Cervicobrachial neuralgia: medical and surgical treatment

Cervicobrachial neuralgia — the cervical equivalent of sciatica — is one of the most frequent reasons for neurosurgical consultation in adults. It manifests as pain that begins in the neck and radiates down the arm, sometimes as far as the hand and fingers, following the territory of the compressed cervical nerve root. Dr Christian Dimitriu, spine neurosurgeon in Paris, explains the causes, symptoms by root level, conservative treatment options, and when surgery becomes the appropriate choice.

What is cervicobrachial neuralgia?

Cervicobrachial neuralgia is the clinical expression of cervical nerve root compression (radiculopathy). As the nerve roots exit the spinal cord and pass through the intervertebral foramina, they can be compressed by a herniated disc, an osteophyte (bone spur), or a combination of both — a situation increasingly common with advancing age as the cervical spine degenerates.

The condition affects approximately 83 per 100,000 adults per year, with a peak incidence in the fifth decade of life. Men and women are equally affected. The cervical levels C5–C6 and C6–C7 account for roughly 90% of cases, making C6 and C7 the most commonly affected roots. In younger patients (under 45), an acute disc herniation is the usual culprit; in older patients, osteophytic foraminal stenosis predominates.

Unlike cervical myelopathy — which involves spinal cord compression — cervicobrachial neuralgia involves compression of a peripheral nerve root. This distinction is clinically important: nerve roots have a greater capacity for recovery than the spinal cord, and the natural history is considerably more favourable, with the majority of patients recovering without surgery.

Symptoms by nerve root level

The clinical presentation of cervicobrachial neuralgia varies according to the compressed root level. Each root has a predictable dermatome (area of skin it supplies) and myotome (muscles it controls), allowing the clinician to localise the lesion on examination alone before MRI confirmation.

C5 root (C4–C5 disc level)

C5 root compression produces pain in the shoulder and outer aspect of the upper arm, sometimes mimicking shoulder pathology such as rotator cuff disease. Sensory loss occurs over the deltoid region. The key motor sign is weakness of the deltoid and infraspinatus muscles (shoulder abduction and external rotation). The biceps reflex may be diminished. C5 radiculopathy accounts for approximately 5 to 10% of cervical radiculopathies.

C6 root (C5–C6 disc level)

C6 root compression is the second most common cervical radiculopathy. Pain radiates from the neck along the lateral arm and forearm to the thumb and index finger. Numbness and tingling in these fingers are characteristic. The key motor signs are weakness of the biceps and wrist extensors. The biceps reflex (C5–C6) is typically reduced or absent on the affected side — an important clinical sign.

C7 root (C6–C7 disc level)

C7 is the most frequently compressed cervical root, accounting for 45 to 60% of cervical radiculopathies. Pain radiates from the neck along the posterior arm and forearm to the middle finger, sometimes involving the ring finger. Sensory loss predominates on the dorsal aspect of the middle finger. The key motor sign is weakness of the triceps (elbow extension) and wrist flexors. The triceps reflex is diminished or absent. Patients may notice difficulty pushing open doors or performing push-up movements.

C8 root (C7–T1 disc level)

C8 root compression is the least common cervical radiculopathy, accounting for approximately 2 to 8% of cases. Pain and numbness radiate to the ring and little fingers, along the medial forearm. Key motor signs include weakness of intrinsic hand muscles (finger abductors, finger flexors), producing subtle grip impairment. No major deep tendon reflex is specifically attributable to C8, making clinical diagnosis more dependent on sensory and motor mapping.

Diagnosis: clinical examination and MRI

The diagnosis of cervicobrachial neuralgia is primarily clinical. Dr Dimitriu performs a thorough neurological examination including assessment of cervical range of motion, Spurling’s test (axial compression with ipsilateral lateral flexion, which reproduces radicular pain), deep tendon reflexes, and a detailed dermatomal sensory and myotomal motor assessment.

MRI of the cervical spine is the reference imaging investigation. T2-weighted sequences identify the herniated disc or osteophytic stenosis, quantify the degree of foraminal narrowing, and confirm root compression at the clinically predicted level. Plain radiographs and CT scans may complement MRI when bony anatomy requires more precise assessment. Electromyography (EMG) is reserved for atypical presentations or when a peripheral neuropathy must be excluded.

Conservative treatment: the first-line approach (6–12 weeks)

In the absence of significant motor deficit or progressive neurological deterioration, conservative treatment is the appropriate first-line management for cervicobrachial neuralgia. 80 to 90% of patients improve within 6 to 12 weeks without surgery, owing to the natural resorption of herniated disc material and resolution of perineural inflammation.

Pharmacological treatment

• NSAIDs (ibuprofen, naproxen, celecoxib): first-line anti-inflammatory and analgesic agents. Prescribed for 10 to 14 days at standard doses; longer courses require gastroprotection. They target the prostaglandin-mediated inflammatory component of radicular pain, which predominates in the acute phase.
• Short oral corticosteroid course (prednisolone or methylprednisolone, 5 to 7 days): highly effective for acute, severe radicular pain with a significant inflammatory component. Not appropriate for prolonged use due to systemic side effects. Supported by multiple randomised trials demonstrating faster short-term pain relief compared with placebo.
• Neuropathic agents (gabapentin 300–900 mg/day, pregabalin 75–150 mg/day): effective for the burning, electric, or shooting quality of nerve root pain. Require titration; drowsiness and dizziness are common initial side effects.
• Muscle relaxants (cyclobenzaprine, methocarbamol): useful when prominent cervical muscle spasm accompanies the radiculopathy. Short courses of 5 to 7 days are recommended.

