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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
1445: 199: 863: 455: 47: 2043: 1438: 2048: 1837: 1833: 1760: 727: 175: 1804: 431:. In gibbons, however, the APL originates proximally on the radius and ulna, whereas it originates in the middle part of these bones in 337:. Abductor pollicis longus lies close to the radial nerve. The posterior interosseous nerve is derived from spinal segments C7 & C8. 1721: 1652: 1009:"Comparative Anatomical Analyses of the Forearm Muscles of Cebus libidinosus (Rylands et al. 2000): Manipulatory Behavior and Tool Use" 2198: 1657: 1431: 450:, the APL flexes the thumb rather than extending it like in modern humans. Compared to the wrists of chimpanzees, the human wrist is 439:, and humans. In all these primates, the muscle is inserted onto the base of the first metacarpal and sometimes onto the trapezium ( 1785: 804: 301:
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.
2081: 2038: 2005: 1854: 1849: 1790: 346: 194: 100: 1750: 326: 305:, and the deep part is variably inserted into the trapezium, the joint capsule and its ligaments, and into the belly of 298: 260: 1755: 1558: 1290:"Functional relationship between the abductor pollicis longus and abductor pollicis brevis muscles: an EMG analysis" 2168: 206: 121: 82: 62: 611: 2086: 1844: 1780: 1614: 477: 424: 867: 599: 539: 527: 2017: 2000: 1169:"A Rare Quadruplicate Arrangement of Abductor Pollicis Longus Tendons â€” Anatomical and Clinical Relevance" 682: 666: 658: 587: 575: 563: 551: 366: 310: 146: 1901: 1576: 396: 240: 130: 126: 2177: 2071: 2055: 1933: 1745: 1604: 674: 662: 357:
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).
1227: 719: 473: 280: 1184: 512:. The APL sesamoid is present in all non-human primates, but only in about half of 1483: 1325:"Evidence of a false thumb in a fossil carnivore clarifies the evolution of pandas" 1212:"Functional anatomy of the gibbon forelimb: adaptations to a brachiating lifestyle" 943: 465:
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.),
1980: 268: 236: 67: 1427: 1255:"Structure and function of the abductor pollicis longus muscle" 708:"Chapter 4 - Acupuncture Points of the Twelve Primary Channels" 1553: 1458: 377:(1%). Up to seven tendons have been reported in rare cases. 896: 365:(41%); proximally on the abductor pollicis brevis (22%) and 407:
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
329:, which is a continuation of the deep branch of the 2131: 2106: 2097: 2064: 2026: 1988: 1979: 1954: 1914: 1863: 1812: 1803: 1769: 1729: 1720: 1705: 1668: 1623: 1595: 1567: 1552: 1519: 1465: 193: 181: 169: 157: 152: 140: 120: 106: 94: 81: 61: 56: 39: 919: 907: 369:(5%); had a double insertion on the trapezium and 1288:van Oudenaarde, E; Oostendorp, R A (June 1995). 888: 51:Deep muscles of posterior surface of the forearm 931: 1439: 419:to have an APL completely separated from the 8: 746: 744: 345:Abductor pollicis longus is supplied by the 2103: 1985: 1809: 1726: 1717: 1564: 1471: 1446: 1432: 1424: 45: 1405: 1358: 1348: 1305: 1270: 1235: 1192: 1120: 1085: 1042: 1032: 989: 891:, Results. For a dissection example see 2173: 698: 650: 523: 461:) in having considerably longer muscle 321:The abductor pollicis longus muscle is 210: 36: 27:Muscle in the forearm moving the thumb 858: 856: 854: 395:By its continued action, it helps to 7: 768:van Oudenaarde & Oostendorp 1995 1253:van Oudenaarde, E (February 1991). 617:Muscle of the hand. Posterior view. 866:. PT Central. 1998. Archived from 797:10.1016/b978-0-444-52902-2.00019-9 476:embedded into the APL tendon is a 25: 516:, and normally absent in humans. 