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The fifth metacarpal bone (metacarpal bone of the little finger or pinky finger) is the most medial and second-shortest of the metacarpal bones. Surfaces It ...
The word "pinkie" is derived from the Dutch word pink, meaning "little finger".. The earliest recorded use of the term "pinkie" is from Scotland in 1808. [1] The term (sometimes spelled "pinky") is common in Scottish English [2] and American English, [3] and is also used extensively in other Commonwealth countries such as New Zealand, Canada, and Australia.
The ring metacarpal is somewhat more mobile while the fifth metacarpal is semi-independent. [1] Each metacarpal bone consists of a body or shaft, and two extremities; the head at the distal or digital end (near the fingers), and the base at the proximal or carpal end (close to the wrist).
Metacarpal neck fracture of the little finger, scrapper's fracture, [1] bar room fracture, street fighter's fracture [1] Boxer's fracture of the 5th metacarpal head from punching a wall: Specialty: Emergency medicine, orthopedics: Symptoms: Pain, depressed knuckle [2] Causes: Hitting an object with a closed fist [3] Diagnostic method
The metacarpophalangeal joints (MCP) are situated between the metacarpal bones and the proximal phalanges of the fingers. [1] These joints are of the condyloid kind, formed by the reception of the rounded heads of the metacarpal bones into shallow cavities on the proximal ends of the proximal phalanges. [1]
The intrinsic muscle groups are the thenar and hypothenar (little finger) muscles; the interossei muscles (four dorsally and three volarly) originating between the metacarpal bones; and the lumbrical muscles arising from the deep flexor (and which are special because they have no bony origin) to insert on the dorsal extensor hood mechanism.
little finger, pinky finger, small finger, baby finger, or 5th digit The thumb (connected to the first metacarpal bone and trapezium ) is located on one of the sides, parallel to the arm. A reliable way of identifying human hands is from the presence of opposable thumbs.
Each attaches proximally at the head of the metacarpal bone, and distally at the base of the phalynx. Each extends obliquely in a palmar direction from its proximal attachment to its distal attachment. [2] The collateral ligaments allow spreading our the fingers with an open hand but not with the hand closed into a fist.