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Bones of the arm and hand. Labels: a, large end of ulna; b, radius; c, small end of the ulna; d, carpal bones; e, metacarpal bones; f, first row of the bones of the fingers.

Bones of the Arm and Hand

Bones of the arm and hand. Labels: a, large end of ulna; b, radius; c, small end of the ulna; d, carpal…

The skeleton of the arm and leg. Labels: H, the humerus; Cd, its articular head which fits into the glenoid fossa of the scapula; U, the ulna; R, the radius; O, the olecranon; Fe, the femur; P, the patella; Fi, the fibula; T, the tibia.

Arm and Leg Skeleton

The skeleton of the arm and leg. Labels: H, the humerus; Cd, its articular head which fits into the…

"The bones of the arm. a, humerus; b, ulna; c, radius; d, the carpus; e, the fifth metacarpal; f, the three phalanges of the fifth digit (little finger)." —Martin, 1917

Arm Bones

"The bones of the arm. a, humerus; b, ulna; c, radius; d, the carpus; e, the fifth metacarpal; f, the…

Bones of the arm. Labels: A, arm in supination; B, arm in pronation. H, humerus; R, radius; U, ulna.

Bones of the Arm

Bones of the arm. Labels: A, arm in supination; B, arm in pronation. H, humerus; R, radius; U, ulna.

Transverse section through the middle of the right forearm, in the position of semipronation.

Transverse Section Through Arm

Transverse section through the middle of the right forearm, in the position of semipronation.

"A, acromion; C, coracoid; CA, carpus; CL, clavicle; H, humerus; M, metacarpals; O, ventral surface of the scapula; P, phalanges, proximal row; R, radius; T, head of humerus; U, ulna." —Whitney, 1889

Bones of the Shoulder and Upper Extremity - Front View

"A, acromion; C, coracoid; CA, carpus; CL, clavicle; H, humerus; M, metacarpals; O, ventral surface…

Right elbow joint, cut through at right angles to the axis of trochlea humeri, from the ulnar side.

Elbow Joint

Right elbow joint, cut through at right angles to the axis of trochlea humeri, from the ulnar side.

A view from behind of a frontal section through the right elbow joint.

Frontal Section Through Elbow Joint

A view from behind of a frontal section through the right elbow joint.

A sagittal section through the left elbow joint of a child. View from the inner side.

Sagittal Section Through Elbow Joint

A sagittal section through the left elbow joint of a child. View from the inner side.

Left elbow joint, showing posterior and external ligaments.

Elbow Showing External Ligaments

Left elbow joint, showing posterior and external ligaments.

Left elbow joint, showing anterior and internal ligaments.

Elbow Showing Internal Ligaments

Left elbow joint, showing anterior and internal ligaments.

Frontal section of the elbow, viewed from in front.

Frontal Section Through the Elbow

Frontal section of the elbow, viewed from in front.

Sagittal section of the right elbow, with the arm in pronation.

Sagittal Section of the Elbow

Sagittal section of the right elbow, with the arm in pronation.

"Right fore foot of Indian Elephant. U, ulna; R, radius; c, cunelform; l, lunar; sc, scaphold; u, unciform; m, magnum; td, trapezoid; tm, trapezium; I to V, first to fifth digit." —The Encyclopedia Britannica, 1903

Elephant Foot

"Right fore foot of Indian Elephant. U, ulna; R, radius; c, cunelform; l, lunar; sc, scaphold; u, unciform;…

This diagram shows the bones of the right fore-arm. H, the humerus; R, the radius; and U, the ulna.

Forearm Bones

This diagram shows the bones of the right fore-arm. H, the humerus; R, the radius; and U, the ulna.

Transverse section through the bones of the forearm (radius and ulna), taken at about the middle of their length (schematized).

Forearm Bones

Transverse section through the bones of the forearm (radius and ulna), taken at about the middle of…

Front view of the bones of the forearm

Back View of the Bones of the Forearm

Front view of the bones of the forearm

Bones of the right forearm,with their ligaments; volar aspect.

