Label the specific carpal bones

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Mnemonics of the carpal bones are numerous and useful for memorizing the order and location of the bones. Some mnemonics name the carpal bones in a circle, starting with the proximal row from the scaphoid towards the pinky small finger and then the distal row starting from the hamate towards the thumb:. Other mnemonics describe the position of the carpal bones from the radial to the ulnar side, for both rows, proximal then distal:. Updating… Please wait. Unable to process the form.

Label the specific carpal bones

The bones of the hand provide support and flexibility to the soft tissues. They can be divided into three categories:. The carpal bones are a group of eight, irregularly shaped bones. They are organised into two rows: proximal and distal. Collectively, the carpal bones form an arch in the coronal plane. A membranous band, the flexor retinaculum, spans between the medial and lateral edges of the arch, forming the carpal tunnel. In the distal row, all of the carpal bones articulate with the metacarpals. The scaphoid bone of the hand is the most commonly fractured carpal bone — typically by falling on an outstretched hand FOOSH. In a fracture of the scaphoid, the characteristic clinical feature is pain and tenderness in the anatomical snuffbox. Patients with a missed scaphoid fracture are likely to develop osteoarthritis of the wrist in later life. Fig 5 — The blood supply to the scaphoid bone runs from distal to proximal. The metacarpal bones articulate proximally with the carpals, and distally with the proximal phalanges.

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The bones of the hand provide support and flexibility to the soft tissues. They can be divided into three categories:. The carpal bones are a group of eight, irregularly shaped bones. They are organised into two rows: proximal and distal. Collectively, the carpal bones form an arch in the coronal plane. A membranous band, the flexor retinaculum, spans between the medial and lateral edges of the arch, forming the carpal tunnel. In the distal row, all of the carpal bones articulate with the metacarpals.

Label the specific carpal bones

The carpal bones are a group of short bones [24] in the human hand that forms the wrist along with the distal ends of the radius and ulna [1]. Hence, they are also known as wrist bones. Collectively known as the carpus, they individually articulate with the long bones in the lower arm radius and ulna and the metacarpals to make up the wrist joint. Each carpal bone is vital in forming the carpus or wrist joint, which is the key to hand movement [14], allowing us to do anything from writing, typing, and eating to holding anything in hand. The carpal bones are the connection between the forearm and hand and are the key to torque generation, which provides grip strength to humans [15]. The carpal bones in the human wrist are arranged in two rows — the proximal carpal row, articulating with the lower arm bones radius and ulna, and the distal carpal row, articulating with the metacarpals. So, the scaphoid being the first bone in the proximal row means it articulates with the radius. The trapezium, the first bone in the distal row, articulates with the first metacarpal metacarpal of the thumb , while the trapezoid second bone in the distal row articulates with the second metacarpal and so on [7].

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Hand and wrist joints. Follow NCBI. In a fracture of the scaphoid, the characteristic clinical feature is pain and tenderness in the anatomical snuffbox. The four fingers on the hand are used for the outermost performance; these four digits can be folded over the palm which allows the grasping of objects. Sometimes the scaphoid, triquetrum, and pisiform bones are divided into two. The proximal carpals are referred to as the radiale , intermedium , and ulnare , after their proximal articulations, and are homologous with the scaphoid, lunate, and triquetral bones respectively. The remaining bones are simply numbered, as the first to fourth centralia singular: centrale , and the first to fifth distal carpals. The hand is said to be in straight position when the third finger runs over the capitate bone and is in a straight line with the forearm. Sandow MJ. Some mnemonics name the carpal bones in a circle, starting with the proximal row from the scaphoid towards the pinky small finger and then the distal row starting from the hamate towards the thumb:. The carpal bones are a group of eight, irregularly shaped bones. Part II: The intraosseous vascularity. Starting from the proximal row, the scaphoid, named for its boat-like appearance, forms the radial border of the proximal carpal row. By System:.

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The adductor pollicis takes its origin from the capitate and the second and third metacarpal bones. In contrast, the distal row is more rigid as its transverse arch moves with the metacarpals. Similar articles in PubMed. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Cancel Submit. Anatomical hierarchy Veterinary anatomy. Help Accessibility Careers. See also: Carpus and tarsus of land vertebrates. Mnemonics , Anatomy. Other mnemonics describe the position of the carpal bones from the radial to the ulnar side, for both rows, proximal then distal:. Figure Normal posteroanterior radiograph of wrist joint showing the normal alignment of the carpal bones Contributed by Vivek Tiwari. Almost all carpals except the pisiform have six surfaces.