Thumb Pictures, Anatomy & Diagram | Body Maps - Healthline
2020年7月6日 · The thumb is the first of the hand's five digits, but it is typically not referred to as a finger. The thumb possesses a unique and wide range of motion not shared by the hand's other digits.
Thumb - Wikipedia
[A] When a person is standing in the medical anatomical position (where the palm is facing to the front), the thumb is the outermost digit. The Medical Latin English noun for thumb is pollex (compare hallux for big toe), and the corresponding adjective for thumb is pollical.
Hand Anatomy: Bones, muscles, arteries and nerves | Kenhub
2023年11月13日 · The human hand, the most distal part of the upper limb, is a remarkable feat of engineering and evolution. It is strong enough to allow climbers to tackle any mountain, but also sufficiently precise for the manipulation of some of the world’s smallest objects and the performance of complex actions.
Complete Guide to Hand Anatomy: Parts, Names & Diagram
2024年3月9日 · Hand anatomy consists of bones, muscles, and neurovascular structures that work together. They help us touch, hold, and move objects every day. While intrinsic hand muscles of hand anatomy play a role, forearm muscles also send tendons through the wrist, allowing for a wide range of movements.
Thumb | Muscles, Movement, Joints | Britannica
Thumb, short, thick first digit of the human hand and of the lower-primate hand and foot. It differs from other digits in having only two phalanges (tubular bones of the fingers and toes). The thumb also differs in having much freedom of movement and being opposable to tips of other digits.
Anatomy of the Hand & Wrist: Bones, Muscles & Ligaments - Cleveland Clinic
2023年6月12日 · Your hand begins where your wrist ends. It includes your palm, fingers and thumb. How are the hand and wrist structured? Your hand and wrist are structured to allow you to move, flex and rotate your wrist joint and to use your hand to grab and touch objects.
Hand Anatomy - eOrthopod.com
Most of the small muscles that work the thumb and pinky finger start on the carpal bones. These muscles connect in ways that allow the hand to grip and hold. Two muscles allow the thumb to move across the palm of the hand, an important function called thumb opposition.
Anatomy of the thumb: annotated MRI | e-Anatomy - IMAIOS
2024年10月2日 · Thanks to the high-resolution 3-T MRI, the complex anatomy of the thumb can be imaged in exquisite detail to provide an accurate diagnosis of clinically important ligament and tendon injuries.
FUNCTIONAL ANATOMY AND BIOMECHANICS OF THE THUMB
The thumb is a mechanical unit consisting of strong ligaments and dynamic muscles, providing the resistance to the fingers and palm during pinch and grip. Each thumb joint has a mechanical equivalent that helps explain elements of thumb stability.
Thumb - e-Anatomy - IMAIOS
The skeleton of the thumb consists of the first metacarpal bone which articulates proximally with the carpus at the carpometacarpal joint and distally with the proximal phalanx at the metacarpophalangeal joint. This latter bone articulates with the distal phalanx at the interphalangeal joint.