Back Pain Essentials Of Back Pain 3

Question 1

A 70-year-old reports leg pain when walking that is relieved by sitting or leaning forward on a shopping cart. What is the most likely diagnosis?

Accepted Answer

Lumbar spinal stenosis

Answer

Neurogenic claudication relieved by flexion is the hallmark presentation of lumbar spinal stenosis.

Question 2

Which vertebral level is the most common site of lumbar disc herniation?

Accepted Answer

L4-L5

Answer

The L4-L5 level bears the greatest mechanical load and is the most frequent site of disc herniation along with L5-S1.

Question 3

Which of the following medications is recommended as a first-line pharmacologic option for acute low back pain?

Accepted Answer

NSAIDs such as ibuprofen

Answer

NSAIDs are first-line for acute low back pain, while opioids and systemic steroids are not recommended initially.

Question 4

Weakness in great toe extension during a back pain exam most suggests involvement of which nerve root?

Accepted Answer

L5

Answer

The L5 nerve root innervates the extensor hallucis longus, so its compression weakens great toe extension.

Question 5

A construction worker lifts a heavy box by bending at the waist with straight legs and feels sudden low back pain. Which lifting error most contributed?

Accepted Answer

Flexing the spine instead of the hips and knees

Answer

Lifting with a flexed spine rather than bending the hips and knees dramatically increases stress on lumbar discs.

Back Pain Practice Test

Back Pain Practice Test

Back Pain Essentials Of Back Pain 3