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Doctor insights on: Surface Electromyography Semg

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Is a surface electromyography (semg scan) done by a chiropractor?

Is a surface electromyography (semg scan) done by a chiropractor?

Not usually: Apparently a few chiros have acquired this type of equipment but they have inadequate training and background to properly interpret the results. This type of testing should be done by a real doctor such as a neurologist. ...Read more

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Dr. Michele Arnold
1,328 doctors shared insights

Electromyography (Definition)

Emg (electromyography) is a test of your muscles and nerves. It is typically performed along with nerve conduction studies (ncs). The EMG portion involves placing a recording pin (like a fine wire antenna) into various muscles, looking for 'muscle distress signals' that could suggest nerve or muscle diseases/problems. Nerve conduction studies involve stimulating nerves ...Read more


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What is electromyography (emg )?

What is electromyography (emg )?

Electromyography: Emg and ncv testing is used to help diagnose nerve and muscle problems. Examples include spinal nerve impingement (from herniated disc), carpel tunnel syndrome, ulnar syndrome, sources of radiating pain. Pain, numbness, weakness, muscle fatigue are some of the reasons that you may need an emg/ncv test. ...Read more

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What is an emg and nerve conduction test for?

What is an emg and nerve conduction test for?

Nerves & muscles: Emg and nerve conduction studies are used to detect abnormalities of nerves and muscles. The test evaluates nerve roots as they exit your spine, the nerve plexus, peripheral nerves, the nerve-muscle junction, and muscle itself. It can detect pinched/compressed nerves (sciatica, carpal tunnel, and others), muscle disorders, neuropathy, and many other neuromuscular conditions. ...Read more

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What is a nerve conduction velocity (NCV) test?

What is a nerve conduction velocity (NCV) test?

Part of EMG: Nerve function can be tested using electromyography, and the NCV test applies an electrical shock over the nerve to ascertain if normal velocity and voltage is present. Patterns of nerve abnormality can diagnose different diseases. ...Read more

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Common peroneal nerves, f-waves of CPN & PTN, H-reflex, SNAP of sural nerves and superficial peroneal nerves are not recordable.( report of NCV test)?

Common peroneal nerves, f-waves of CPN & PTN, H-reflex, SNAP of sural nerves and superficial peroneal nerves  are not recordable.( report of NCV test)?

NCV Test: A lot of times these NCV tests are inconclusive or need to be repeated. Do you have any symptoms like numbness or tingling? Any history of diabetes or peripheral neuropathy? These disorders may explain those findings. Nerve trauma can also be a possible etiology. ...Read more

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EMG and NCV .Which test will be better to detect nerve damage.?

EMG and NCV .Which test will be better to detect nerve damage.?

Often you: need both. The NCS will check on how fast the nerves are working and the EMG will make sure the muscle is getting adequate nerve impulses. ...Read more

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Does a nerve conduction study and an emg hurt?

Does a nerve conduction study and an emg hurt?

Maybe uncomfortable: Most patient's tell me it was not as painful as anticipated. The ncs involves electrical stimulation of the nerves, the EMG involves inserting a very small needle into several mucles. I think most patients describe the test as uncomfortable not painful. ...Read more

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What is an emg nerve test used for?

What is an emg nerve test used for?

Nerves & muscles: Emg and nerve conduction studies are used to detect abnormalities of nerves and muscles. The test evaluates nerve roots as they exit your spine, the nerve plexus, peripheral nerves, the nerve-muscle junction, and muscle itself. It can detect pinched/compressed nerves (sciatica, carpal tunnel, and others), muscle disorders, neuropathy, and many other neuromuscular conditions. ...Read more

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Have had emg ncv & mri. Tests show pinced nerves in cervical & lumbar spine. Personal trainer claims core exercises will cure condition. Thoughts?

Have had emg ncv & mri.  Tests show  pinced nerves in cervical & lumbar spine.  Personal trainer claims  core exercises will cure  condition. Thoughts?

Let me explain: Those finding on the test you had means you have a mechanical changes, training or exercise will not change them it may improve your symptoms so you could live with it. ...Read more

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Nerves pressed, had cauda equina, did surgery, bladder not emptying, repeated MRI & found little fluid collection.Doctor order nerve conduction test.Why ?

Nerves pressed, had cauda equina, did surgery, bladder not emptying, repeated MRI & found little fluid collection.Doctor order nerve conduction test.Why ?

True true unrelated: My guess is that the nerve conduction test was to see if you had residual nerve damage from the initial problem. Surgery can relieve the pressure but the nerve damage might take up to 2 years to heal - or not heal at all. The EMG was likely to assess the extent of the problem to direct further therapy. Ask your doc why, too. ...Read more

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Will a torn glutus maximus muscle also cause nerve damage?

Not directly: The sciatic nerve runs deep to the gluteus maximus and piriformis muscles after the nerve exits the pelvis. An injury mechanism that causes injury to these muscles could conceivably impact the sciatic nerve as well. Otherwise , an injury to the gmax muscle does not necessarily "cause" nerve damage. ...Read more

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Does normal EMG (single fiber and repetitive nerve stimulation) completely rule out the possibility of congenital myasthenia?

NOT immune part: Myasthenia is an immune attack against the muscle succinylcholine receptors. Immune attack cannot be seen on the EMG; only the muscle damage can, which is not immediate. By the way, MG is just one of MANY abnormal neuromuscular conditions. ...Read more

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Emg vs muscle biopsy?

See different things: Both tests are useful, but they serve different purposes. Emg is a functional test that allows for the assessment of muscle irritability, as well as signs of nerve damage. It is fast, minimally invasive, and can be performed on multiple muscles in a single session. Biopsy is an anatomical test that is more invasive, but provides a deeper look at muscle structure. ...Read more

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Can emg determine if carpal tunnel cause of hand pain? Mri shows cervical stenosis. Emg only done on arm, confirmed carp tunl, not done on neck?

Can emg determine if carpal tunnel cause of hand pain? Mri shows cervical stenosis. Emg only done on arm, confirmed carp tunl, not done on neck?

Yes: The nerve study can determine if there is a compression at the neck or further down such as the wrist in carpal tunnel syndrome. This is only one portion of the diagnostic workup and should include a full exam by a hand surgeon. If there are 2 issues then release of the carpal tunnel is generally regarded as the first line treatment as recently evident in an article published this month. ...Read more

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Can ncv test be done on spinal cord and trapezius muscles ?

Can ncv test be done on spinal cord and trapezius muscles ?

Technical answers: The trapezius muscles and other muscles over the shoulder girdle can be tested using EMG/ NCV techniques. Spinal cord electrodiagnosis is best via Somatosensory Evoked Potentials. But, usually, we prefer MRI imaging of the spinal cord. ...Read more

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Hip bursitis caused by a tear in gluteus medius tendon MRI showed tear of 23mm ap and 30 mm retraction fluid distension and tears of acetabular lab

Hip bursitis caused by a tear in gluteus medius tendon MRI showed  tear of 23mm ap  and 30 mm retraction fluid distension and tears of acetabular  lab

Review mri : You need to have your MRI reviewed and get a good exam of the affected area you will likely improve with rest, nsaids and physical therapy surgical treatment is unlikely unless you are very young and athletic which sometimes requires a hip arthroscopic surgery. ...Read more

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Difference between nerve conduction study and emg?

Difference between nerve conduction study and emg?

See below: The EMG portion uses a small needle to directly examine muscle function, and the nerve conduction part uses electrical shocks to measure nerve function. Together the study gives a good idea of the nature of the pathology and location, but can also assess the prognosis and character, and gives often guidance towards an eventual diagnosis. ...Read more

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