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Abductor pollicis longus muscle

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The APL insertion on the trapezium and the APB origin on the same bone is the only connection between the thumb's intrinsic and extrinsic muscles. As the thumb is brought into action, these two muscles must coordinate to keep the trapezium stable in the carpus, which is important for the proper
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Aversi-Ferreira, Tales Alexandre; Maior, Rafael Souto; Carneiro-e-Silva, Frederico O.; Aversi-Ferreira, Roqueline A. G. M. F.; Tavares, Maria Clotilde; Nishijo, Hisao; Tomaz, Carlos (2011).
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Passing obliquely downward and lateralward, it ends in a tendon, which runs through a groove on the lateral side of the lower end of the radius, accompanied by the tendon of the
1434: 188: 852: 444: 36: 2032: 1427: 2037: 1826: 1822: 1749: 716: 164: 1793: 420:. In gibbons, however, the APL originates proximally on the radius and ulna, whereas it originates in the middle part of these bones in 326:. Abductor pollicis longus lies close to the radial nerve. The posterior interosseous nerve is derived from spinal segments C7 & C8. 1710: 1641: 998:"Comparative Anatomical Analyses of the Forearm Muscles of Cebus libidinosus (Rylands et al. 2000): Manipulatory Behavior and Tool Use" 2187: 1646: 1420: 439:, the APL flexes the thumb rather than extending it like in modern humans. Compared to the wrists of chimpanzees, the human wrist is 428:, and humans. In all these primates, the muscle is inserted onto the base of the first metacarpal and sometimes onto the trapezium ( 1774: 793: 290:
part and a proximal, deep part. The superficial part is inserted with one or more tendons into the radial side of the base of the
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position of the trapezium in humans which, in its turn, is a result of the expansion of the trapezoid on the side of the palm.
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Le Minor, JM (1994). "The sesamoid bone of musculus abductor pollicis longus (os radiale externum or prepollex) in primates".
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Multiple APL tendons can be regarded as a functional advantage since injured tendons can be compensated by the healthy ones.
2070: 2027: 1994: 1843: 1838: 1779: 335: 183: 89: 1739: 315: 294:, and the deep part is variably inserted into the trapezium, the joint capsule and its ligaments, and into the belly of 287: 249: 1744: 1547: 1279:"Functional relationship between the abductor pollicis longus and abductor pollicis brevis muscles: an EMG analysis" 2157: 195: 110: 71: 51: 600: 2075: 1833: 1769: 1603: 466: 413: 856: 588: 528: 516: 2006: 1989: 1158:"A Rare Quadruplicate Arrangement of Abductor Pollicis Longus Tendons â€” Anatomical and Clinical Relevance" 671: 655: 647: 576: 564: 552: 540: 355: 299: 135: 1890: 1565: 385: 229: 119: 115: 2166: 2060: 2044: 1922: 1734: 1593: 663: 651: 346:
An accessory abductor pollicis longus (AAPL) tendon is present in more than 80% of people, and a separate
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The extrinsic thumb muscles are those originating in the forearm: extensor pollicis longus,
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is present in 20% of people. In one study, the accessory tendon was inserted into the
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Michilsens, Fana; Vereecke, Evie E; D'Août, Kristiaan; Aerts, Peter (September 2009).
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Salesa, Manuel J.; Antón, Mauricio; Peigné, Stéphane; Morales, Jorge (January 2006).
1216: 708: 462: 269: 1173: 501:. The APL sesamoid is present in all non-human primates, but only in about half of 1472: 1314:"Evidence of a false thumb in a fossil carnivore clarifies the evolution of pandas" 1201:"Functional anatomy of the gibbon forelimb: adaptations to a brachiating lifestyle" 932: 454:
for a range of hand muscles. It is possible that these differences are due to the
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Mehta, Vandana; Arora, Jyoti; Suri, Rajesh Kumar; Rath, Gayatri (February 2009).
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Hazani, Ron; Engineer, Nitin J.; Cooney, Damon; Wilhelmi, Bradon J. (2008).
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The chief action of abductor pollicis longus is to abduct the thumb at the
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the thumb at the wrist. Its tendon forms the anterior border of the
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Bouche, P. (2013-01-01), Said, GĂ©rard; Krarup, Christian (eds.),
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Focks, Claudia; März, Ulrich (2008-01-01), Focks, Claudia (ed.),
1969: 257: 225: 56: 1416: 1244:"Structure and function of the abductor pollicis longus muscle" 697:"Chapter 4 - Acupuncture Points of the Twelve Primary Channels" 1542: 1447: 366:(1%). Up to seven tendons have been reported in rare cases. 885: 354:(41%); proximally on the abductor pollicis brevis (22%) and 396:
functioning of the thumb (i.e. precision and power grip.)