Bones and Ligaments of Forearm

Bones of the right forearm,with their ligaments; volar aspect.

The bones of the right forearm, dorsal view.

Dorsal View of the Bones of the Forearm

The bones of the right forearm, dorsal view.

Front view of the bones of the forearm

Front View of the Bones of the Forearm

Front view of the bones of the forearm

The muscles and nerves on the front of the forearm and hand. The pronator radii teres, flexor carpi radialis, and palmaris longus have been removed.

Muscles and Nerves of the Forearm

The muscles and nerves on the front of the forearm and hand. The pronator radii teres, flexor carpi…

Section across the forearm in the middle third. Labels: A, pronator radii teres; B, flexor carpi radialis; C, flexor sublimis digitorum; D, palmaris longus; E, flexor carpi ulnaris; F, flexor profundus digitorum; G, extensor carpi ulnaris; H, extensor longus pollicis; I, extensor communis digitorum; J, extensor ossis metacarpi pollicis; K, extensor carpi radialis brevior; L, extensor carpi radialis longior; M, brachio-radialis; a, radius; b, interosseous membrane; c, ulna; 1, radial nerve; 2, radial artery; 3, anterior interosseous artery; 4, anterior interosseons nerve (underneath flexor longus pollicis); 5, median nerve; 6, ulnar artery; 7, ulnar nerve; 8, posterior interosseous artery; 9, posterior interosseous nerve.

Section Across Forearm

Section across the forearm in the middle third. Labels: A, pronator radii teres; B, flexor carpi radialis;…

A section across the forearm a short distance below the elbow-joint. R and U, its two supporting bones, the radius and ulna; e, the epidermis, and d, the dermis of the skin; the latter is continuous below with bands of connective tissue, s, which penetrate between and invest the muscles, which are indicated by numbers; n, n, nerves and vessels.

Forearm, Section of

A section across the forearm a short distance below the elbow-joint. R and U, its two supporting bones,…

The bones of the right forearm, ventral view.

Ventral View of the Bones of the Forearm

The bones of the right forearm, ventral view.

A anterior view of the ligaments of the wrist and hand.

Hand Ligaments

A anterior view of the ligaments of the wrist and hand.

A posterior view of the ligaments of the wrist and hand.

Hand Ligaments

A posterior view of the ligaments of the wrist and hand.

"Showing how the Ends of the Bones are shaped to form the Elbow Joint. The cut ends of a few ligaments are seen." — Blaisedell, 1904

Elbow Joint

"Showing how the Ends of the Bones are shaped to form the Elbow Joint. The cut ends of a few ligaments…

"Skeleton and volar Membranes of the Noctule Bat. c, clavicle; h, humerus; r, radius; u, ulna; d1, first digit or pollex; d2, d3, d4, d5, other digits of the manus supporting um, the wing-membrane; m, m, metacarpal bones; ph1, first phalanx; ph2, second phalanx; ph3, third phalanx; am, antebrachial membrane; f, femur; t, tibia; fb, fibula (rudimentary); c, calcaneum or calcar supporting im, the interfemoral membrane; pcl, post-calcaneal lobe." —The Encyclopedia Britannica, 1903

Noctule Bat

"Skeleton and volar Membranes of the Noctule Bat. c, clavicle; h, humerus; r, radius; u, ulna; d1, first…

An anterior view of the radius and ulna.

Radius and Ulna

An anterior view of the radius and ulna.

A posterior view of the radius and ulna.

Radius and Ulna

A posterior view of the radius and ulna.

The plan of development of the ulna for three centuries.

Ulna

The plan of development of the ulna for three centuries.

The ulna bone in the human arm.

Ulna

The ulna bone in the human arm.

The ulna (elbow bone), which is the principal bone of the forearm.

Ulna

The ulna (elbow bone), which is the principal bone of the forearm.

The ulna, a bone of the arm.

Ulna

The ulna, a bone of the arm.

