Question

The loss or diminution of the Achilles tendon reflex seen in sciatica is____

Answer 1

The loss or diminution of the Achilles tendon reflex seen in sciatica is due to the compression or irritation of the sciatic nerve.

The sciatic nerve is the longest nerve in the body, and it runs from the lower back down through the buttocks and into the legs. It provides motor and sensory functions to the lower limbs.

When the sciatic nerve is compressed or irritated, as is the case in sciatica, it can lead to a variety of symptoms, including pain, numbness, tingling, and muscle weakness.

The Achilles tendon reflex is a reflex action that occurs when the Achilles tendon at the back of the ankle is tapped. This reflex is controlled by the S1 and S2 nerve roots, which are part of the sciatic nerve.

In sciatica, the compression or irritation of the sciatic nerve can disrupt the proper functioning of the S1 and S2 nerve roots, leading to a loss or diminution of the Achilles tendon reflex. This means that when the Achilles tendon is tapped, there may be little or no response or a reduced reflex compared to normal.

It is important to note that the loss or diminution of the Achilles tendon reflex alone is not sufficient to diagnose sciatica. It is just one of the possible signs or symptoms that can occur in individuals with sciatica. If you suspect you have sciatica or are experiencing any symptoms, it is recommended to consult a healthcare professional for a proper diagnosis and appropriate treatment.

Answer 2

The loss or diminuation of the Achilles tendon reflex in sciatica is due to the impairment of the sciatic nerve or its spinal nerve contributors, affecting the reflex arc involving the S1 or S2 nerve roots.

Step-by-step explanation:

The loss or diminution of the Achilles tendon reflex seen in sciatica is a symptom typically resulting from compression or inflammation of the sciatic nerve or its contributing spinal nerves. This reflex, also known as the deep tendon reflex, is elicited through deep stimulation of the Achilles tendon.

The sciatic nerve is a systemic nerve from the sacral plexus that is a combination of the tibial and fibular nerves and extends across the hip joint and gluteal region into the upper posterior leg. In sciatica, the nerve's impairment can lead to a reduced or absent Achilles tendon reflex, as the neural pathways responsible for this reflex are disrupted.

As part of the neurological examination, the integrity of the reflex arc is assessed. If the reflex is diminished or lost, as in the case of sciatica, it may indicate a problem with the S1 or S2 nerve roots which form part of the sciatic nerve. This might occur due to intervertebral disc herniation, spinal stenosis, or nerve impingement, and can affect the motor neurons that lead to gastrocnemius and soleus muscle contraction during the reflex.