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<meta name="robots" content="INDEX,FOLLOW,NOARCHIVE" /><meta name="citation_inbook_title" content="StatPearls [Internet]" /><meta name="citation_title" content="Babinski Reflex" /><meta name="citation_publisher" content="StatPearls Publishing" /><meta name="citation_date" content="2023/01/01" /><meta name="citation_author" content="Aninda B. Acharya" /><meta name="citation_author" content="Radia T. Jamil" /><meta name="citation_author" content="Jeffrey J. Dewey" /><meta name="citation_pmid" content="30085551" /><meta name="citation_fulltext_html_url" content="https://www.ncbi.nlm.nih.gov/books/NBK519009/" /><link rel="schema.DC" href="http://purl.org/DC/elements/1.0/" /><meta name="DC.Title" content="Babinski Reflex" /><meta name="DC.Type" content="Text" /><meta name="DC.Publisher" content="StatPearls Publishing" /><meta name="DC.Contributor" content="Aninda B. Acharya" /><meta name="DC.Contributor" content="Radia T. Jamil" /><meta name="DC.Contributor" content="Jeffrey J. Dewey" /><meta name="DC.Date" content="2023/01/01" /><meta name="DC.Identifier" content="https://www.ncbi.nlm.nih.gov/books/NBK519009/" /><meta name="description" content="The neurologist Joseph Babinski described the Babinski reflex (plantar reflex) in 1896. Since that time, it has been incorporated into the standard neurological examination. The Babinski reflex is easy to elicit without sophisticated equipment. Also, it requires little active patient participation, so it can be performed in patients who cannot cooperate with the neurological exam.[1][2][3] See Image. Pathological Babinski Sign in an Adult." /><meta name="og:title" content="Babinski Reflex" /><meta name="og:type" content="book" /><meta name="og:description" content="The neurologist Joseph Babinski described the Babinski reflex (plantar reflex) in 1896. Since that time, it has been incorporated into the standard neurological examination. The Babinski reflex is easy to elicit without sophisticated equipment. Also, it requires little active patient participation, so it can be performed in patients who cannot cooperate with the neurological exam.[1][2][3] See Image. Pathological Babinski Sign in an Adult." /><meta name="og:url" content="https://www.ncbi.nlm.nih.gov/books/NBK519009/" /><meta name="og:site_name" content="NCBI Bookshelf" /><meta name="og:image" content="https://www.ncbi.nlm.nih.gov/corehtml/pmc/pmcgifs/bookshelf/thumbs/th-statpearls-lrg.png" /><meta name="twitter:card" content="summary" /><meta name="twitter:site" content="@ncbibooks" /><meta name="bk-non-canon-loc" content="/books/n/statpearls/article-18083/" /><link rel="canonical" href="https://www.ncbi.nlm.nih.gov/books/NBK519009/" /><link rel="stylesheet" href="/corehtml/pmc/css/figpopup.css" type="text/css" media="screen" /><link rel="stylesheet" href="/corehtml/pmc/css/bookshelf/2.26/css/books.min.css" type="text/css" /><link rel="stylesheet" href="/corehtml/pmc/css/bookshelf/2.26/css/books_print.min.css" type="text/css" /><style type="text/css">p a.figpopup{display:inline !important} .bk_tt {font-family: monospace} .first-line-outdent .bk_ref {display: inline} </style><script type="text/javascript" src="/corehtml/pmc/js/jquery.hoverIntent.min.js"> </script><script type="text/javascript" src="/corehtml/pmc/js/common.min.js?_=3.18"> </script><script type="text/javascript">window.name="mainwindow";</script><script type="text/javascript" src="/corehtml/pmc/js/bookshelf/2.26/book-toc.min.js"> </script><script type="text/javascript" src="/corehtml/pmc/js/bookshelf/2.26/books.min.js"> </script>
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<div class="pre-content"><div><div class="bk_prnt"><p class="small">NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.</p><p>StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. </p></div></div></div>
