more weight than other vertebral levels?

L3-L4

L4-L5

L5-S1 (correct)

Lumbar region

Which vertebral level has an angle greater than others, making it at a greater risk of stress?

L5-S1 (correct)

L3-L4

S1-S2

L4-L5

What is the function of the pelvic ring in transferring forces from the spine to the lower extremities?

Supporting the thoracic spine

Stabilizing the lumbar region

Acting as a buffer to decrease forces to the upper body (correct)

Transferring forces through the upper extremities

What type of joint is the SIJ, being slightly movable at approximately 4-7 degrees?

Synovial joint Signup and view all the answers

What position represents the closed pack position for the SIJ?

Nutation Signup and view all the answers

What is the dominant pattern of leg pain according to the text?

Neurogenic intermittent claudication Signup and view all the answers

In low back pain, what does the centralization of pain refer to?

Retreat of pain towards the midline of the spine Signup and view all the answers

What does relief with extension indicate in cases of back pain?

Pressure relief through gapping Signup and view all the answers

What does 'Central stenosis' cause according to the text?

SI joint pain Signup and view all the answers

Which action would be typical for someone experiencing Gower’s sign?

Pushing up from thighs/surfaces Signup and view all the answers

What is the goal in cases of non-specific low back pain according to the text?

'Centralization' of pain Signup and view all the answers

Which muscle is primarily responsible for causing a posterior tilt of the pelvis?

Rectus abdominis Signup and view all the answers

In the context of pelvic stability, what role do ligaments play?

Act as passive restraints Signup and view all the answers

What mechanisms enable the pelvis to maintain stability?

Form and force closure Signup and view all the answers

Which muscle group/system helps actively stabilize the pelvic joints during gait?

Hamstrings Signup and view all the answers

What happens to the lumbar vertebrae during lateral flexion (side bend) to the ipsilateral side?

Inferior facets move inferiorly and posteriorly Signup and view all the answers

What restricts the movement of the lumbar spinous processes (SPs) during extension and inflection?

Facet capsules Signup and view all the answers

What is the main function of the lumbar spine anatomy discussed in the text?

Supporting the upper body Signup and view all the answers

Which structure in the lumbar spine anatomy carries the majority of the load?

Facet joints Signup and view all the answers

What is the main function of the ligamentum flavum in the lumbar spine anatomy?

Controlling extension movements Signup and view all the answers

How does the orientation of facet joints change in the lumbar spine anatomy?

From sagittal to frontal plane Signup and view all the answers

What is the function of the annulus fibrosis in the lumbar disc anatomy?

Absorb shock Signup and view all the answers

How is nutrition received by the lumbar disc in the vertebral body?

By diffusion through endplate Signup and view all the answers

What is a common characteristic of mechanical low back pain?

Pain is relieved by extension movements Signup and view all the answers

Which condition is often associated with neurogenic pain in the context of low back pain?

Inflammatory joint condition Signup and view all the answers

What is a characteristic feature of idiopathic low back pain?

May involve nonspecific causes like ligamentous involvement Signup and view all the answers

Which activity is typically easier for individuals with low back pain due to compression of nerve roots?

Flexing the spine Signup and view all the answers

What distinguishes mechanical low back pain from other types of low back pain?

Pain is relieved by changing positions Signup and view all the answers

Which condition is likely to be associated with mechanical low back pain that refers pain to the buttocks and thighs?

Spondylolisthesis Signup and view all the answers