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What are the different types of hand bones?
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Mar 31, 2024 · The bones of the hand provide support and movement to the soft tissues. They can be categorised into three different types: Carpal bones (proximal) – a set of eight irregularly shaped bones. They are located in the area of the wrist. Metacarpals – a set of five bones, each one related to a digit. They are located in the area of the palm.
- Carpal Bones
- Metacarpal Bones
- Phalanges
- Joints and Articulations
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The human wrist comprises 8 uniquely-shaped irregular bonesarranged in two rows, with the first four in the proximal row and the next four in the distal row. Here are their names: 1. Scaphoid 2. Lunate 3. Triquetrum 4. Pisiform 5. Trapezium 6. Trapezoid 7. Capitate 8. Hamate Together, these bones connect the lower arm to the hand and fingers as the...
These bones form the middle part, the back of the hand or palm area. There are 5 metacarpal bones in the human body, with each of these long boneshaving a base, shaft, and head. Their proximal end articulates with the distal row of carpal bones. The first to the fifth metacarpal is associated with the respective finger, from the thumb to the little...
There are 7 bones forming the fingers in each hand. Based on their location, they are referred to as: 1. Proximal phalanx 2. Middle phalanx 3. Distal phalanx The index to little finger have 3 phalanges each, while only two are in each thumb.
Radiocarpal joint:Between the radius and the carpals Ulnocarpal Joint: Where the carpals articulate with the ulna. The above two articulations, together with the distal radioulnar joint (between the radius and ulna) form the wrist. Carpometacarpal (CMC) Joints: Between the carpals and the metacarpal bone. The CMC joint of the thumb has the greatest...
Learn about the 27 bones in each human hand, their types, locations, and functions. See labeled diagrams of carpal, metacarpal, and phalangeal bones, as well as the joints and articulations in the hand.
Aug 5, 2018 · The skeleton of the hand contains 27 bones which can be divided into three groups: The carpus (the wrist): comprised of 8 carpal bones. The metacarpus: comprised of 5 metacarpal bones. The phalanges: comprised of 14 phalangeal bones.
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Mar 20, 2015 · Learn about the eight wrist bones and the five metacarpal bones that form the skeleton of the hand. See how they connect to each other and to the fingers via ligaments and cartilage.
- Bones of the hand. To understand the anatomy of the hand we first must understand the anatomy of the forearm and wrist. The forearm consists of two bones, the radius and the ulna.
- Muscles of the hand. Interossei muscles. The interossei muscles are intrinsic hand muscles that originate from the intermediate surfaces of the metacarpals.
- Nerves of the hand. The ulnar nerve (C8-T1 nerve roots) arises from the medial cord of the brachial plexus and supplies all of the intrinsic muscles of the hand with a few exceptions.
- Blood supply and drainage of the hand. The superficial palmar arch is the main continuation of the ulnar artery. It receives a small superficial branch from the radial artery and supplies the fingers with blood via the common digital, and the distal ‘proper digital arteries’ which run on either side of the finger.
Jun 12, 2023 · Hand bones. There are 19 bones in each of your hands. They’re grouped together by their location and function: Metacarpals: The bones that are in your palm and give it its shape. Phalanges: The individual bones that make up the segments of your fingers and thumb. Sesamoids: Small bones embedded in your tendons that help them move smoothly ...
Nov 13, 2023 · Bones. The bones of the hand can be divided into three distinct groups: Carpals; Metacarpals; Phalanges; Each group of hand bones is important in its own right, but the eight carpals are especially interesting because they are arranged in two distinct rows and are direct contributors to the formation of the wrist. We’ll come back to the wrist ...
