May 26, 2023
The carpal tunnel syndrome is caused due to pressure on the median nerve. On the hand's palm side, a small opening called the carpal tunnel is encircled by bones and ligaments. Numbness, tingling, and weakness in the hand and arm are possible signs that the median nerve is compressed. Carpal tunnel syndrome can have its roots in the anatomy of the wrist, health issues, and perhaps repeated hand motions. The tingling and numbness are typically reduced with appropriate care, and the function of the wrist and hand is also recovered.
Read this blog further to get a quick overview of this important topic for anatomy and ace your NEET PG/NExT exam preparation.
Through the carpal tunnel in the wrist, the median nerve runs from the forearm to the hand. It provides sensation to the thumb and other fingers on the palm side, with the exception of the little finger. By delivering nerve signals to the muscles surrounding the thumb's base, it also functions as a motor function.
Any reason that compresses or irritates the median nerve in the carpal tunnel region might cause carpal tunnel syndrome. A fractured wrist and rheumatoid arthritis-related edema and inflammation can narrow the carpal tunnel and irritate the nerve.
It helps to test the compression of the median nerve. On compression of the median nerve, more tingling occurs
On hitting the regenerating nerve (median nerve), if tingling sensation increases then it is a positive tinel’s sign.
Due to prolonged carpal tunnel syndrome (median nerve injury) there is Thenar atrophy. But the thumb is in adduction deformity due to overactive adductor pollicis which is supplied by the ulnar nerve.
The patient is asked to put one hand flat on the table with the palm surface facing upwards, and the patient is asked to touch the pen of the examiner by abducting his thumb. If the patient is not able to abduct his thumb, this means there is median nerve damage.
It can be challenging to avoid carpal tunnel syndrome. Prevention can be difficult because there are so many various actions in a person's daily life that can contribute to the illness. Workplace adjustments, including adequate seating and wrist and hand placement, can help reduce some risk factors for carpal tunnel syndrome. Additional preventive measures include:
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