Cervical Radiculopathy: Electrodiagnostic Evaluation and Differential Diagnosis

The Clinical & Business Connection Newsletter

Clinical Insight

Cervical radiculopathy is one of the most common causes of arm pain and paresthesia seen in primary care and neurology. The condition results from compression or irritation of a cervical nerve root, most commonly at C6 or C7 due to disc herniation, spondylosis, or foraminal stenosis. The clinical picture overlaps significantly with peripheral entrapment neuropathies, rotator cuff pathology, thoracic outlet syndrome, and brachial plexopathy, making electrodiagnostic testing a critical tool for differential diagnosis.

What EMG/NCS Adds

Nerve conduction studies provide objective data on sensory and motor nerve function. In cervical radiculopathy, NCS findings are typically normal because the compression is proximal to the dorsal root ganglion, which is a key distinguishing feature from peripheral neuropathies, where NCS are abnormal. EMG is the primary electrodiagnostic tool for identifying radiculopathy: denervation potentials (fibrillations, positive sharp waves) and reduced motor unit recruitment in a myotomal distribution confirm root-level pathology and distinguish radiculopathy from plexopathy and mononeuropathy.

Key Differentials

• Carpal tunnel syndrome: abnormal median sensory NCS; EMG limited to thenar musculature — no paraspinal involvement
• Ulnar neuropathy at the elbow: abnormal ulnar NCS; denervation limited to ulnar territory without myotomal pattern
• Brachial plexopathy: abnormal sensory NCS (unlike radiculopathy); multi-root pattern without paraspinal changes
• Peripheral polyneuropathy: length-dependent, symmetric, bilateral — not myotomal or level-specific

Refer for electrodiagnostic evaluation when arm or hand symptoms persist beyond 4–6 weeks of conservative management, when the diagnosis is unclear, when surgical planning requires objective nerve root severity data, or when radiculopathy and superimposed entrapment neuropathy need to be distinguished.

References

1. Kuhlman KA, Hennessey WJ. Sensitivity and specificity of carpal tunnel syndrome signs. Am J Phys Med Rehabil. 1997.
2. Levin KH. Electrodiagnostic approach to the patient with suspected radiculopathy. Neurol Clin. 2002.
3. AANEM. Recommended policy for electrodiagnostic medicine. Muscle Nerve. 1999.

Business Success Strategy

Expand Your Practice Revenue Through Collaborative Diagnostic Opportunities with Hands-On EMG

For physicians looking to enhance the quality and comprehensiveness of care they offer, while also creating meaningful revenue opportunities — a collaborative relationship with Hands-On EMG Testing is worth a closer look.

Our Medical Diagnostic Model is designed to integrate seamlessly into existing practices of all types and sizes. Whether you are a solo practitioner, a group practice, or a multi-specialty clinic, we offer structured collaboration models that bring advanced electrodiagnostic and musculoskeletal ultrasound testing directly to your patients, with the operational infrastructure, billing support, and clinical oversight already in place.

What Collaboration Looks Like

• In-office diagnostic testing: Hands-On EMG clinicians can perform EMG/NCS and MSKUS testing at your location, increasing convenience for your patients and revenue potential for your practice
• Rapid turnaround: Appointments scheduled within 24 hours of referral; detailed reports returned within 48 hours via a secure provider portal
• Full billing and administrative support: Our team manages the billing cycle, freeing your staff from administrative burden
• Patient retention: When diagnostic services are offered in your practice, patients return to you for follow-up, keeping care coordination intact and referral patterns strong

Our accreditations, ACEWM Accredited Electrodiagnostic Laboratory with Exemplary Status and HODS Approved Diagnostic Center, ensure that every test performed meets the highest standards of clinical quality and payer compliance.

To explore how the Hands-On EMG Diagnostic Model could work within your practice, contact Dr. Dimitrios Kostopoulos directly at di**@********mg.com, or reach our team at +1 (855) 364-8378.

Spotlight on Excellence

Bibi Razack

Scheduling and Communications Officer

Bibi has been in healthcare management for the past 10 years, where she was primarily responsible for the administration, coordination, and oversight of the facility.

Updates You Should Know

The Introduction to EMG, Nerve Conduction Studies, and Musculoskeletal Ultrasound Imaging course just wrapped — and it was a phenomenal success.

This quarter, Hands-On EMG Testing hosted the American Academy of Clinical Electrodiagnosis (AACE) and the American Academy of MSK Ultrasound (AAMU) for the Introduction to EMG, Nerve Conduction Studies, and Musculoskeletal Ultrasound Imaging with 40+ clinicians gathering for two days of intensive, hands-on training.

Attendees left with:

• Real-world skills in EMG, nerve conduction studies, and MSK ultrasound imaging
• The clinical context needed to make more confident, accurate referrals
• 20.5 CEUs (physical therapy professionals) or 20.5 CMEs (physicians and medical providers)
• A direct connection to the HODS Leadership Team, who works personally with your admin and marketing staff to tailor strategies for your practice and market

The energy in the room was electric — and the demand is only growing!

Want in on the next one? For all upcoming dates and locations please visit emgintro.com.

How We Can Help

Hands-On EMG Testing serves physicians and patients across several locations in Manhattan, Queens, the Bronx, Brooklyn, and Long Island.

To refer a patient, please use our online referral form. To learn more about our services, email in**@********mg.com, or call +1 (855) 248-4021.

If you are interested in incorporating our Medical Diagnostic Model into your practice to provide immediate testing results and create a strong business opportunity, please contact Dr. Dimitrios Kostopoulos at di**@********mg.com.