Lasègue’s Test is used to identify radicular pain from the L5-S1 nerve roots.

Performing the Test

  1. Perform a straight leg raise test but add dorsiflexion of the foot
  2. Pain brought on or aggravated by dorsiflexion is considered a positive result


  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.