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Showing posts from February, 2022

SPECIFICITY VS SENSITIVITY OF TESTS WITH 10 EXAMPLES.

     SPECIFICITY VS SENSITIVITY OF A TEST   Specificity Sensitivity Definition It is  the percentage of people who test negative for a specific disease among a  group of people who do not have the disease  It is the percentage of people who test positive for a specific disease among a group of people who have the disease Easy to understand concept: The ability of a test to correctly identify people without the disease. The ability of a test to correctly identify patients with a disease. Other name true negative rate (TNR) true positive rate (TPR) Interpretation The person does NOT have the targeted disorder. The person has the targeted disorder. Statistical Outcome True Negative True Positive The Rule Rule In (SpIn) SpPin : A te...

WHAT IS WRIST DROP? MECHANISM OF INJURY, SYMPTOMS AND TREATMENT.

  Introduction: The radial nerve is a nerve that arises from the posterior cord of the brachial plexus and supplies the posterior side of the upper limb. Its nerve root is from C5 to C8 and T1.  Wrist drop is a medical condition in which the entrapment or compression of  RADIAL NERVE  leads to decreased or blocked impulses to the extensor muscles of the arm, forearm and hand namely,   It supplies the under mentioned muscles. Extensors of the elbow:   Triceps Brachii (medial and lateral head) Brachioradialis Supinator muscle  Anconeus Extensors of the wrist: Extensor carpi radialis longus Extensor carpi radialis brevis Extensor carpi ulnaris Extensors of the Digits and thumb: Extensor digitorum Extensor pollicis longus Extensor pollicis Brevis Extensor indices Extensor digiti minimi Abductor pollicis longus MECHANISM OF INJURY IN WRIST DROP: Radial nerve can be compressed or entrapped in FOUR major locations in the upper extremity that may lead to wrist...

CAN MUSCLE STRENGTH IMBALANCE CAUSE HEADACHE? 5 SIMPLE EXERCISES TO RESOLVE TENSION HEADACHE.

  Ever had a persistent headache when you wake up without even starting your day even while you are in your 20's or 30's? The pain persists or may be temporarily relieved by the use of pain killers but then reappears. Ever thought the reason behind it? How many of you guys have worked to get rid of it? Tension Headache: Tension headache is a common type of headache found in 2 of 3 men in the US, and is more commonly found in women than men. It is caused by stiffness in neck and head muscles namely; Suboccipital muscle Trapezius muscle Levator scapulae Sternocleidomastoid muscle Temporalis muscle Superior oblique Masseter muscle AREAS OF PAIN: The particular areas of pain in tension headache involves: Upper back neck base of head ears jaws across the forehead (above the eyes) Risk Factors and Causes: Some of the risk factors that are involved in leading cause of Tension headache are as follows: Depression, stress and anxiety, causing muscles to stiffen by continuous increase in ...