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عمومی::
استخوان کف دست، استخوان متاکارپ
The proximal row articulates directly with the bones of the forearm, with the distal row articulating with the base of the five metacarpal bones.
The metacarpal bones form the palm of the hand, five bones altogether.
Flexor Pollicis Brevis lies next to the abductor, and it flexes the thumb at the metacarpophalangeal joint as well as the flexing and rotation of the first metacarpal bone where the metacarpal bone of the thumb joins the carpal bones of the wrist, the carpometacarpal joint.
Its tendon is inserted radially into the whole length of the metacarpal bone of the thumb.
Its tendon is inserted into the whole ulnar length of the metacarpal bone of the little finger.،bone; 3, third carpal bone; 4, fourth carpal bone; A, accessory carpal bone; I, intermediate carpal bone; L, lateral; M, medial; M3, third metacarpal bone; M4, fourth metacarpal bone; P, palmar; R, radial carpal bone; U, ulnar carpal bone.
For a lateromedial projection, the x-ray beam strikes the lateral surface of the carpus and the dorsal and palmar edges of the carpus will be projected. 2, Second carpal bone; 3, third carpal bone; 4, fourth carpal bone; A, accessory carpal bone; D, dorsal; I, intermediate carpal bone; M, medial; M3, third metacarpal bone; M4, fourth metacarpal bone; P, palmar; R, radial carpal bone; U, ulnar carpal bone.
For a dorsolateral/palmaromedial radiograph, the x-ray beam strikes the dorsolateral surface of the carpus, and the dorsomedial and palmarolateral edges of the carpus will be projected. 2, Second carpal bone; 3, third carpal bone; 4, fourth carpal bone; A, accessory carpal bone; D, dorsal; DM, dorsomedial; I, intermediate carpal bone; L, lateral; M, medial; M3, third metacarpal bone; M4, fourth metacarpal bone; P, palmar; PL, palmarolateral; PM, palmaromedial; R, radial carpal bone; U, ulnar carpal bone.
For a dorsomedial/palmarolateral projection, the x-ray beam strikes the dorsomedial surface of the carpus, and the dorsolateral and palmaromedial edges of the carpus will be projected. 2, Second carpal bone; 3, third carpal bone; 4, fourth carpal bone; A, accessory carpal bone; D, dorsal; DL, dorsolateral; I, intermediate carpal bone; L, lateral; M, medial; M2, second metacarpal bone; M3, third metacarpal bone; P, palmar; PL, palmarolateral; PM, palmaromedial; R, radial carpal bone; U, ulnar carpal bone.
There is a large region of bone lysis in the palmarodistal aspect of the third metacarpal bone (black arrows).
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