19/05/2026
اختبار للعصب السابع العنقي
🧠 C7 Neurological Level – Understanding the C7 Nerve Root
The C7 nerve root is one of the major cervical nerves in the neck that helps control movement, reflexes, and sensation in the upper limb. Problems such as a C6–C7 disc herniation, cervical radiculopathy, or nerve compression can affect this nerve and lead to pain, weakness, or numbness.
Motor Function (Movement)
The C7 nerve root mainly controls the triceps muscle, which is responsible for elbow extension (straightening the arm).
Common signs of C7 weakness may include:
➟ Difficulty pushing objects
➟ Weak triceps strength
➟ Reduced grip power
➟ Trouble performing pushing movements
Reflex
The triceps reflex is associated with the C7 nerve root.
A reduced or absent triceps reflex may suggest:
➟ C7 nerve compression
➟ Cervical disc disease
➟ Nerve root irritation
Sensation Area
The C7 dermatome supplies sensation to:
➟ The middle finger
➟ Central part of the hand
Patients with C7 irritation may experience:
➟ Numbness
➟ Tingling (“pins and needles”)
➟ Burning pain radiating down the arm
➟ Sensory loss in the middle finger
⚠️ Common Causes of C7 Nerve Compression
➟ C6–C7 disc herniation
➟ Cervical spondylosis
➟ Foraminal stenosis
➟ Degenerative spine changes
➟ Trauma or poor posture
💡 Management & Treatment
Treatment depends on severity and cause:
➟ Physical therapy and posture correction
➟ Neck mobility and strengthening exercises
➟ Anti-inflammatory medications
➟ Activity modification
➟ Epidural steroid injections
➟ Surgery in severe neurological compression
Understanding cervical nerve root levels is essential in neurology, orthopedics, physiotherapy, and rehabilitation medicine because symptoms often follow predictable motor, reflex, and sensory patterns.
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