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<div class="main-content lit-style" itemscope="itemscope" itemtype="http://schema.org/CreativeWork"><div class="meta-content fm-sec"><h1 id="_NBK519009_"><span class="title" itemprop="name">Babinski Reflex</span></h1><p class="contrib-group"><h4>Authors</h4><span itemprop="author">Aninda B. Acharya</span><sup>1</sup>; <span itemprop="author">Radia T. Jamil</span><sup>2</sup>; <span itemprop="author">Jeffrey J. Dewey</span><sup>3</sup>.</p><h4>Affiliations</h4><div class="affiliation"><sup>1</sup> Missouri Baptist Medical Center</div><div class="affiliation"><sup>2</sup> Allama Iqbal Medical College</div><div class="affiliation"><sup>3</sup> Yale School of Medicine</div><p class="small">Last Update: <span itemprop="dateModified">January 1, 2023</span>.</p></div><div class="body-content whole_rhythm" itemprop="text"><div id="article-18083.s1"><h2 id="_article-18083_s1_">Continuing Education Activity</h2><p>The Babinski reflex was described by the neurologist Joseph Babinski in 1896. Since that time, it has been incorporated into the standard neurological examination. The Babinski reflex is easy to elicit without sophisticated equipment. Since it is a reflex, it does not require active patient participation and, therefore, can be performed in patients who are otherwise unable to cooperate with the neurological exam. This activity describes the Babinski reflex test technique and how to interpret the results. This activity highlights the interprofessional team's role in managing patients with upper motor neuron lesions.</p><p>
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<b>Objectives:</b>
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<ul><li class="half_rhythm"><div>Assess how the Babinski reflex test is performed.</div></li><li class="half_rhythm"><div>Identify the physiologic pathway of the Babinski reflex.</div></li><li class="half_rhythm"><div>Evaluate the clinical relevance of the Babinski reflex.</div></li><li class="half_rhythm"><div>Communicate how the facilitation of interprofessional team education and discussion can optimize the effective performance of the Babinski reflex test and inform the need for subsequent evaluations.</div></li></ul>
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</p></div><div id="article-18083.s2"><h2 id="_article-18083_s2_">Introduction</h2><p>The neurologist Joseph Babinski described the Babinski reflex (plantar reflex) in 1896. Since that time, it has been incorporated into the standard neurological examination. The Babinski reflex is easy to elicit without sophisticated equipment. Also, it requires little active patient participation, so it can be performed in patients who cannot cooperate with the neurological exam.<a class="bk_pop" href="#article-18083.r1">[1]</a><a class="bk_pop" href="#article-18083.r2">[2]</a><a class="bk_pop" href="#article-18083.r3">[3]</a> See <b>Image.</b> Pathological Babinski Sign in an Adult.</p></div><div id="article-18083.s3"><h2 id="_article-18083_s3_">Anatomy and Physiology</h2><p>The Babinski reflex tests the integrity of the corticospinal tract (CST). The CST is a descending fiber tract originating from the cerebral cortex through the brainstem and spinal cord. Fibers from the CST synapse with the alpha motor neuron in the spinal cord and help direct motor function. The CST is the upper motor neuron (UMN), and the alpha motor neuron is the lower motor neuron (LMN). Sixty percent of the CST fibers originate from the primary motor cortex, premotor areas, and supplementary motor areas. The remainder originates from primary sensory areas, the parietal cortex, and the operculum. Damage anywhere along the CST can result in the presence of a Babinski sign. Stimulation of the lateral plantar aspect of the foot (S1 dermatome) normally leads to plantar flexion of the toes (due to stimulation of the S1 myotome). The response results from nociceptive fibers in the S1 dermatome detecting the stimulation. Nociceptive input travels up the tibial and sciatic nerve to the S1 region of the spine and synapses with anterior horn cells. The motor response that leads to the plantar flexion is mediated through the S1 root and tibial nerve. The toes curl down and inward. Sometimes, there is no response to stimulation. This is called a neutral response. This response does not rule out pathology.