How Car Accidents Cause Nerve Damage
Nerves can be injured in a car accident through several mechanisms:
- Compression: A herniated disc pressing on a spinal nerve root (radiculopathy) — the most common nerve injury from car accidents
- Stretching/Traction: Sudden forces stretching nerves beyond their limit, as in brachial plexus injuries from side-impact collisions
- Direct trauma: Fracture fragments, crush injuries, or penetrating trauma directly damaging nerve fibers
- Inflammation: Post-traumatic swelling compressing nerves within tight anatomical spaces (like carpal tunnel)
Symptoms of Nerve Damage
Nerve injury symptoms depend on which nerves are affected and the type of damage:
- Sensory symptoms: Numbness, tingling ("pins and needles"), burning or electric pain, hypersensitivity to touch
- Motor symptoms: Weakness, difficulty gripping, foot drop, loss of fine motor control
- Distribution pattern: Symptoms follow the territory of the damaged nerve — for example, a C6 nerve root compression causes numbness in the thumb and index finger
Importantly, nerve damage symptoms may develop gradually over days or weeks after the accident as inflammation builds. This makes early neurological evaluation critical.
Diagnosing Nerve Damage: NCV/EMG Testing
NCV/EMG (Nerve Conduction Velocity / Electromyography) is the gold standard for objectively measuring nerve damage. This two-part test:
- NCV (Nerve Conduction Velocity): Measures how fast electrical signals travel along your nerves. Slow conduction indicates damage or compression.
- EMG (Electromyography): Measures electrical activity in muscles at rest and during contraction. Abnormal patterns indicate denervation — muscle fibers losing their nerve supply.
NCV/EMG results provide objective, measurable evidence of nerve damage that cannot be disputed. This is critical for personal injury claims where insurance companies may question subjective pain complaints.
MAIC performs all NCV/EMG testing on-site, with results interpreted by our board-certified neurologist.
Common Nerve Injuries from Car Accidents
- Cervical radiculopathy: Compressed nerve roots in the neck causing arm pain, numbness, and weakness. Usually from herniated discs at C5-C6 or C6-C7.
- Lumbar radiculopathy (sciatica): Compressed nerve roots in the lower back causing leg pain — classically shooting from the buttock down the back of the leg.
- Brachial plexus injury: Stretching of the network of nerves from the neck to the arm, causing shoulder and arm weakness.
- Carpal tunnel syndrome: Wrist impact or fracture compressing the median nerve, causing hand numbness and weakness.
- Peroneal nerve injury: Knee impact damaging the nerve on the outside of the knee, causing foot drop.
Treatment Options for Nerve Damage
Treatment depends on the type and severity of nerve injury:
- Pain management: Pain management doctors prescribe neuropathic pain medications, nerve blocks, and epidural steroid injections to reduce inflammation and pain.
- Physical therapy: Nerve gliding exercises, strengthening programs, and functional rehabilitation to maintain muscle function while nerves heal.
- Surgical intervention: For severe compression or transection injuries — microdiscectomy for disc herniations, carpal tunnel release, or nerve repair surgery.
- Monitoring: Serial NCV/EMG testing to track nerve recovery or progression of damage over time.
Why Early Treatment Matters
Nerve damage can be progressive — a compressed nerve that isn't treated may suffer permanent damage over time. The window for optimal treatment outcomes narrows as weeks pass. Additionally, early NCV/EMG testing establishes a baseline that documents the nerve injury close to the time of accident, strengthening the causal connection.
Get a Nerve Damage Evaluation in the Bronx
If you're experiencing numbness, tingling, or weakness after a car accident, call MAIC at (888) 991-5290 for a same-day neurology evaluation with on-site NCV/EMG and MRI. No-Fault and Workers' Compensation accepted — zero out-of-pocket.