Results 1 to 2 of 2
  1. #1

    Default Download video of Supine Assessment of Reflexes

    Reflex testing incorporates an assessment of the function and interplay of both sensory and motor pathways. It is simple yet informative and can give important insights into the integrity of the nervous system at many different levels.

    Physiology of Reflexes

    Assessment of reflexes is based on a clear understanding of the following principles and relationships:

    1. Tendons connect muscles to bones, usually crossing a joint. When the muscle contracts, the tendon pulls on the bone, causing the attached structure to move.
    2. When the tendon is struck by the reflex hammer, stretch receptors contained within it generate an impulse that is carried via sensory nerves to the spinal cord. At this juncture, the message is transmitted across a synapse to an appropriate lower motor neuron. An upper motor neuron, whose cell body resides in the brain, also provides input to this synapse.
    3. The signal then travels down the lower motor neuron to the target muscle.
    4. The sensory and motor signals that comprise a reflex arc travel over anatomically well characterized pathways. Pathologic processes affecting discrete roots or named peripheral nerves will cause the reflex to be diminished or absent. This can obviously be of great clinical significance. The Achilles Reflex (see below) is dependent on the S1 and S2 nerve roots. Herniated disc material (a relatively common process) can put pressure on the S1 nerve root, causing pain along its entire distribution (i.e. the lateral aspect of the lower leg). If enough pressure if placed on the nerve, it may no longer function, causing a loss of the Achilles reflex. In extreme cases, the patient may develop weakness or even complete loss of function of the muscles innervated by the nerve root, a medical emergency mandating surgical decompression. The specific nerve roots that comprise the arcs are listed for each of the major reflexes described below.
    5. A normal response generates an easily observed shortening of the muscle. This, in turn, causes the attached structure to move.
    6. The vigor of contraction is graded on the following scale:

    0
    No evidence of contraction
    1+
    Decreased, but still present (hypo-reflexic)
    2+
    Normal
    3+
    Super-normal (hyper-reflexic)
    4+
    Clonus: Repetitive shortening of the muscle after a single stimulation

    For Download the video click the link
    Supine Assessment of Reflexes










  2. #2
    Junior Member
    Join Date
    Jan 2011
    Posts
    1
    Country

    Country

    Occupation
    Gibraltar

    Default Privet!

    Hello, world!

Similar Threads

  1. Download video of Assessment of Reflexes
    By Medical Videos in forum Neurosurgery Videos
    Replies: 0
    Last Post: 01-02-2009, 08:35 PM
  2. Download video of Assessment of Coordination
    By Medical Videos in forum Neurosurgery Videos
    Replies: 0
    Last Post: 01-02-2009, 08:34 PM
  3. Download video of Assessment of the Motor System: Lower Extremities
    By Medical Videos in forum Neurosurgery Videos
    Replies: 0
    Last Post: 01-02-2009, 08:33 PM
  4. Download video of Assessment of the Posterior Thorax
    By Medical Videos in forum Cardio-thoracic & Vascular Videos
    Replies: 0
    Last Post: 01-02-2009, 07:17 PM
  5. Download video of Assessment of the Chest, Respirations, and the Posterior Thorax
    By Medical Videos in forum Cardio-thoracic & Vascular Videos
    Replies: 0
    Last Post: 01-02-2009, 07:16 PM

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
About us
Medical Educational Site for Medical Students and Doctors Contains Free Medical Videos ,Atlases,Books,Drug Index ,Researches ,Health and Medical Technology news.
  • Privacy Policy
  • Join us
    Powered by vBulletin® Version 4.2.0 Copyright © 2015
  • vBulletin®
  • Solutions, Inc. All rights reserved. vBulletin Metro Theme by
  • PixelGoose Studio