hand Definition, Anatomy, Bones, Diagram, & Facts Britannica


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The human hand is made up of the wrist, palm, and fingers and consists of 27 bones, 27 joints, 34 muscles, over 100 ligaments and tendons, and many blood vessels and nerves. The hands enable us to perform many of our daily activities such as driving, writing and cooking.


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The hand has 27 bones: the 8 bones of the carpus (wrist), arranged in two sets of four; the 5 bones of the metacarpus, one to each digit; and the 14 digital bones, or phalanges, 2 in the thumb and 3 in each finger. The carpal bones fit into a shallow socket formed by the bones of the forearm.


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Triquetrum. Pisiform. Trapezium. Trapezoid. Capitate. Hamate. Together, these bones connect the lower arm to the hand and fingers as the proximal carpal bones articulate with the radius and ulna to form the wrist joint. These bones articulate with each other, allowing wrist movement so we can perform common daily activities with our hands.


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Joints. 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. Our joints typically have a capsule of tough, but flexible, fibrous tissue.


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The human hand has 27 bones: the carpals or wrist accounts for 8; the metacarpals or palm contains five; the remaining fourteen are digital bones; fingers and thumb. The palm has five bones known as metacarpal bones, one to each of the 5 digits. These metacarpals have a head, a shaft, and a base.


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Anatomy of the Hand Hand and Arm Surgery Orthopedics Anatomy of the Hand The hand is composed of many different bones, muscles, and ligaments that allow for a large amount of movement and dexterity. There are 3 major types of bones in the hand itself, including: Phalanges.


hand Definition, Anatomy, Bones, Diagram, & Facts Britannica

Actions: Abducts the thumb. Innervation: Median nerve (recurrent branch). Flexor Pollicis Brevis The flexor pollicis brevis forms the medial aspect of the thenar eminence. It is described as having a superficial and deep part - although the deep component is variable in size.


7. Muscles of the Forearm and Hand Musculoskeletal Key

Basic Hand and Wrist Anatomy. The structure of the human hand is a highly complex. It is composed of skin, blood vessels, nerves, tendons, ligaments, bones and joints. When there is a problem with any of these structures, pain or impaired function may result. Bones and Joints. There are 29 bones in the hand and wrist if you include the radius.


Intrinsic Hand Muscles MSK Medbullets Step 1

Introduction Few structures of the human anatomy are as unique as the hand. The hand needs to be mobile in order to position the fingers and thumb. Adequate strength forms the basis for normal hand function. The hand also must be coordinated to perform fine motor tasks with precision.


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The hand is made up of many bones: 5 elongated metacarpal bones, which are next to the wrist and help to make up the palm; 14 phalanges which make up the fingers. Each finger is made up of 3 phalanges; the thumb is made up of 2. These 19 bones collectively form 14 separate joints.


Hand Anatomy Overview Bones, Blood Supply, Muscles Geeky Medics

Fig 1 - Overview of the bones of the hand. Carpal Bones 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.


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Hand Muscles Anatomy, Functions & Diagram | Body Maps Human body Muscular System Muscles Muscles The hand has several muscles. Some make broad, smooth movements, and others make.


Understanding the Anatomy of the Hand Health Life Media

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. Both forearm bones articulate with the carpal bones of the wrist distally. The radius articulates with the cashew shaped scaphoid bone, and the croissant or moon-shaped lunate bone.


Hand and Wrist Anatomy Murdoch Orthopaedic Clinic

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 later on.


Hand Bones Anatomy, Structure and Diagram

Also known as the broad palm or metacarpus, it consists of the area between the five phalanges (finger bones) and the carpus (wrist joint). Located in the palm are 17 of the 34 muscles that.


Hand Image Back in Action

Capitate: The largest of the wrist bones, this rests between the trapezoid and the hamate behind the middle and ring fingers. Hamate: This small bone has a hook on the palmar side. It rests next.