The Jendrassik maneuver is a medical maneuver wherein the patient clenches the teeth, flexes both sets of fingers into a hook-like form, and interlocks those sets of fingers together. The tendon below the patient's knee is then hit with a reflex hammer to elicit the patellar reflex. The elicited response is compared with the reflex result of the same action when the maneuver is not in use. Often a larger reflex response will be observed when the patient is occupied with the maneuver: "A weak or apparently missing reflex could be triggered by afferent activity resulting from such muscle tension. This is the true explanation for the maneuver, not a diversion of the patient’s attention – a misconception that can be heard even today."[1] This effect was first observed in the late 19th century by Hungarian physician Ernő Jendrassik, after whom it was named.
The Jendrassik maneuver to reinforce knee-jerk.
This maneuver is particularly useful in that even if the patient is aware of the maneuver's purpose, it still functions properly.[2]
The maneuver can also be used to distract patients when performing other tests or procedures and any suitable distraction may be used; for example when looking for Romberg's sign.[3]
^Koehler, Peter J.; Bruyn, George W.; Pearce, John M. S. (2000). Neurological Eponyms. Oxford University Press. p. 146. ISBN9780198030591. Retrieved November 11, 2017.
^Vereeck L, Truijen S, Wuyts FL, Van de Heyning PH (January 2007). "The dizziness handicap inventory and its relationship with functional balance performance". Otology & Neurotology. 28 (1): 87–93. doi:10.1097/01.mao.0000247821.98398.0d. PMID 17195749. S2CID 9373805.
Further readingedit
Niechwiej-Szwedo E, González E, Bega S, Verrier M, Wong A, Steinbach M (2006). "Proprioceptive role for palisade endings in extraocular muscles: evidence from the Jendrassik Maneuver". Vision Res. 46 (14): 2268–79. doi:10.1016/j.visres.2005.12.006. PMID 16445961.
Tsuruike M, Koceja D, Yabe K, Shima N (2003). "Age comparison of H-reflex modulation with the Jendrássik maneuver and postural complexity". Clin Neurophysiol. 114 (5): 945–53. doi:10.1016/S1388-2457(03)00039-7. PMID 12738442. S2CID 24945591.
Zehr E, Stein R (1999). "Interaction of the Jendrássik maneuver with segmental presynaptic inhibition". Exp Brain Res. 124 (4): 474–80. doi:10.1007/s002210050643. PMID 10090659. S2CID 6650853.
External linksedit
This medical treatment–related article is a stub. You can help Wikipedia by expanding it.
jendrassik, maneuver, medical, maneuver, wherein, patient, clenches, teeth, flexes, both, sets, fingers, into, hook, like, form, interlocks, those, sets, fingers, together, tendon, below, patient, knee, then, with, reflex, hammer, elicit, patellar, reflex, eli. The Jendrassik maneuver is a medical maneuver wherein the patient clenches the teeth flexes both sets of fingers into a hook like form and interlocks those sets of fingers together The tendon below the patient s knee is then hit with a reflex hammer to elicit the patellar reflex The elicited response is compared with the reflex result of the same action when the maneuver is not in use Often a larger reflex response will be observed when the patient is occupied with the maneuver A weak or apparently missing reflex could be triggered by afferent activity resulting from such muscle tension This is the true explanation for the maneuver not a diversion of the patient s attention a misconception that can be heard even today 1 This effect was first observed in the late 19th century by Hungarian physician Erno Jendrassik after whom it was named The Jendrassik maneuver to reinforce knee jerk This maneuver is particularly useful in that even if the patient is aware of the maneuver s purpose it still functions properly 2 The maneuver can also be used to distract patients when performing other tests or procedures and any suitable distraction may be used for example when looking for Romberg s sign 3 References edit Pasztor E March 1 2004 Erno Jendrassik 1858 1921 Journal of Neurology 251 3 366 367 doi 10 1007 s00415 004 0394 3 ISSN 0340 5354 PMID 15015025 S2CID 26450843 Koehler Peter J Bruyn George W Pearce John M S 2000 Neurological Eponyms Oxford University Press p 146 ISBN 9780198030591 Retrieved November 11 2017 Vereeck L Truijen S Wuyts FL Van de Heyning PH January 2007 The dizziness handicap inventory and its relationship with functional balance performance Otology amp Neurotology 28 1 87 93 doi 10 1097 01 mao 0000247821 98398 0d PMID 17195749 S2CID 9373805 Further reading edit Niechwiej Szwedo E Gonzalez E Bega S Verrier M Wong A Steinbach M 2006 Proprioceptive role for palisade endings in extraocular muscles evidence from the Jendrassik Maneuver Vision Res 46 14 2268 79 doi 10 1016 j visres 2005 12 006 PMID 16445961 Tsuruike M Koceja D Yabe K Shima N 2003 Age comparison of H reflex modulation with the Jendrassik maneuver and postural complexity Clin Neurophysiol 114 5 945 53 doi 10 1016 S1388 2457 03 00039 7 PMID 12738442 S2CID 24945591 Zehr E Stein R 1999 Interaction of the Jendrassik maneuver with segmental presynaptic inhibition Exp Brain Res 124 4 474 80 doi 10 1007 s002210050643 PMID 10090659 S2CID 6650853 External links editDiagram nbsp This medical treatment related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Jendrassik maneuver amp oldid 1122054160, wikipedia, wiki, book, books, library,
