Anatomy thumb

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The thumb is the first digit finger of the hand. When a person is standing in the medical anatomical position where the palm is facing to the frontthe thumb is the outermost digit. The Medical Latin English noun for thumb is pollex compare hallux for big toeand the corresponding adjective for thumb is pollical.

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The thumb is the first of the hand's five digits, but it is typically not referred to as a finger. The thumb possesses a unique and wide range of motion not shared by the hand's other digits. Not only does it bend its knuckle, but the tip of the thumb can touch the tips of the fingers.

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Thumbalso called pollexshort, thick first digit of the human hand and of the lower-primate hand and foot. It differs from other digits in having only two phalanges tubular bones of the fingers and toes. The thumb also differs in having much freedom of movement and being opposable to tips of other digits.

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A problem with the thumb can therefore cause significant hand dysfunction. The priorities in the thumb are that: 1. The thumb is Stable 2. The thumb is Painfree.

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The hand consists of the wrist, palm and fingers. Movements of the hand are controlled by muscles in the forearm extrinsic muscles as well as muscles within the hand itself intrinsic muscles. The movements of the hand and of other body structures are usually described in anatomical terms.

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Did you know that the tendons attached to your thumb run all the way up your forearm? There are four thumb tendons:. Learn more about anatomy of the fingers, hand, wrist, arm and shoulder at www.

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The joints in our hands are made up of cartilage surfaces that cap the bones. Cartilage is a smooth surface that allows for gliding. When cartilage is healthy, there is a cushioning effect of the cartilage that absorbs and evens out the forces across the joint.

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Joints are cartilage surfaces that connect bones to each other. This cartilage allows our bones to glide smoothly against one another, allowing us painless movement. There are four joints in each finger, totaling 20 joints in each hand!

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Trigger finger is a condition that causes pain, stiffness, and a sensation of locking or catching when you bend and straighten your finger. The flexor tendons are long cord-like structures that attach the muscles of the forearm to the bones of the fingers. When the muscles contract, the flexor tendons allow the fingers to bend.

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