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Learn the proper technique for eliciting deep tendon reflexes; Know the root levels for deep tendon reflexes; Know the superficial and visceral reflexes
By convention the deep tendon reflexes are graded as follows: 0 = no response; always abnormal. 1+ = a slight but definitely present response; may or may not be normal. 2+ = a brisk response; normal. 3+ = a very brisk response; may or may not be normal. 4+ = a tap elicits a repeating reflex (clonus); always abnormal.
Deep tendon (muscle stretch) reflex testing evaluates afferent nerves, synaptic connections within the spinal cord, motor nerves, and descending motor pathways.
Deep tendon reflexes or, more accurately, the 'muscle stretch reflex' can aid in evaluating neurologic disease affecting afferent nerves, spinal cord synaptic connections, motor nerves, and descending motor pathways.
This Stanford Medicine 25 video was created in conjunction with Stanford's AIM lab teaching the examination of the deep tendon reflexes. The Stanford Medicin...
This article will focus on the “deep tendon reflexes” which are more appropriately named — and will be referred to herein — as muscle stretch reflexes (MSR). MSR grading is based on a clinician’s subjective evaluation of amplitude, with a wide range of what can be normal.
Deep tendon reflexes are important clinical assessments that provide valuable information about the integrity of the nervous system. Through the evaluation of these reflexes, healthcare professionals can gain insights into nerve function, diagnose neurological conditions, and monitor disease progression.
Assessment of deep tendon reflexes (DTRs) is a skill we use daily in our clinical practice. Yet, the literature provides scant information on the physiology, proper technique, and research issues associated with deep reflexes.
Although the reflex has a sensory and motor component, deep tendon reflex testing primarily assesses the integrity of the motor system. This reflex provides information on upper and lower motor neurons.
Deep tendon reflexes are involuntary muscle contractions that occur when a specific tendon is stretched. They are also known as myotatic reflexes and are part of the neurological assessment. The spinal cord and the brain control these reflexes.