II. Technique
- Perform in two positions (findings should be consistent in both positions)
- Supine Low Back Exam (flex hip toward 90 degrees)
- Sitting Low Back Exam (extend knee)
III. Interpretation: Criteria for positive test
- Sciatic Pain at 30 to 70 degrees
- Aggravation of pain with dorsiflexion of the foot
- Relief of pain by knee flexion
IV. Interpretation: What patient experiences
- Radiating pain into the legs
- Suggests radiculopathy
- Higher likelihood findings suggesting radiculopathy
- Excruciating Sciatica-like pain
- Pain occurs at 30 to 40 degrees of leg elevation
- Pain radiates into opposite leg (Crossed Straight Leg Raise)
- Indicates severe impingement
- Almost always is due to a large disk Herniation
V. Modifications
- Crossed leg testing (see efficacy below)
- Lasegue's Test
- Dorsiflex foot while performing Straight Leg Raise
- Slump Test
- Patient sits upright and then flexing at waist with head to knees, in slumped position
- Patient lifts leg
VI. Efficacy: Predicting Lumbar Disc Herniation
- Straight Leg Raise
- Test Sensitivity: 80-98%
- Test Specificity: 40-60%
- Positive Likelihood Ratio: 2.0
- Negative Likelihood Ratio: 0.2 to 0.5 (high Negative Predictive Value)
- Crossed Straight Leg Raise
- Test Sensitivity: Up to 35-43%
- Test Specificity: 90-98%
- Positive Likelihood Ratio: 3.5 to 4.3 (high Positive Predictive Value)
- Negative Likelihood Ratio: 0.72
VII. References
Images: Related links to external sites (from Bing)
Related Studies
| Concepts | Diagnostic Procedure (T060) |
| SnomedCT | 57571002 |
| English | Contralateral straight raising test, Crossed straight leg test, Well leg straight leg raising test, Crossed straight leg test (procedure) |
| Spanish | prueba de la elevación de la pierna extendida contralateral, prueba de la pierna extendida cruzada (procedimiento), prueba de la pierna extendida cruzada, prueba de elevación de la pierna extendida |
Ontology: Lasegue test procedure (C1288281)
| Concepts | Diagnostic Procedure (T060) |
| SnomedCT | 367486006, 298691007, 63080005 |
| Dutch | proef van Lasègue, gestrekt heffen van been test |
| French | Test de Lassègue, Test d'élévation de la jambe tendue |
| German | Lasègue-Test |
| Italian | Test di Lasègue, Test di sollevamento della gamba tesa |
| Portuguese | Teste de Lasegue, Teste de levantamento da perna a direito |
| Spanish | Prueba de Lasegue, Prueba del estiramiento de extremidad inferior, prueba de Lasègue, prueba de Lasegue, prueba de Laségue (procedimiento), prueba de elevación de la pierna extendida (procedimiento), prueba de Laségue, prueba de elevación de la pierna extendida, prueba de Lasègue (procedimiento), prueba de Lasègue (concepto no activo), prueba de elevación de la extremidad inferior extendida, prueba de Lasegue (procedimiento) |
| Japanese | 下肢伸展挙上試験, ラセーグテスト, ｶｼｼﾝﾃﾝｷｮｼﾞｮｳｼｹﾝ, ﾗｾｰｸﾞﾃｽﾄ |
| English | Straight leg raising test, Las@gue test, lumbosacral spine straight-leg raising test, straight-leg raising test (physical finding), straight-leg raising test, Lasegue test, straight leg raising test, leg raising straight tests, Straight leg raising test (procedure), Straight leg raising test (procedure) [Ambiguous], Lasègue test, Lasegue test procedure, Lasegue's test, Straight leg raise test |
| Czech | Lasegueův test, Test zvednutí natažené nohy |
| Hungarian | Egyenes láb emelési vizsgálat, Lasegue vizsgálat |
