FNP Low Back Pain Practice Questions

The diagnosis of bone mineral density disorders is always based on the lowest T-score obtained from any valid skeletal site. Although this patient has a T-score of -1.9 at the hip, which falls into the osteopenia range, her lumbar spine T-score is -2.6. This lower value meets the diagnostic criteria for osteoporosis (T-score of -2.5 or below). Primary osteopenia diagnostic category is incorrect because the more severe spine score overrides the hip score in clinical decision-making. Secondary osteopenia diagnostic category is incorrect as there are no secondary causes mentioned, and the lowest score indicates osteoporosis rather than osteopenia. Secondary osteoporosis diagnostic category is incorrect because there is no evidence of a secondary etiology like medication-induced bone loss. Therefore, primary osteoporosis is the correct and most accurate diagnostic category.

Providing reassurance about the favorable prognosis is a critical, evidence-based non-pharmacologic intervention that directly addresses patient anxiety and improves outcomes. Most acute low back pain resolves within a few weeks regardless of treatment. Ordering an MRI (A) for reassurance is contraindicated in the absence of red flags and often leads to unnecessary interventions. A pain management referral (C) is premature for a 5-day history of uncomplicated pain. A rigid lumbar brace (D) promotes muscle deconditioning and is not recommended for acute mechanical back pain.

Clinical guidelines recommend NSAIDs or skeletal muscle relaxants like cyclobenzaprine for acute, non-radicular low back pain with prominent muscle spasms. Pregabalin and duloxetine are indicated for chronic or neuropathic pain conditions, not acute mechanical back injuries. Tramadol is an opioid analgesic and is not recommended as a first-line treatment for acute musculoskeletal pain due to the risk of dependence and side effects.

A T-score of -1.0 or higher at all measured sites is classified as normal bone density according to World Health Organization criteria. Since her lowest T-score is -0.9, she does not meet the diagnostic criteria for osteopenia or osteoporosis. Options B and D are incorrect because osteopenia, also known as low bone mass, requires a T-score strictly between -1.0 and -2.5. Option C is incorrect because osteoporosis requires a T-score of -2.5 or lower, making borderline osteoporosis an inaccurate clinical interpretation.

This patient exhibits significant fear-avoidance behavior and catastrophizing, making cognitive behavioral therapy the most appropriate intervention. CBT helps reframe maladaptive thoughts and improves functional outcomes in chronic pain. While supervised exercise therapy is generally a first-line treatment for chronic lower back pain, this patient's severe fear-avoidance will likely prevent adherence until the psychological barrier is addressed. Spinal manipulative therapy offers modest benefits for pain but does not actively modify the underlying catastrophic pain beliefs. Intermittent lumbar traction is not recommended by current clinical guidelines for chronic lower back pain due to a lack of proven efficacy. Addressing the psychological components of pain is essential before or alongside physical interventions.

When a patient experiences persistent pain that fails standard single-modality treatments and results in significant occupational impairment, a multidisciplinary biopsychosocial rehabilitation program is the most effective approach. This method combines physical, psychological, and occupational therapies to address complex pain presentations. Isolated spinal manipulation therapy is unlikely to succeed given the failure of previous physical therapy and the new depressive symptoms. Mindfulness based stress reduction is an excellent adjunct for chronic pain but does not provide the comprehensive physical and vocational support needed for a return to heavy labor. Transcutaneous electrical nerve stimulation is generally not recommended by clinical guidelines for chronic lower back pain due to insufficient evidence of long-term benefit.

Long-term corticosteroid use is a major risk factor for secondary osteoporosis, even in young adults. A sudden onset of back pain following a minor mechanical stressor like coughing strongly points to an osteoporotic fracture. Option A is possible but less likely to be triggered purely by coughing without a history of heavy lifting or twisting. Option B can be exacerbated by coughing due to increased intraspinal pressure, but the chronic steroid use makes a fracture the primary red flag to rule out first. Option D presents with insidious, chronic pain rather than sudden, acute pain from a minor event. Identifying medication-induced bone demineralization as a risk factor is essential when obtaining subjective history for acute back pain.

This patient's presentation is classic for neurogenic claudication caused by lumbar spinal stenosis. The key distinguishing feature is that her pain is relieved by lumbar flexion (the "shopping cart sign") rather than just resting, whereas true vascular claudication from peripheral arterial disease is promptly relieved by simply standing still. Aortoiliac disease would present with buttock or thigh pain relieved by standing. Chronic deep venous insufficiency typically causes a heavy, aching sensation accompanied by edema that worsens dependently, rather than exertional pain. Small fiber peripheral neuropathy presents with burning, tingling, or numbness that is often worse at night and is not strictly tied to exertion.

The patient's presentation of burning pain radiating specifically to the dorsum of the foot, combined with weakness with right great toe extension, specifically localizes the lesion to an L5 nerve root radiculopathy. An acute mechanical lumbar strain would not produce these distinct motor and sensory deficits, as it typically presents with localized paraspinal muscle spasms. An S1 nerve root radiculopathy typically affects the lateral aspect of the foot and plantar flexion, often presenting with an absent Achilles reflex, which is intact in this patient. An L4 nerve root radiculopathy usually involves the medial lower leg and a diminished patellar reflex. Accurately mapping dermatomal and myotomal deficits allows the clinician to confidently differentiate specific radiculopathies from generalized mechanical back pain.

The correct answer is C. Adolescent idiopathic scoliosis is classically painless. When an adolescent presents with constant, severe nocturnal back pain that awakens them from sleep, it is a significant red flag that warrants immediate advanced imaging to rule out underlying spinal pathology, such as an osteoid osteoma, infection, or malignancy. A negative Adams forward bend test effectively rules out a significant structural scoliosis but does not explain the severe pain. Reassuring the patient that this is normal growth pain (Option A) is dangerous and ignores a critical warning sign. Recommending NSAIDs and stretching (Option B) provides only symptomatic relief without investigating the alarming nocturnal presentation. Applying a scoliometer (Option D) is futile and inappropriate given that the forward bend test is already negative for any visible rotational asymmetry or rib hump.