Lumbar Strain / Back → Radiculopathy

Medical literature basis

Standard musculoskeletal and neurology literature supports the mechanism: disc herniation, foraminal stenosis, and degenerative spinal changes are the most common causes of lumbar radiculopathy. EMG/NCS findings, MRI correlation, and dermatomal distribution are the recognized objective markers.

Sample letter

[Provider Letterhead]

Date: [Date]

RE: VA Disability Claim — Secondary Service Connection
Veteran: [Name], DOB: [DOB]

To Whom It May Concern at the Department of Veterans Affairs:

I am Dr. [Name], M.D., board-certified in [neurology / physical medicine and rehabilitation / orthopedic surgery], licensed in [State], License #[Number]. I have evaluated and treated the veteran since [Date]. This letter addresses the relationship between the veteran's right/left lower extremity radiculopathy and the service-connected lumbar spine condition.

RECORDS REVIEWED

• Service treatment records, [Date range]
• VA treatment records, [Date range]
• Lumbar MRI dated [Date] showing [specific findings — disc herniation, foraminal stenosis, etc.]
• EMG / nerve conduction study dated [Date], if performed
• Physical examination findings on [Date]
• Prior VA rating decision dated [Date] granting service connection for lumbar strain at [%]

CURRENT DIAGNOSIS

The veteran is currently diagnosed with [right / left / bilateral] lower extremity radiculopathy in the [L4 / L5 / S1] dermatomal distribution, supported by [imaging / EMG] findings.

SERVICE CONNECTION THEORY

This opinion addresses whether the veteran's lower extremity radiculopathy is secondary to the service-connected lumbar spine condition under 38 CFR § 3.310.

MEDICAL OPINION

It is my medical opinion that the veteran's lower extremity radiculopathy is at least as likely as not caused by the service-connected lumbar spine condition.

MEDICAL RATIONALE

1. Anatomical basis. The veteran's lumbar MRI of [Date] documents [specific finding — e.g., L5-S1 disc herniation with right foraminal stenosis] that anatomically corresponds to the [L5 / S1] dermatomal distribution of the veteran's neurological symptoms.

2. Clinical correlation. The physical examination on [Date] documented [specific findings — diminished ankle jerk, dermatomal sensory loss, dorsiflexion weakness] consistent with the affected nerve root.

3. Objective testing. EMG/NCS dated [Date] confirmed [findings] in the [affected] nerve distribution. (If applicable.)

4. Timeline. The radiculopathy symptoms developed [X months/years] after the documented progression of the service-connected lumbar condition. The chronology aligns with the natural history of progressive nerve root compression.

5. Alternative causes considered. I evaluated alternative causes including peripheral neuropathy from systemic disease (diabetes, alcohol), independent peripheral nerve injury, and piriformis syndrome. The imaging and EMG findings localize the lesion to the lumbar nerve root, not a peripheral nerve.

Based on the foregoing, my opinion is that the veteran's lower extremity radiculopathy is at least as likely as not caused by the service-connected lumbar spine condition.

Respectfully submitted,

Dr. [Name], M.D.
Board-Certified [Specialty]
License #[Number], State of [State]
[Practice name, address, phone]

Key evidence to attach

• ✓Lumbar MRI showing nerve-root anatomic abnormality
• ✓EMG/NCS confirming radiculopathy in matching distribution (if performed)
• ✓Physical exam findings: dermatomal sensory loss, reflex changes, motor weakness
• ✓Documentation of dermatomal pain pattern consistent with imaging
• ✓Service-connection rating for the lumbar condition

Alternative causes the provider should address

A strong opinion explicitly rules out the obvious alternative explanations. Address each that applies to the veteran:

• ·Diabetes (rule out peripheral neuropathy as alternative)
• ·Other peripheral nerve injuries unrelated to lumbar spine
• ·Piriformis syndrome (mimics S1 radiculopathy)
• ·Vascular claudication (mimics neurogenic claudication)