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and bonobos) and thumb sesamoids (crab-eating monkeys).
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The abductor pollicis longus lies immediately below the
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Tocheri, Matthew W.; Orr, Caley M.; Jacofsky, Marc C.;
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Bravo, Elena; Barco, Raul; BullĂłn, Adrian (May 2010).
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and is sometimes united with it. It arises from the
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For a dissection example see 2162: 687: 639: 512: 450:) in having considerably longer muscle 310:The abductor pollicis longus muscle is 199: 25: 16:Muscle in the forearm moving the thumb 847: 845: 843: 384:By its continued action, it helps to 7: 757:van Oudenaarde & Oostendorp 1995 1242:van Oudenaarde, E (February 1991). 606:Muscle of the hand. Posterior view. 855:. PT Central. 1998. Archived from 786:10.1016/b978-0-444-52902-2.00019-9 465:embedded into the APL tendon is a 14: 505:, and normally absent in humans. 153:musculus abductor pollicis longus 2165: 1387:10.1111/j.1469-7580.2008.00865.x 1217:10.1111/j.1469-7580.2009.01109.x 709:10.1016/b978-044310028-4.50007-2 599: 587: 575: 563: 551: 539: 527: 515: 282:The insertion is divided into a 1174:10.1590/S1807-59322009000200014 594:Abductor pollicis longus muscle 582:Abductor pollicis longus muscle 570:Abductor pollicis longus muscle 558:Abductor pollicis longus muscle 546:Abductor pollicis longus muscle 534:Abductor pollicis longus muscle 522:Abductor pollicis longus muscle 29:Abductor pollicis longus muscle 1823:extensor carpi radialis longus 1750:flexor digitorum superficialis 878:Bravo, Barco & BullĂłn 2010 776:, Peripheral Nerve Disorders, 774:Handbook of Clinical Neurology 1: 336:posterior interosseous artery 260:, below the insertion of the 90:Posterior interosseous artery 1023:10.1371/journal.pone.0022165 461:A small, lens-shaped radial 322:after it passes through the 316:posterior interosseous nerve 228:. Its major function is to 2033:flexor digiti minimi brevis 933:Aversi-Ferreira et al. 2011 2204: 1775:flexor digitorum profundus 853:"Abductor pollicis longus" 823:"Abductor pollicis longus" 362:(15%); or the base of the 196:Anatomical terms of muscle 18: 2188:Muscles of the upper limb 1463: 1067:10.1007/s11999-009-1059-4 469:state found in all known 194: 33: 2000:abductor pollicis brevis 1884:extensor pollicis longus 1879:extensor pollicis brevis 1874:abductor pollicis longus 935:, Results and Discussion 672:abductor pollicis brevis 656:abductor pollicis longus 648:extensor pollicis brevis 618:Extensor pollicis longus 410:extensor pollicis brevis 356:opponens pollicis brevis 296:abductor pollicis brevis 277:extensor pollicis brevis 214:abductor pollicis longus 136:Adductor pollicis muscle 1339:10.1073/pnas.0504899102 497:that first appeared in 2038:abductor digiti minimi 2028:opponens digiti minimi 1995:flexor pollicis brevis 1844:extensor carpi ulnaris 1839:extensor digiti minimi 1780:flexor pollicis longus 1318:Proc Natl Acad Sci USA 945:Michilsens et al. 2009 664:flexor pollicis brevis 652:flexor pollicis longus 212:In human anatomy, the 21:anatomical terminology 1913:bicipital aponeurosis 1740:flexor carpi radialis 1055:Clin Orthop Relat Res 780:, Elsevier: 311–366, 475:genera except in the 392:) and flex the hand. 379:carpometacarpal joint 292:first metacarpal bone 266:interosseous membrane 65:Interosseous membrane 2107:extensor retinaculum 1745:flexor carpi ulnaris 1008:(7/e22165): e22165. 