Strike the tendon with a single, brisk, stroke.When the muscle shortens, you should be able to both see and feel the cord like tendon, confirming its precise location. To easily locate the tendon, ask the patient to contract the muscle to which it is attached.Place the extremity in a positioned that allows the tendon to be easily struck with the reflex hammer. The tendon attached to the muscle(s) which is/are to be tested must be clearly identified.The muscle group to be tested must be in a neutral position (i.e.Lower motor neuron lesions (eg affecting the anterior horn cell, spinal root or peripheral nerve) depress reflexes: upper motor neuron lesions increase the reflexes. Reflex Testing Deep Tendon (muscle stretch) Reflexes Įvaluates afferent nerves, synaptic connections within the spinal cord, motor nerves, and descending motor pathways. Deep reflexes: Biceps, Brachioradialis, Triceps, Knee jerk, and ankle jerk.Superficial reflexes: Plantar response, abdominal reflex, cremastic reflex, corneal reflex.Polysynaptic ie multiple interneurons (also called relay neurons) that interface between the sensory and motor neurons in the reflex pathway.Examples of monosynaptic reflex arcs in humans include the patellar reflex and the Achilles reflex. Monosynaptic ie contain only two neurons, a sensory and a motor neuron.Reflex arcs act on an impulse before that impulse reaches the brain. The reflex is an automatic response to a stimulus that does not receive or need conscious thought as it occurs through a reflex arc. Spinal Reflex/The Reflex Arc Ī reflex is an involuntary and nearly instantaneous movement in response to a stimulus. 2.5 Significance of Superficial reflexes in Physiotherapy.2.1 Deep Tendon (muscle stretch) Reflexes.
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