</p><p>The descending fibers of the CST normally keep the ascending sensory stimulation from spreading to other nerve roots. When there is damage to the CST, nociceptive input spreads beyond S1 anterior horn cells. This leads to the L5/L4 anterior horn cells firing, which results in the contraction of toe extensors (extensor hallucis longus, extensor digitorum longus) via the deep peroneal nerve. Babinski sign occurs when stimulation of the lateral plantar aspect of the foot leads to the big toe's extension (dorsiflexion or upward movement) (hallux). Also, there may be fanning of the other toes. This suggests a spread of the sensory input beyond the S1 myotome to L4 and L5. An intact CST prevents such spread. In infants with CST, which is not fully myelinated, the presence of a Babinski sign in the absence of other neurological deficits is considered normal up to 24 months of age. The Babinski reflex may be present when a patient is asleep.<a class="bk_pop" href="#article-18083.r4">[4]</a><a class="bk_pop" href="#article-18083.r5">[5]</a></p></div><div id="article-18083.s4"><h2 id="_article-18083_s4_">Indications</h2><p>The Babinski reflex is done as part of the routine neurological exam and is utilized to determine the integrity of the CST (see <b>Image.</b> Babinski Reflex). The presence of a Babinski sign suggests damage to the CST. Because the CST fiber tracts run from the brain, through the brainstem, and into the spinal cord, lesions of the central nervous system (CNS) often affect the integrity of the CST. Thus, the presence or absence of the Babinski reflex can provide very useful information on the presence or absence of pathology affecting the CNS. Babinski reflex is especially important in the setting where there is suspicion of spinal cord injury or stroke, as it may be an early indicator of the presence of these emergency conditions.<a class="bk_pop" href="#article-18083.r6">[6]</a><a class="bk_pop" href="#article-18083.r7">[7]</a><a class="bk_pop" href="#article-18083.r8">[8]</a></p></div><div id="article-18083.s5"><h2 id="_article-18083_s5_">Contraindications</h2><p>The only contraindication to performing the Babinski reflex is a lesion (such as an infection) in the affected foot area that precludes the reflex's effective performance. In such situations, 1 of the alternative methods of eliciting the response may be done.</p></div><div id="article-18083.s6"><h2 id="_article-18083_s6_">Equipment</h2><p>The Babinski reflex should be elicited by a dull, blunt instrument that does not cause pain or injury. Sharp objects should be avoided. The dull point of a reflex hammer, a tongue depressor, or a key edge is often utilized.</p></div><div id="article-18083.s7"><h2 id="_article-18083_s7_">Preparation</h2><p>The patient should be relaxed and comfortable. It is best to advise the patient that the sensation may be slightly uncomfortable. Patients may experience both a mildly unpleasant sensation as well as a tickling sensation. Before proceeding, the examiner should ensure that the foot's plantar surface is free of lesions.</p></div><div id="article-18083.s8"><h2 id="_article-18083_s8_">Technique or Treatment</h2><p>To test for the Babinski sign, the instrument is run up the lateral plantar side of the foot from the heel to the toes and across the metatarsal pads to the base of the big toe. Many variations of the Babinski sign have been described. Each of them is designed to elicit dorsiflexion of the big toe. The more common include Chaddock (stimulating under lateral malleolus), Gordon (squeezing calf), Oppenheim (applying pressure to the medial side of the tibia), and Throckmorton (hitting the metatarsophalangeal joint of the big toe). The mechanism by which these alternatives elicit this response is likely similar to the Babinski response. These variations are useful in patients with a significant withdrawal response to the conventional testing for the Babinski reflex.<a class="bk_pop" href="#article-18083.r9">[9]</a><a class="bk_pop" href="#article-18083.r2">[2]</a></p></div><div id="article-18083.s9"><h2 id="_article-18083_s9_">Clinical Significance</h2><p>The examiner watches for the big toe's dorsiflexion (upward movement) and fanning of the other toes. When this occurs, then the Babinski reflex is present. If the toes deviate downward, then the reflex is absent. If there is no movement, this is considered a neutral response and has no clinical significance.