Value of repeat electromyographic studies in patients with stable lumbar radiculopathies

Vivian E. Drory*, Galina B. Groozman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We analyzed retrospectively electromyographic evaluations of 76 patients with stable post-traumatic lumbar radiculopathies who underwent repeated electrodiagnostic examinations. Their median time from injury was 4.5 years. Median time between examinations was 21 months. In 36 (46%) there was no significant change. 18 patients (24%) showed mild improvement, 8 (11%) marked improvement, 12 (16%) mild deterioration and 2 (3%) had severe deterioration. Patients who improved were examined usually shorter time after injury. None improved more than eight years after the injury. Marked worsening between examinations was seen only in older patients. A significant difference between examinations could be observed until up to 44 months after the first. In conclusion, significant late changes of the EMG are rare in patients with stable traumatic radiculopathies, but can occur also after years.

Original languageEnglish
Pages (from-to)37-42
Number of pages6
JournalJournal of Back and Musculoskeletal Rehabilitation
Issue number1
StatePublished - 2007


  • EMG
  • Electrodiagnosis
  • Electromyography
  • Lumbar radiculopathy
  • Lumbar trauma


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