Straight leg raise

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Straight leg raise Classification and external resources

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The Straight leg raise also, called Lasègue sign or Lasègue test, is a test done during the physical examination to determine whether a patient with low back pain has an underlying herniated disk.

Technique

With the patient lying down on a table, the examiner lifts the patient's leg while the knee is straight.

A variation is to lift the leg while the patient is sitting.^[1] However, this reduces the sensitivity of the test.^[1]

Interpretation

"The straight leg raise test is positive if pain in the sciatic distribution is reproduced between 30° and 70° passive flexion of the straight leg." ^[1]

A meta-analysis reported the accuracy is^[1]:

• sensitivity 91%
• specificity 26%

If the raising the opposite leg causes pain (cross straight leg raising):

• sensitivity 29%
• specificity 88%

References

v • d • e Symptoms and signs (R00-R69, 780-789)
Circulatory and respiratory systems	Tachycardia - Bradycardia - Palpitation - Heart murmur - Nosebleed - Hemoptysis - Cough - abnormalities of breathing (Dyspnea, Orthopnoea, Stridor, Wheeze, Cheyne-Stokes respiration, Hyperventilation, Mouth breathing, Hiccup, Bradypnea, Hypoventilation) - Chest pain - Asphyxia - Pleurisy - Respiratory arrest - Sputum - Bruit
Digestive system and abdomen	Abdominal pain - Acute abdomen - Nausea - Vomiting - Heartburn - Dysphagia - Flatulence - Burping - Fecal incontinence - Encopresis - Hepatomegaly - Splenomegaly - Hepatosplenomegaly - Jaundice - Ascites - Fecal occult blood - Halitosis
Skin and subcutaneous tissue	disturbances of skin sensation (Hypoesthesia, Paresthesia, Hyperesthesia) - Rash - Cyanosis - Pallor - Flushing - Petechia - Desquamation - Induration
Nervous and musculoskeletal systems	abnormal involuntary movements (Tremor, Spasm, Fasciculation, Athetosis) - Gait abnormality - lack of coordination (Ataxia, Dysmetria, Dysdiadochokinesia, Hypotonia) - Tetany - Meningism - Hyperreflexia
Urinary system	Dysuria - Vesical tenesmus - Urinary incontinence - Urinary retention - Oliguria - Polyuria - Nocturia
Cognition, perception, emotional state and behaviour	Anxiety - Somnolence - Coma - Amnesia (Anterograde amnesia, Retrograde amnesia) - Dizziness/Vertigo - smell and taste (Anosmia, Ageusia, Parosmia, Parageusia)
Speech and voice	speech disturbances (Dysphasia, Aphasia, Dysarthria) - symbolic dysfunctions (Dyslexia, Alexia, Agnosia, Apraxia, Acalculia, Agraphia) - voice disturbances (Dysphonia, Aphonia)
General symptoms and signs	Fever (Hyperpyrexia) - Headache - Chronic pain - Malaise - Fatigue - Fainting (Vasovagal syncope) - Febrile seizure - Shock (Cardiogenic shock) - Lymphadenopathy - Edema (Peripheral edema, Anasarca) - Hyperhidrosis (Sleep hyperhidrosis) - Delayed milestone - Failure to thrive - food and fluid intake (Anorexia, Polydipsia, Polyphagia) - Cachexia - Xerostomia - Clubbing

v • d • e WikiDoc Research Resources for Straight leg raise
Articles on Straight leg raise	Most recent articles on Straight leg raise • Most cited articles on Straight leg raise • Review articles on Straight leg raise • Articles on Straight leg raise in N Eng J Med, Lancet, BMJ
Media (Slides, Video, Images, MP3) on Straight leg raise	Powerpoint slides on Straight leg raise • Images of Straight leg raise • Photos of Straight leg raise • Podcasts & MP3s on Straight leg raise • Videos on Straight leg raise
Evidence Based Medicine Regarding Straight leg raise	Cochrane Collaboration on Straight leg raise • Bandolier on Straight leg raise • TRIP on Straight leg raise
Cost Effectiveness of Straight leg raise	Cost Effectiveness of Straight leg raise
Clinical Trials Involving Straight leg raise	Ongoing Trials on Straight leg raise at Clinical Trials.gov • Trial results on Straight leg raise • Clinical Trials on Straight leg raise at Google
Guidelines / Policies / Government Resources (FDA/CDC) Regarding Straight leg raise	US National Guidelines Clearinghouse on Straight leg raise • NICE Guidance on Straight leg raise • NHS PRODIGY Guidance • FDA on Straight leg raise • CDC on Straight leg raise
Textbook Information on Straight leg raise	Books and Textbook Information on Straight leg raise
Pharmacology Resources on Straight leg raise	Dosing of Straight leg raise • Drug interactions with Straight leg raise • Side effects of Straight leg raise • Allergic reactions to Straight leg raise • Overdose information on Straight leg raise • Carcinogenicity information on Straight leg raise • Straight leg raise in pregnancy • Pharmacokinetics of Straight leg raise •
Genetics, Pharmacogenomics, and Proteinomics of Straight leg raise	Genetics of Straight leg raise • Pharmacogenomics of Straight leg raise • Proteomics of Straight leg raise
Newstories on Straight leg raise	Straight leg raise in the news • Be alerted to news on Straight leg raise • News trends on Straight leg raise
Commentary on Straight leg raise	Blogs on Straight leg raise
Patient Resources on Straight leg raise	Patient resources on Straight leg raise • Discussion groups on Straight leg raise • Patient Handouts on Straight leg raise • Directions to Hospitals Treating Straight leg raise • Risk calculators and risk factors for Straight leg raise
Healthcare Provider Resources on Straight leg raise	Symptoms of Straight leg raise • Causes & Risk Factors for Straight leg raise • Diagnostic studies for Straight leg raise • Treatment of Straight leg raise
Continuing Medical Education (CME) Programs on Straight leg raise	CME Programs on Straight leg raise
International Resources on Straight leg raise	Straight leg raise en Espanol • Straight leg raise en Francais
Business Resources on Straight leg raise	Straight leg raise in the Marketplace • Patents on Straight leg raise
Informatics Resources on Straight leg raise	List of terms related to Straight leg raise

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