Скачать с ютуб DEMONSTRATION OF BABINSKI REFLEX AND ITS VARIANTS в хорошем качестве

DEMONSTRATION OF BABINSKI REFLEX AND ITS VARIANTS

Demonstration of Babinski reflex and its variants like Gonda-Stransky reflex, Oppenheim reflex, Schaeffer reflex, Gordon reflex and Chaddock reflex. Normal plantar response : Plantar flexion on S1 stimulation along lateral aspect of the sole Components of babinski reflex - Contraction of EHL - Fanning of other fingers - dorsiflexion at ankle - knee , hip flexion - contraction of tensor fascia lata if plantar response is extensor it is called "Positive" babinski , however there is no " Negative babinski" Reflexogenic zone - S1 dermatome Pathophysiology : The descending corticospinal tract usually has an inhibitory effect on the alpha motor neuron at the spinal cord where it synapses. On stimulating the S1 dermatome impulses travel to the spinal cord via tibial and peroneal nerve and cause stimulation of the S1 myotome leading to plantar flexion. In case of damage to the cortico-spinal tract , the inhibition over the anterior horn cells is lost and impulse travels beyond S1 to L4/L5 leading to stimulation of toe extensors (extensor hallucis longus, extensor digitorum longus) via the deep peroneal nerve. Technique : Be careful to avoid NOCICEPTIVE stimuli as they lead to stimulation of pain receptors which can cause withdrawal - Elicit using a dull end of knee hammer/key - Gently stroke the lateral aspect of the sole - Observe for the response - avoid painful stimulus Types of Babinski: -Minimal Babinski sign : Contraction of hamstring muscles and tensor faciae latae. -Pseudo Babinski sign : One may encounter this type of response in sensitive individuals, plantar hyperaesthesia, and choreo-athetosis due to hyperkinesis. True Babinski can be clinically distinguished from the false Babinski by the contraction of hamstring muscles in the former, and failure to inhibit the extensor response by pressure over the base of the great toe. -Exaggerated Babinski sign : It can either be in the form of 'flexor spasm' or 'extensor spasm', depending upon the muscles i.e. whether flexors or extensors, have excess of tone. Flexor spasms occur in spinal cord disease, bilateral upper motor neuron lesion at a supraspinal level, multiple sclerosis and subacute combined degeneration of the cord. Extensor spasm occurs in patients with corticospinal tract lesion when the posterior column function is normal. -Inversion of plantar reflex : If the short flexors of the toe are paralysed or flexor tendons are severed accidentally, an extensor response may be obtained. -Tonic Babinski reflex : Characterised by slow prolonged contraction of extensors of toe, seen in frontal lobe lesions and extrapyramidal involvement. -Crossed extensor response/bilateral Babinski sign : Unilateral stimulation produces bilateral Babinski in patients with bilateral cerebral disease and spinal cord disease. -Spontaneous Babinski : In infants and children following manipulation of the foot, and in patients with extensive pyramidal tract diseases, passive extension of the knee or passive flexion of the hip and the knee, may produce a positive Babinski sign THE WHITE ARMY To make studies more interesting and enjoyable, we are constantly trying to share most important tables, charts, diagrams, mnemonics, scoring systems, diagnostic criterias, motivating quotes and other useful study materials on ANDROID APP - All in 1 Free Medical Education App for Medicos https://play.google.com/store/apps/de... OFFICIAL WEBSITE - 1 click solution for medical study resources thewhitearmy.in INSTAGRAM PAGE @the_whitearmy   / the_whitearmy   MEGA ARMOURY OF THE WHITE ARMY wherein all the basic books for MBBS ,PG Entrance Exam, USMLE, cilincal case proformas, previous Question papers, previous EPIGNOSIS,Videos, Useful Charts, mnemonics etc are available. https://mega.nz/folder/2z4nGaRa#xNCxo... FACEBOOK DISCUSSION GROUP   / 205751564130519   TELEGRAM GROUP PDFs, PPTs and other study materials stored for easy, convenient access and download. https://t.me/whitearmyofmedicos ZOOM link for all the sessions: https://us02web.zoom.us/j/6766868331?... ID: 676 686 8331 Password: whitearmy Anyone interested to present clinical cases, willing to join whatsapp discussion group, can send a mail to [email protected] #StudyManiaInSocialMedia #HelpOthersToHelpOurselves #StudyEnjoyingEnjoyStudying DISCLAIMER THE WHITE ARMY does not own or claim to own any of the media used in the following video/stream. The media belong to their respective owners who may have copyright over them.The media have been taken from various sources and are used for medical educational purposes only. The following video/stream may contain images that may not be suitable for all audiences, viewer discretion is advised.