"The <em>ulna</em>, or elbow bone, is the larger of these two bones. It is joined to the humerus by a hinge joint at the elbow. It is on the same side as the little finger. The <em>radius</em>, queerly named because it is supposed to resemble one of the spokes of a wheel, is the long, slightly curved, outer bone fo the forearm. It is on the same side as the thumb. Its upper end is fastened both to the ulna and the humerus." — Blaisedell, 1904

Ulna and Radius

"The ulna, or elbow bone, is the larger of these two bones. It is joined to the humerus by…

The Ulna and Radius. Labels: 1, radius; 2, ulna; o, olecranon process, on the anterior surface of which are seen the large (gs) and the small (ls) cavities for the reception of the lower end of the humerus and of the head of the radius, respectively; h, head of radius.

The Human Ulna and Radius

The Ulna and Radius. Labels: 1, radius; 2, ulna; o, olecranon process, on the anterior surface of which…

Fracture of upper third of ulna, with dislocation of radius forward.

Fractured Ulna with Dislocation of Radius

Fracture of upper third of ulna, with dislocation of radius forward.

The bone extending from the elbow to the wrist on the side opposite to the thumb.

Human Ulna

The bone extending from the elbow to the wrist on the side opposite to the thumb.

Right ulna, inner aspect.

Inner Aspect of Ulna

Right ulna, inner aspect.

Longitudinal section of ulna.

Longitudinal Section of Ulna

Longitudinal section of ulna.

Right ulna, outer aspect.

Outer Aspect of Ulna

Right ulna, outer aspect.

A, transverse section of the ulna, (bone of the arm), natural size, showing the medullary cavity. B, the more deeply shaded part of A magnified 20 diameters.

Transverse Section of Ulna

A, transverse section of the ulna, (bone of the arm), natural size, showing the medullary cavity. B,…

"Diagrams of the girdles and appendages in a typical Vertebrate. A, anterior; B, posterior. ac., acetabulum, articulation of the humerus with its girdle; c, coracoid; ca., carpals; c.e., centralia; d.c., distal carpals; d.t., distal tarsals; el., elbow joint; f, fibula; fe., femur; fi., fibulare; gc., glenoid cavity, articulation of arm with girdle; h, humerus; il., ilium; in., intermediale; is. ischium; kn., knee joint; m.c., metacarpals (1-5); m.t., metatarsals (1-5); p, pubis; ph., phalanges (1-5); pr.c., precoracoid; r, radius; ra., radiale; sc., scapula; t, tibia; ta., tarsals; ti., tibiale; u., ulna; ul., ulnare." -Galloway, 1915

Vertebrate Appendages

"Diagrams of the girdles and appendages in a typical Vertebrate. A, anterior; B, posterior. ac., acetabulum,…

"Ideal fore limb. H., Humerus; R., radius; U., ulna; r'., radiale; u'., ulnare; i., intermedium; c., centrale; 1-5, carpalia bearing the corresponding digits with metacarpals (mc.) and phalanges (ph)." -Thomson, 1916

Vertebrate Fore Limb

"Ideal fore limb. H., Humerus; R., radius; U., ulna; r'., radiale; u'., ulnare; i., intermedium; c.,…

"Skeleton of Egyptian Vulture. (Neophron percnopterus), to show bones of bird. a, post-orbital process; b, lower jaw; c, cervical vertebra; co, coracoid bone; d, humerus; e, radius; f, ulna; g, metacarpus; h, second phalanx of chief digit of wing; h, phalanges of lower digit; h'', first phalanx of chief digit; i, clavicle; k, sternum; l, pelvis; m, coccyx; n, femur; o, tibia; p, tarso-metatarsus; q, phalanges of foot." &mdash; Winston's Encyclopedia, 1919

Vulture Skeleton

"Skeleton of Egyptian Vulture. (Neophron percnopterus), to show bones of bird. a, post-orbital process;…

Ligaments on anterior aspect of radio carpal, carpal, and carpo metacarpal joints.

Ligaments of the Wrist

Ligaments on anterior aspect of radio carpal, carpal, and carpo metacarpal joints.