701:Atlas of Acupuncture 623:De Quervain syndrome 1935:antebrachial fascia 1869:anatomical snuffbox 1680:triangular interval 1637:intermuscular septa 1529:infraspinous fascia 1524:supraspinous fascia 1330:2006PNAS..103..379S 1014:2011PLoSO...622165A 956:Tocheri et al. 2008 921:van Oudenaarde 1991 744:(1918), see infobox 422:crab-eating monkeys 256:of the body of the 234:anatomical snuffbox 2137:palmar aponeurosis 2132:flexor retinaculum 2112:extensor expansion 1956:osborne's ligament 1834:extensor digitorum 1770:pronator quadratus 1670:quadrangular space 1604:articularis cubiti 968:Salesa et al. 2006 886:Hazani et al. 2008 628:Bennett's fracture 19:This article uses 2153: 2152: 2149: 2148: 2145: 2144: 2007:adductor pollicis 1990:opponens pollicis 1964: 1963: 1899: 1898: 1788: 1787: 1690: 1689: 1537: 1536: 1289:(Pt 3): 509–515. 1141:10.1159/000147623 1129:Acta Anat (Basel) 909:Mehta et al. 2009 897:Mehta et al. 2009 718:978-0-443-10028-4 668:adductor pollicis 660:opponens pollicis 443:(compared to the 300:opponens pollicis 222:extrinsic muscles 210: 209: 205: 2195: 2170: 2169: 2161: 2125: 2100: 2093: 1975: 1891:extensor indicis 1857: 1806: 1799: 1763: 1723: 1716: 1707: 1675:triangular space 1566:coracobrachialis 1554: 1461: 1437: 1430: 1423: 1414: 1408: 1398: 1361: 1351: 1341: 1308: 1298: 1273: 1263: 1238: 1228: 1195: 1185: 1152: 1123: 1113: 1088: 1078: 1061:(5): 1305–1309. 1045: 1035: 1025: 982: 976: 970: 965: 959: 953: 947: 942: 936: 930: 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1701:compartments 1664: 1636: 1548:compartments 1473:rotator cuff 1378: 1374: 1321: 1317: 1286: 1282: 1251: 1247: 1208: 1204: 1165: 1161: 1132: 1128: 1104:(e53): e53. 1101: 1097: 1058: 1054: 1005: 1001: 974: 963: 951: 940: 928: 916: 904: 899:, Discussion 892: 873: 863:25 September 861:. Retrieved 857:the original 832:25 September 830:. Retrieved 817: 807:, retrieved 777: 773: 763: 739: 722:, retrieved 700: 690: 642: 489:where it is 484: 481:giant pandas 470: 460: 445: 434: 403: 394: 383: 376: 368: 348:muscle belly 345: 333: 330:Blood supply 320:radial nerve 309: 281: 274: 252:part of the 243: 217: 213: 211: 165:A04.6.02.049 152: 102:Radial nerve 1500:teres major 1488:teres minor 1254:: 221–227. 452:moment arms 437:chimpanzees 388:the wrist ( 306:Innervation 288:superficial 264:, from the 142:Identifiers 2098:posterior: 2066:interossei 2023:hypothenar 1813:mobile wad 1576:brachialis 981:, Abstract 827:GPnotebook 809:2020-10-22 724:2020-10-22 682:References 312:innervated 131:Antagonist 2123:anterior: 2061:lumbrical 1864:supinator 1794:posterior 1586:posterior 472:Carnivora 467:primitive 456:supinated 404:The only 352:trapezium 342:Variation 298:(APB) or 246:supinator 240:Structure 120:extension 116:Abduction 72:Insertion 2182:Category 1923:extensor 1711:anterior 1599:anconeus 1558:anterior 1456:Shoulder 1405:18380869 1358:16387860 1235:19519640 1192:19219322 1120:19092992 1085:19760470 1042:21789230 1002:PLOS ONE 804:23931789 612:See also 503:gorillas 486:Simocyon 463:sesamoid 446:Pan-Homo 430:siamangs 406:primates 373:Function 262:anconeus 76:Base of 2172:Anatomy 1696:Forearm 1642:lateral 1468:deltoid 1446:of the 1444:Muscles 1396:2409097 1375:J. Anat 1349:1326154 1326:Bibcode 1305:7559124 1296:1167009 1283:J. Anat 1270:2032936 1261:1256056 1248:J. Anat 1226:2750765 1205:J. 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Index

anatomical terminology

Origin
Ulna
radius
Interosseous membrane
Insertion
1st metacarpal
Artery
Posterior interosseous artery
Nerve
Radial nerve
Actions
Abduction
extension
thumb
Antagonist
Adductor pollicis muscle
Latin
TA98
A04.6.02.049
TA2
2517
FMA
38515
Anatomical terms of muscle
edit on Wikidata
extrinsic muscles
hand
abduct

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