OnExam

Assesses nerve impingement and lumbar radiculopathy

Performing the Test

  1. With the patient lying supine, the examiner passively raises the leg while maintaining knee extension and neutral ankle dorsiflexion
  2. Positive test: reproduction of symptoms and sensitization with hip flexion,
  3. Herniated disc post-test probabilities:
    • Sensitivity: 97%, Specificity: 57%
    • LR+ = 2.23, LR- =0.05

References

  1. Baxter S, ed., McScheffrey G, ed. Toronto Notes: Comprehensive Medical Reference & Review for MCCQE 1 & USMLE 2. 26th ed. Toronto: Toronto Notes for Medical Students Inc; 2010.
  2. Hurley K. OSCE and Clinical Skills Handbook. Halifax: Elsevier Canada; 2005.
  3. Essential Evidence Plus. http://www.essentialevidenceplus.com. 2011. Accessed February 2011.