164:musculus abductor pollicis longus 2176: 1398:10.1111/j.1469-7580.2008.00865.x 1228:10.1111/j.1469-7580.2009.01109.x 720:10.1016/b978-044310028-4.50007-2 610: 598: 586: 574: 562: 550: 538: 526: 293:The insertion is divided into a 1185:10.1590/S1807-59322009000200014 605:Abductor pollicis longus muscle 593:Abductor pollicis longus muscle 581:Abductor pollicis longus muscle 569:Abductor pollicis longus muscle 557:Abductor pollicis longus muscle 545:Abductor pollicis longus muscle 533:Abductor pollicis longus muscle 40:Abductor pollicis longus muscle 1834:extensor carpi radialis longus 1761:flexor digitorum superficialis 889:Bravo, Barco & BullĂłn 2010 787:, Peripheral Nerve Disorders, 785:Handbook of Clinical Neurology 1: 347:posterior interosseous artery 271:, below the insertion of the 101:Posterior interosseous artery 1034:10.1371/journal.pone.0022165 472:A small, lens-shaped radial 333:after it passes through the 327:posterior interosseous nerve 239:. Its major function is to 2044:flexor digiti minimi brevis 944:Aversi-Ferreira et al. 2011 2215: 1786:flexor digitorum profundus 864:"Abductor pollicis longus" 834:"Abductor pollicis longus" 373:(15%); or the base of the 207:Anatomical terms of muscle 29: 2199:Muscles of the upper limb 1474: 1078:10.1007/s11999-009-1059-4 480:state found in all known 205: 44: 2011:abductor pollicis brevis 1895:extensor pollicis longus 1890:extensor pollicis brevis 1885:abductor pollicis longus 946:, Results and Discussion 683:abductor pollicis brevis 667:abductor pollicis longus 659:extensor pollicis brevis 629:Extensor pollicis longus 421:extensor pollicis brevis 367:opponens pollicis brevis 307:abductor pollicis brevis 288:extensor pollicis brevis 225:abductor pollicis longus 147:Adductor pollicis muscle 18:Abductor pollicis longus 1350:10.1073/pnas.0504899102 508:that first appeared in 2049:abductor digiti minimi 2039:opponens digiti minimi 2006:flexor pollicis brevis 1855:extensor carpi ulnaris 1850:extensor digiti minimi 1791:flexor pollicis longus 1329:Proc Natl Acad Sci USA 956:Michilsens et al. 2009 675:flexor pollicis brevis 663:flexor pollicis longus 223:In human anatomy, the 32:anatomical terminology 1924:bicipital aponeurosis 1751:flexor carpi radialis 1066:Clin Orthop Relat Res 791:, Elsevier: 311–366, 486:genera except in the 403:) and flex the hand. 390:carpometacarpal joint 303:first metacarpal bone 277:interosseous membrane 76:Interosseous membrane 2118:extensor retinaculum 1756:flexor carpi ulnaris 1019:(7/e22165): e22165. 712:Atlas of Acupuncture 634:De Quervain syndrome 1946:antebrachial fascia 1880:anatomical snuffbox 1691:triangular interval 1648:intermuscular septa 1540:infraspinous fascia 1535:supraspinous fascia 1341:2006PNAS..103..379S 1025:2011PLoSO...622165A 967:Tocheri et al. 2008 932:van Oudenaarde 1991 755:(1918), see infobox 433:crab-eating monkeys 267:of the body of the 245:anatomical snuffbox 2148:palmar aponeurosis 2143:flexor retinaculum 2123:extensor expansion 1967:osborne's ligament 1845:extensor digitorum 1781:pronator quadratus 1681:quadrangular space 1615:articularis cubiti 979:Salesa et al. 2006 897:Hazani et al. 2008 639:Bennett's fracture 30:This article uses 2164: 2163: 2160: 2159: 2156: 2155: 2018:adductor pollicis 2001:opponens pollicis 1975: 1974: 1910: 1909: 1799: 1798: 1701: 1700: 1548: 1547: 1300:(Pt 3): 509–515. 1152:10.1159/000147623 1140:Acta Anat (Basel) 920:Mehta et al. 2009 908:Mehta et al. 2009 729:978-0-443-10028-4 679:adductor pollicis 671:opponens pollicis 454:(compared to the 311:opponens pollicis 233:extrinsic muscles 221: 220: 216: 16:(Redirected from 2206: 2181: 2180: 2172: 2136: 2111: 2104: 1986: 1902:extensor indicis 1868: 1817: 1810: 1774: 1734: 1727: 1718: 1686:triangular space 1577:coracobrachialis 1565: 1472: 1448: 1441: 1434: 1425: 1419: 1409: 1372: 1362: 1352: 1319: 1309: 1284: 1274: 1249: 1239: 1206: 1196: 1163: 1134: 1124: 1099: 1089: 1072:(5): 1305–1309. 1056: 1046: 1036: 993: 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1928: 1884: 1865: 1815:superficial: 1814: 1771: 1732:superficial: 1731: 1712:compartments 1675: 1647: 1559:compartments 1484:rotator cuff 1389: 1385: 1332: 1328: 1297: 1293: 1262: 1258: 1219: 1215: 1176: 1172: 1143: 1139: 1115:(e53): e53. 1112: 1108: 1069: 1065: 1016: 1012: 985: 974: 962: 951: 939: 927: 915: 910:, Discussion 903: 884: 874:25 September 872:. Retrieved 868:the original 843:25 September 841:. 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Index

Abductor pollicis longus
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

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