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Seated Flexion Test

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Other Names

  • Seated Forward Flexion Test


Seated Flexion Test[1]


  • The patient is seated, examiner behind patient
  • The examiner places each hand on one PSIS
  • Ask the patient to bend forward while monitoring movement of the PSIS
  • Positive test:
    • Greater superior motion felt on the affected side



  • Sensitivity: 9%[2]
  • Specificity: 93%

See Also


  1. Image courtesy of O'Keefe, Paul. Inter-examiner and intra-examiner reliability of the seated flexion test. Diss. Victoria University, 2004.
  2. Levangie PK. Four clinical tests of sacroiliac joint dysfunction: the association of test results with innominate torsion among patients with and without low back pain. Phys Ther. 1999 Nov;79(11):1043-57. PubMed PMID: 10534797.
Created by:
John Kiel on 10 August 2019 01:45:45
Last edited:
20 May 2023 19:18:56