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EMG/electromyography/electromyographic examination

Electromyography is a supportive diagnostic method used to evaluate a wide range of neuromuscular disorders — conditions affecting the function of nerves, muscles or neuromuscular transmission.

EMG consists of two parts:

  • nerve conduction studies (NCS)

  • needle EMG, performed when clinically indicated.

⭐ Nerve conduction studies (NCS)

Nerve conduction studies are performed by applying small electrical impulses through surface electrodes placed on the limbs. By recording the responses, the physician can determine whether there is damage to a peripheral nerve or nerve root (commonly used to confirm carpal tunnel syndrome and assess the need for surgery), peripheral nerve dysfunction (e.g., diabetic polyneuropathy), nerve injury after trauma and other conditions.

The electrical stimulation may feel uncomfortable or mildly painful for some patients, and brief muscle twitches may occur during stimulation.

EMG equipment
EMG equipment
electrodes
electrodes

⭐ Needle EMG

Needle EMG involves inserting a thin needle electrode into the muscle to record bioelectrical activity generated by muscle fibres. This part of the examination may be uncomfortable due to the insertion of the needle.

EMG device
EMG device

⭐ Preparation before the examination

  • Do not apply creams, lotions or any other products to your limbs on the morning of the examination (to minimise skin resistance).

  • Inform the nurse or physician if you have a pacemaker, cochlear implant, or if you are taking blood‑thinning medication (to assess possible contraindications or adjust the extent of the examination).

  • If you tend to faint during blood draws, please inform us in advance.

The EMG examination is performed jointly by a nurse and a neurologist. The findings are evaluated by the neurologist.

⭐ Are you experiencing spine‑related problems or preparing for cervical or lumbar spine surgery?

Explore our pre‑operative packages at the Vertebrogenic Centre, which include:

  • clinical neurological examination

  • EMG

  • MEP

—all performed in one place.

⭐ EMG as part of comprehensive diagnostic packages

EMG is included in our basic diagnostic programmes for:

  • polyneuropathy

  • restless legs syndrome (RLS)

  • carpal tunnel syndrome