Physiotherapy

Physiotherapy is an integral component of conservative management. A programme supervised by a physiotherapist experienced in cervical conditions should include:

• Gentle active cervical mobilisation within pain-free range
• Deep cervical flexor strengthening (longus colli, longus capitis)
• Postural correction to reduce forward head posture and dynamic foraminal narrowing
• Scapular stabilisation exercises to reduce shoulder girdle tension
• Neural gliding (nerve flossing) techniques under therapist supervision

Foraminal corticosteroid injection

Transforaminal epidural steroid injection — performed under CT or fluoroscopic guidance — delivers a concentrated depot of corticosteroid (betamethasone or triamcinolone) directly adjacent to the compressed nerve root. Evidence from multiple randomised controlled trials (including the Carette et al. trial published in the New England Journal of Medicine) demonstrates significant short-term pain relief in 60 to 80% of patients. The effect is particularly pronounced in acute radiculopathy with a dominant inflammatory component. Duration of benefit is variable: 4 to 12 weeks in most patients. A maximum of two to three injections per year is recommended. Injection is not a permanent structural solution but may bridge the period of natural recovery or facilitate a course of physiotherapy.

When is surgery indicated?

Surgery is recommended when conservative treatment has failed after an appropriate period, or when specific clinical features mandate earlier intervention:

• Failure of conservative treatment: persistent disabling radicular pain after 6 to 12 weeks of NSAIDs, physiotherapy and, where appropriate, foraminal injection
• Significant motor deficit: weakness graded ≤ 3/5 on the MRC scale in a root-innervated muscle group — risk of irreversible denervation if compression is not relieved promptly
• Rapidly progressive neurological deficit: deteriorating neurology over days to weeks is a relative surgical urgency regardless of pain duration
• Intractable neuropathic pain: severe, pharmacologically refractory pain significantly impairing quality of life and sleep
• Recurrent episodes: repeated incapacitating episodes of cervical radiculopathy in a patient for whom conservative management has repeatedly failed

Surgical techniques: three options

The choice of surgical technique for cervicobrachial neuralgia depends on the level and side of compression, patient age, bone quality, presence of facet arthritis, the number of levels involved, and the patient’s preference and lifestyle. Dr Dimitriu discusses all options with each patient at the preoperative consultation.

Anterior cervical discectomy and fusion (ACDF)

ACDF is the most widely used surgical technique for single and two-level cervical radiculopathy worldwide. Via a small (3–4 cm) transverse cervical incision, the affected disc is completely removed, the nerve root is decompressed under microscopic visualisation, and the disc space is filled with an interbody cage (titanium or PEEK material packed with bone substitute). A low-profile titanium plate fixates the cage to the adjacent vertebrae, ensuring stability during fusion, which consolidates over 3 to 6 months. ACDF achieves radicular pain relief in 90 to 95% of patients with an excellent long-term track record spanning 40 years of published data.

Cervical disc arthroplasty (total disc replacement)

Cervical disc arthroplasty (CDA) offers decompression identical to ACDF but replaces the removed disc with a mobile prosthesis that preserves physiological motion at the treated level. The rationale is to reduce stress on adjacent intervertebral levels, thereby lowering the long-term risk of adjacent segment degeneration. Multiple randomised controlled trials — including the ProDisc-C trial (Murrey et al., Spine J 2009), the Mobi-C trial (Davis et al., J Neurosurg Spine 2013), and the SECURE-C trial — demonstrate non-inferiority to ACDF at 7 to 10 years, with significantly reduced reoperation rates at adjacent levels (relative risk reduction approximately 50%). CDA is the preferred option for patients aged under 55 years, with single or two-level disease, healthy facet joints, no significant osteoporosis, and an active lifestyle. Absolute contraindications include facet arthritis, significant cervical instability, severe osteoporosis, and ongoing infection.

Posterior cervical foraminotomy

Posterior foraminotomy is a keyhole procedure performed through the back of the neck, in which a small portion of the facet joint is removed to widen the neural foramen and decompress the nerve root, without disturbing the disc or requiring fusion. It is particularly suited to lateral disc herniations and foraminal osteophytic stenosis causing unilateral radiculopathy at C6–C7 or C7–T1, in patients for whom disc arthroplasty is not appropriate but for whom preserving cervical motion is a priority. Published success rates are equivalent to ACDF for soft lateral herniations. The technique avoids the anterior approach, the risks of dysphagia and dysphonia associated with anterior surgery, and preserves cervical motion. It is not appropriate for central disc herniations, multilevel disease, or when anterior decompression of the spinal cord is required.

Surgical outcomes and recovery

Surgery for cervicobrachial neuralgia delivers excellent outcomes when the indication is appropriate and the level of compression accurately identified:

• Radicular pain relief in 90 to 95% of patients: the characteristic shooting, electric arm pain is typically eliminated or markedly reduced by decompression. Many patients describe immediate improvement on waking from anaesthesia.
• Motor recovery: motor deficits generally recover progressively over 3 to 6 months following decompression. Complete recovery is expected when the deficit was mild and short-lived. Severe, long-standing deficits may only partially recover owing to established axonal damage.
• Sensory recovery: tingling and numbness typically resolve more slowly than pain, over 3 to 12 months.
• Hospitalisation: 24 to 48 hours for anterior procedures (ACDF, CDA) and posterior foraminotomy.
• Return to sedentary work: 2 to 4 weeks post-operatively.
• Return to manual or physical work: 6 to 8 weeks.
• Return to sport: 6 to 12 weeks depending on the sport and the technique used (contact sports require longer restriction after fusion).

Frequently asked questions

Sources: Radhakrishnan K et al., Neurology 1994 — Carette S et al., N Engl J Med 2005 — Murrey D et al., Spine J 2009 — Davis RJ et al., J Neurosurg Spine 2013 — SFNC, EANS, AOSpine guidelines 2023.