<unk> es along with needle electromyography measure nerve and muscle function, and may be indicated when there is pain in the limbs, weakness from spinal nerve compression, or concern about some other neurologic injury or disorder. Spinal nerve injury does not cause neck, mid back pain or low back pain, and for this reason, evidence has not shown EMG or<unk>  to be helpful in diagnosing causes of axial lumbar pain, thoracic pain, or cervical spine pain.<unk> es are used mainly for evaluation of paresthesias (numbness, tingling, burning) and/or weakness of the arms and legs. The type of<unk>  required is dependent in part by the symptoms presented. A physical exam and thorough history also help to direct the investigation. Some of the common disorders that can be diagnosed by<unk> es are: * Carpal tunnel syndrome * Cubital Tunnel Syndrome * Guillain–Barré syndrome * Guyon's canal syndrome * Peripheral neuropathy * Peroneal neuropathy * Spinal disc herniation * Tarsal Tunnel Syndrome * Ulnar neuropathy
Nerve conduction study
Nerve biopsy
Electromyography
Muscle biopsy
Optomyography
Cervicography
Myelography
Femoral nerve stretch test