Forearm Anatomy
Forearm Anatomy - Related Videos
08:05
Testing Tactile Masking between the Forearms
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Cited by 2 •
2016
Here we explore contralateral tactile masking between the forearms in which tactile detection thresholds are modulated by vibration applied to a remote site. The details of which remote sites have an effect can tell us about how the body is represented in the brain.
01:16
Muscles that Move the Forearm
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2024
The muscles that move the forearms can be divided into four groups: forearm flexors, forearm extensors, forearm pronators, and forearm supinators. The flexors and extensors act on the elbow joint, while the pronators and supinators act on the radioulnar joints. Forearm Flexors The biceps brachii, brachialis, and brachioradialis are forearm flexors. The biceps brachii is made up of two heads. Its long head originates at the supraglenoid tubercle of the scapula, whereas that of the short head is...
07:19
Simulating Fall-Induced Wrist Fractures Using a Cadaveric Human Forearm Specimen
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2026
Source:Anthony J. Yosick1,2, Christine Massie1, Emma Knapp2, Hani A. Awad1,2,31Department of Biomedical Engineering, University of Rochester, US2Center for Musculoskeletal Research, Department of Orthopedics, University of Rochester Medical Center, USA3Department of Orthopedics, University of Rochester Medical Center, USAThe video demonstrates fall-related wrist fractures using human cadaver forearms with varying bone densities. Specimens are standardized by removing upper soft tissue,...
01:16
Muscles of the Forearm that Move the Hand and Fingers
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2026
The muscles of the forearm that move the wrist, hand, and digits are numerous and diverse. They can be classified into two groups based on their location and function — the anterior and posterior compartment muscles. Anterior Compartment The anterior compartment muscles originate from the humerus. They primarily function as flexors and are also known as flexor muscles. They typically insert on the carpals, metacarpals, and phalanges. The superficial layer includes the flexor carpi radialis,...
01:20
Anatomy of the Eyeball
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2024
The eye is a spherical, hollow structure composed of three tissue layers. The outer layer — the fibrous tunic, comprises the sclera — a white structure — and the cornea, which is transparent. The sclera encompasses some of the ocular surface, most of which is not visible. However, the 'white of the eye' is distinctively visible in humans compared to other species. The cornea, a clear covering at the front of the eye, enables light penetration. The eye's middle layer, the vascular tunic,...
FAQs
Pronation and supination depend on the radius moving around the ulna at both the proximal and distal radioulnar joints. This arrangement changes the relationship of the forearm bones while enabling the hand to rotate. Studying these paired joints helps explain why forearm rotation is distinct from wrist and finger movements, even though the actions work together.
The forearm’s flexor and extensor compartments contribute different mechanical actions. Flexor muscles act across the wrist and fingers, while extensor muscles support opposing movements. Their coordinated activity links the forearm to hand function, helping explain how grip and precise finger movements depend on organized muscle groups rather than isolated muscles working independently.
Muscles and bones do not account for every forearm function. Nerves contribute to sensation, blood vessels support vascular structures, and connective tissues help maintain the organization of the region. Including these tissues in anatomical study provides a broader basis for understanding nerve compression, vascular conditions, movement, and the structural effects of injury.
Assessment should consider the radius and ulna, the flexor and extensor muscle compartments, nerves, blood vessels, and connective tissues. Examining these structures together can help relate a fracture or tendon injury to possible effects on movement, sensation, grip, or circulation. This integrated approach is more informative than evaluating a single tissue in isolation.
The arrangement of bones, muscle compartments, and connective tissues provides a framework for interpreting fractures and tendon injuries. Bone damage can be considered alongside the structures responsible for wrist and finger movement, while tendon problems can be related to the relevant muscle compartments. This anatomical context supports clearer assessment of functional consequences.
Forearm Anatomy helps connect regional structure with clinical decision-making. Knowledge of bones, muscles, nerves, blood vessels, and connective tissues can inform surgical approaches and help rehabilitation professionals relate injury to movement, sensation, grip, and hand coordination. It also links biological study with practical evaluation of fractures, nerve compression, vascular conditions, and tendon injuries.