name : 'American English', { bidder: 'openx', params: { unit: '539971158', delDomain: 'idm-d.openx.net' }}, { bidder: 'openx', params: { unit: '539971141', delDomain: 'idm-d.openx.net' }}, { bidder: 'triplelift', params: { inventoryCode: 'Oxford_MidArticle' }}, In four-legged animals, the radius is the main load-bearing bone of the lower forelimb. 'cap': true This end of the bone has three non-articular surfaces – volar, dorsal, and lateral. googletag.pubads().setTargeting("old_dc", "american_english"); free: true {code: 'ad_btmslot_a', pubstack: { adUnitName: 'old_btmslot', adUnitPath: '/23202586/old_btmslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'old_topslot' }}]}, radial collateral ligament of wrist joint, https://en.wikipedia.org/w/index.php?title=Radius_(bone)&oldid=992608620, Wikipedia articles incorporating text from the 20th edition of Gray's Anatomy (1918), Pages using multiple image with auto scaled images, Articles with unsourced statements from November 2019, Wikipedia articles needing clarification from January 2015, Wikipedia articles with faulty LNB identifiers, Creative Commons Attribution-ShareAlike License, The head is supported on a round, smooth, and constricted portion called the, Beneath the neck, on the medial side, is an eminence, the, Proximal radius fracture. Dictionary Collections Quiz ... attaches to humerus bone (upper arm bone) to the radius bone (bone on your thumb-side, palm up) to help move the arm up. Anatomy. dfpSlots['btmslot_a'] = googletag.defineSlot('/23202586/old_btmslot', [[300, 250], 'fluid'], 'ad_btmslot_a').defineSizeMapping(mapping_btmslot_a).setTargeting('sri', '0').setTargeting('vp', 'btm').setTargeting('hp', 'center').addService(googletag.pubads()); name : 'German-English', dictCodesArr["academic"] = { * free 'increment': 1, {code: 'ad_leftslot_a', pubstack: { adUnitName: 'old_leftslot', adUnitPath: '/23202586/old_leftslot' }, mediaTypes: { banner: { sizes: [[160, 600]] } }, Learn more. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'old_topslot' }}, There is one ulna bone in each arm. The body of the radius is self-explanatory, and the lower extremity of the radius is roughly quadrilateral in shape, with articular surfaces for the ulna, scaphoid and lunate bones. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'old_leftslot' }}]}, * OAAD,OALD9,OALD10 ga('create', 'UA-13175707-1', This crest separates the volar from the dorsal surface, and gives attachment to the interosseous membrane. 'max': 8, Change your default dictionary to American English. { bidder: 'ix', params: { siteId: '220612', size: [300, 250] }}, },{ {code: 'ad_leftslot_a', pubstack: { adUnitName: 'old_leftslot', adUnitPath: '/23202586/old_leftslot' }, mediaTypes: { banner: { sizes: [[160, 600]] } }, var pbHdSlots = [ storage: { In the context of the radius bone, a ray can be thought of rotating around an axis line extending diagonally[clarification needed] from center of capitulum to the center of distal ulna. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'old_leftslot' }}, { bidder: 'openx', params: { unit: '539971142', delDomain: 'idm-d.openx.net' }}, Definition of radius noun in Oxford Advanced American Dictionary. params: { dfpSlots['topslot'] = googletag.defineSlot('/23202586/old_topslot', [[728, 90]], 'ad_topslot').defineSizeMapping(mapping_topslot).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'center').addService(googletag.pubads()); { bidder: 'appnexus', params: { placementId: '12529711' }}, Pronunciation /ˈʌlnə/ See synonyms for ulna. When the hand is rotated so that the thumb turns inward, the upper end of the radius rotates on a boss on the lower end of the upper arm bone but the lower end crosses over the ulna. Thank you for helping build the largest language community on the internet. { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb7e310013', pos: 'old_btmslot_mobile_flex' }}, While the ulna is the major contributor to the elbow joint, the radius primarily contributes to the wrist joint.[4]. googletag.pubads().enableSingleRequest(); The upper epiphysis fuses with the body at the age of seventeen or eighteen years, the lower about the age of twenty. A fracture within the capsule of the, This page was last edited on 6 December 2020, at 05:03. /*english Listen to the audio pronunciation in English. }; }; bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162046', zoneId: '776310', position:'btf' }}, The corresponding bone in the lower leg is the fibula. iasLog("criterion : old_pc = dictionary"); Doctors wish to examine everyone living within a 10-mile radius of the factory. userIds: [{ bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162064', zoneId: '776446', position:'btf' }}, * free Its structure is similar in most terrestrial tetrapods, but it may be fused with the ulna in some mammals (such as horses) and reduced or modified in animals with flippers or vestigial forelimbs.[5]. Ulna definition, the bone of the forearm on the side opposite to the thumb. Sign in to disable ALL ads. NOUN (1) 1. the inner and longer of the two bones of the human forearm; [syn: ulna, elbow bone] The Collaborative International Dictionary of English v.0.48: ... fibula of the hind limb. document.head.appendChild(btScript); Its upper third is prominent, and from its oblique direction has received the name of the oblique line of the radius; it gives origin to the flexor digitorum superficialis muscle (also flexor digitorum sublimis) and flexor pollicis longus muscle; the surface above the line gives insertion to part of the supinator muscle. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. 'min': 31, The radius has a body and two extremities. 1). googletag.pubads().setTargeting("old_ei", "radius"); It extends from the online English dictionary, questions, discussion and forums settings at any time definition -. Forearm on the side opposite to the ulna is the British English definition of radius bone -.. 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