<a class="bk_pop" href="#article-18083.r10">[10]</a> The Babinski reflex is indicative of dysfunction of the CST. Often, it is the first indication of spinal cord injury after acute trauma. Care must be exercised in interpreting the results because many patients have significant withdrawal responses to plantar stimulation. When this occurs, 1 of the variations on eliciting a Babinski sign can be utilized. In comatose patients, one may witness a triple flexion response. In this case, one observes flexion of the thigh, leg, and foot dorsiflexion. The triple flexion response represents profound dysfunction of the CST, with a spread of the reflex to the L3 and L2 myotomes. Care must be made to distinguish this from a withdrawal response. The triple flexion response is very stereotyped, whereas the withdrawal response can vary with each stimulation.</p></div><div id="article-18083.s10"><h2 id="_article-18083_s10_">Enhancing Healthcare Team Outcomes </h2><p>Healthcare workers should be aware of other methods of elicitation of the Babinski reflex, especially in patients with an absent toe or infection of the soles. The Hoffman reflex in the upper extremity is considered the nearest equivalent of the Babinski sign. They should also be aware of potentially misleading outcomes if the procedure is performed incorrectly.<a class="bk_pop" href="#article-18083.r11">[11]</a></p></div><div id="article-18083.s11"><h2 id="_article-18083_s11_">Review Questions</h2><ul><li class="half_rhythm"><div>
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<a href="https://www.statpearls.com/articlelibrary/commentarticle/18083/?utm_source=pubmed&utm_campaign=comments&utm_content=18083" ref="pagearea=body&targetsite=external&targetcat=link&targettype=uri">Comment on this article.</a>
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</div></li></ul></div><div class="floats-group" id="article-18083.s12"></div><div class="floats-group" id="article-18083.s13"></div><div id="article-18083.s14"><h2 id="_article-18083_s14_">References</h2><dl class="temp-labeled-list"><dt>1.</dt><dd><div class="bk_ref" id="article-18083.r1">Loo SF, Justin NK, Lee RA, Hew YC, Lim KS, Tan CT. Differentiating Extensor Plantar Response in Pathological and Normal Population. <span><span class="ref-journal">Ann Indian Acad Neurol. </span>2018 Apr-Jun;<span class="ref-vol">21</span>(2):144-149.</span> [<a href="/pmc/articles/PMC6073965/" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pmc">PMC free article<span class="bk_prnt">: PMC6073965</span></a>] [<a href="https://pubmed.ncbi.nlm.nih.gov/30122841" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 30122841</span></a>]</div></dd><dt>2.</dt><dd><div class="bk_ref" id="article-18083.r2">Janecek J, Kushlaf H. <span class="ref-journal">StatPearls [Internet].</span> StatPearls Publishing; Treasure Island (FL): Feb 12, 2023. Gordon Reflex. [<a href="https://pubmed.ncbi.nlm.nih.gov/30020715" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 30020715</span></a>]</div></dd><dt>3.</dt><dd><div class="bk_ref" id="article-18083.r3">Khadilkar SV, Chheda AH. A systematic and quantitative evaluation of plantar stimulation: The effect of type, pattern, force of stimulation in eliciting an accurate plantar response. <span><span class="ref-journal">Clin Neurol Neurosurg. </span>2018 May;<span class="ref-vol">168</span>:83-90.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/29529486" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 29529486</span></a>]</div></dd><dt>4.</dt><dd><div class="bk_ref" id="article-18083.r4">AbuHasan Q, Munakomi S. <span class="ref-journal">StatPearls [Internet].</span> StatPearls Publishing; Treasure Island (FL): Jul 4, 2023. Neuroanatomy, Pyramidal Tract. [<a href="https://pubmed.ncbi.nlm.nih.gov/31424898" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 31424898</span></a>]</div></dd><dt>5.</dt><dd><div class="bk_ref" id="article-18083.r5">Natali AL, Reddy V, Bordoni B. <span class="ref-journal">StatPearls [Internet].</span> StatPearls Publishing; Treasure Island (FL): Aug 14, 2023. Neuroanatomy, Corticospinal Cord Tract. [<a href="https://pubmed.ncbi.nlm.nih.gov/30571044" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 30571044</span></a>]</div></dd><dt>6.