The thumb is the first digit of the hand.When a person is standing in the medical anatomical position (where the palm is facing to the front), the thumb is the outermost digit. The Medical Latin English noun for thumb is pollex (compare hallux for big toe), and the corresponding adjective for thumb is pollical.
Feb 20, 2019 · A swollen thumb may be painful and affect your day-to-day activities. Causes for a swollen thumb can arise from a bacterial infection within the nail, trauma from a injury that is affecting the thumb bones, or inflammation of the thumb joints. A sprained thumb and arthritis are the most common culprits for a swollen thumb. Read below for more information on causes and treatment options. A thumb sprain is simply a tear or stretching of any of the ligaments in the thumb. The thumb consists of the phalanges bones which connect to the metacarpal bone at the base of the thumb. This joint is known as the metacarpophalangeal joint. Diagnosis. During a physical exam, your doctor will ask about your symptoms and look for noticeable swelling or lumps on your joints. Your doctor might hold your joint while moving your thumb, with pressure, against your wrist bone. These branches twist and interlock in a complicated plexus, then become well-defined nerves called the median, radial, and ulnar nerve. While all three nerves are involved with moving the thumb, only the radial and median nerve are involved with sensation to the thumb.
Thumbs | Definition of Thumbs at Dictionary.com
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