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The styloid process of the ulna projects from the medial and back part of the ulna. It descends a little lower than the head. The head is separated from the styloid process by a depression for the attachment of the apex of the triangular articular disk, and behind, by a shallow groove for the tendon of the extensor carpi ulnaris muscle.
The radius is named so because the radius (bone) acts like the radius (of a circle). It rotates around the ulna and the far end (where it joins to the bones of the hand), known as the styloid process of the radius, is [clarification needed] the distance from the ulna (center of the circle) to the edge of the radius (the circle). The ulna acts ...
De Quervain syndrome causes pain over the styloid process of the radius. [3] [4] This is due to the passage of the inflamed extensor pollicis brevis tendon and abductor pollicis longus tendon around it. [4] [5] The styloid process of the radius is a useful landmark during arthroscopic resection of the scaphoid bone. [6]
radius bone of the lower arm - Radial styloid process; ulna bone of the lower arm - Ulnar styloid process; Third metacarpal - Third metacarpal styloid process; Tibia and Fibula - Tibial process, fibular process. 5th metatarsal of the foot - also known as the tuberosity of the fifth metatarsal; In botany, a styloid is a needle-shaped crystal of ...
The ulna or ulnar bone (pl.: ulnae or ulnas) [3] is a long bone in the forearm stretching from the elbow to the wrist. It is on the same side of the forearm as the little finger, running parallel to the radius, the forearm's other long bone. Longer and thinner than the radius, the ulna is considered to be the smaller long bone of the lower arm.
Lateral supracondylar ridge of the humerus and the orbicular ligament of the radius: Insertion: Distal radius (radial styloid process) Artery: Radial recurrent artery: Nerve: Radial nerve (C5-C8 & T1) Actions: Flexion of elbow, supination and pronation of the radioulnar joint to 90° Identifiers; Latin: musculus brachioradialis: TA98: A04.6.02. ...
The radial collateral ligament (external lateral ligament, radial carpal collateral ligament) extends from the tip of the styloid process of the radius and attaches to the radial side of the scaphoid (formerly navicular bone of the hand), immediately adjacent to its proximal articular surface and some fibres extend to the lateral side of the trapezium (greater multangular bone).
proximal ulna fracture with dislocation of radial head: blow to forearm: Monteggia fracture at Who Named It? Moore's fracture: Edward Mott Moore: distal radius fracture with ulnar dislocation and entrapment of styloid process under annular ligament: Moore's fracture at TheFreeDictionary.com: Pipkin fracture-dislocation: G. Pipkin