</dt><dd><div class="bk_ref" id="article-18083.r6">Drouin E, Drouin G, Péréon Y. The Babinski sign. <span><span class="ref-journal">Lancet Neurol. </span>2017 Mar;<span class="ref-vol">16</span>(3):180.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/28229883" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 28229883</span></a>]</div></dd><dt>7.</dt><dd><div class="bk_ref" id="article-18083.r7">Araújo R, Firmino-Machado J, Correia P, Leitão-Marques M, Carvalho J, Silva M, Nogueira A, Nunes C. The plantar reflex: A study of observer agreement, sensitivity, and observer bias. <span><span class="ref-journal">Neurol Clin Pract. </span>2015 Aug;<span class="ref-vol">5</span>(4):309-316.</span> [<a href="/pmc/articles/PMC5764473/" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pmc">PMC free article<span class="bk_prnt">: PMC5764473</span></a>] [<a href="https://pubmed.ncbi.nlm.nih.gov/29443235" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 29443235</span></a>]</div></dd><dt>8.</dt><dd><div class="bk_ref" id="article-18083.r8">Dafkin C, Green A, Kerr S, Veliotes D, Olivier B, McKinon W. The Interrater Reliability of Subjective Assessments of the Babinski Reflex. <span><span class="ref-journal">J Mot Behav. </span>2016;<span class="ref-vol">48</span>(2):116-21.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/26060926" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 26060926</span></a>]</div></dd><dt>9.</dt><dd><div class="bk_ref" id="article-18083.r9">Acharya AB, Fowler JB. <span class="ref-journal">StatPearls [Internet].</span> StatPearls Publishing; Treasure Island (FL): Jun 26, 2023. Chaddock Reflex. [<a href="https://pubmed.ncbi.nlm.nih.gov/30137839" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 30137839</span></a>]</div></dd><dt>10.</dt><dd><div class="bk_ref" id="article-18083.r10">Sumner AJ. The Babinski sign. <span><span class="ref-journal">J Neurol Sci. </span>2014 Aug 15;<span class="ref-vol">343</span>(1-2):2.</span> [<a href="https://pubmed.ncbi.nlm.nih.gov/24906710" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 24906710</span></a>]</div></dd><dt>11.</dt><dd><div class="bk_ref" id="article-18083.r11">Whitney E, Munakomi S. <span class="ref-journal">StatPearls [Internet].</span> StatPearls Publishing; Treasure Island (FL): Sep 10, 2024. Hoffmann Sign. [<a href="https://pubmed.ncbi.nlm.nih.gov/31424740" ref="pagearea=cite-ref&targetsite=entrez&targetcat=link&targettype=pubmed">PubMed<span class="bk_prnt">: 31424740</span></a>]</div></dd></dl></div><div><dl class="temp-labeled-list small"><dt></dt><dd><div><p class="no_top_margin">
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<b>Disclosure: </b>Aninda Acharya declares no relevant financial relationships with ineligible companies.</p></div></dd><dt></dt><dd><div><p class="no_top_margin">
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<b>Disclosure: </b>Radia Jamil declares no relevant financial relationships with ineligible companies.</p></div></dd><dt></dt><dd><div><p class="no_top_margin">
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<b>Disclosure: </b>Jeffrey Dewey declares no relevant financial relationships with ineligible companies.</p></div></dd></dl></div><div class="bk_prnt_sctn"><h2>Figures</h2><div class="whole_rhythm bk_prnt_obj bk_first_prnt_obj"><div id="article-18083.image.f1" class="figure bk_fig"><div class="graphic"><img src="/books/NBK519009/bin/BabinskiSign.jpg" alt="Image BabinskiSign" /></div><div class="caption"><p>Pathological Babinski Sign in an Adult Medicus of Borg, <a href="https://commons.wikimedia.org/wiki/File:BabinskiSign.jpg" ref="pagearea=body&targetsite=external&targetcat=link&targettype=uri">Public Domain</a>, via Wikimedia Commons</p></div></div></div><div class="whole_rhythm bk_prnt_obj"><div id="article-18083.image.f2" class="figure bk_fig"><div class="graphic"><img src="/books/NBK519009/bin/Lawrence_1960_20.4__x1x.jpg" alt="Image Lawrence_1960_20.4__x1x" /></div><div class="caption"><p>Babinski Reflex Ben Pansky, Public <a href="https://commons.wikimedia.org/w/index.php?search=ben+pansky&title=Special:MediaSearch&go=Go&type=image" ref="pagearea=body&targetsite=external&targetcat=link&targettype=uri">Domain</a>, via Wikimedia Commons</p></div></div></div></div></div></div>
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