Knowledge

Axonotmesis

Source 📝

17: 70:
Axonotmesis mainly follows a stretch injury. These stretch injuries can either dislocate joints or fracture a limb, due to which peripheral nerves are severed. If the sharp pain from the exposed axon of the nerve is not observed, one can identify a nerve injury from abnormal sensations in their limb.
344:, and because these cells are intact this kind of nerve injury can be cured and normal feeling and sensations can be restored. Surgery can be done in order to help the nerve heal. The surgery will help with nerve regeneration, providing guidance to the nerve sprouts on where to attach on the 305:(EMG) is a medical test performed to evaluate and record the electrical activity (electromyogram) produced by skeletal muscles using an instrument called electromyograph. In axonotmesis, EMG changes (2 to 3 weeks after injury) in the denervated muscles include: 243:
contains sensory fibers, motor fibers, or both. Sensory fibers lesions cause the sensory problems below to the site of injury. Motor fibers injuries may involve lower motor neurons, sympathetic fibers, and or both.
837: 400: 599: 321:
EMG test is often performed together with another test called nerve conduction study, which measures the conducting function of nerves.
281:
In assessment, sensory-motor defects may be mild, moderate, or severe. Damage to motor fibers results in paralysis of the muscles.
329:
segment (3 to 4 days after injury). According to NCV study, in axonotmesis there is an absence of distal sensory-motor responses.
871: 490: 672: 384:
The prognosis is usually good in terms of recovery. Rate of recovery depends on the distance from the site of injury, and
348:
side of the injury. Damaged nerve axons can reattach themselves after surgery. Treatment of axonotmesis also consists of:
642: 622: 474: 772: 51:
remain intact. Motor and sensory functions distal to the point of injury are completely lost over time leading to
807: 637:
Otto D. Payton & Richard P. Di Fabio et al. Manual of physical therapy. Churchill Livingstone Inc. Page 24.
289:). In these cases, the prognosis depends on the amount of damage and the degree of functional impairment. 710: 705: 440: 575: 853: 665: 574:
Prince, Jim McMorran, Damian Crowther, Stew McMorran, Steve Youngmin, Ian Wacogne, Jon Pleat, Clive.
322: 72: 812: 615:
Nerve and Nerve Injuries, 1st Edition. Vol 2: Pain, Treatment, Injury, Disease and Future Directions
883: 757: 286: 866: 832: 789: 730: 697: 435: 888: 878: 762: 689: 445: 388: 255: 163: 52: 822: 817: 779: 391:
can go up to 1 inch per month. Complete recovery can take anywhere from 6 months to a year.
914: 767: 658: 8: 784: 747: 341: 799: 742: 551: 518: 271: 59:, or loss of blood supply. Axonotmesis is usually the result of a more severe crush or 893: 725: 720: 638: 618: 593: 556: 538: 470: 425: 737: 546: 530: 491:"Nerve Injury (Neuropraxia, Axonotmesis, Neurotmesis) and Healing | Healthhype.com" 365: 352: 302: 76: 28: 265: 169: 282: 275: 251: 534: 908: 542: 285:
injuries create more signs and symptoms from sensory-motor problems (such as
36: 861: 681: 560: 415: 337: 261: 84: 75:(NCV) test to completely diagnose the issue. If diagnosed as nerve injury, 842: 576:"Sunderland classification of nerve injuries - General Practice Notebook" 430: 420: 410: 212: 186: 156: 80: 64: 44: 40: 355:
or Occupational Therapy. Physical or Occupational therapy aims include:
827: 752: 218: 48: 16: 517:
Menorca, Ron M. G.; Fussell, Theron S.; Elfar, John C. (2017-05-05).
60: 345: 196: 56: 224: 326: 650: 405: 316: 240: 200: 519:"Peripheral Nerve Trauma: Mechanisms of Injury and Recovery" 340:
provide the nerve with protection through the production of
385: 32: 177: 87:, or irregular connections and contractions of muscles. 206: 150: 95:
There are two kinds of nerve injury classifications:
838:
Spinal cord injury without radiographic abnormality
516: 401:Connective tissue in the peripheral nervous system 274:that innervate the skin and blood vessels of the 906: 464: 666: 467:Critical Pathways in Therapeutic Intervention 465:Saidoff, David C.; McDonough, Andrew (2002). 598:: CS1 maint: multiple names: authors list ( 325:study shows loss of nerve conduction in the 79:performed after 3 to 4 weeks shows signs of 39:are damaged in this kind of injury, but the 31:of one of the extremities of the body. The 673: 659: 317:Changes in NCV (nerve conduction velocity) 550: 375:Use of assistive devices (Orthotic needs) 90: 15: 617:. London: Academic Press. p. 604. 612: 292: 907: 654: 254:that send sensory information to the 178:Sunderland's Stage III classification 512: 510: 469:. Missouri: Mosby Inc. p. 262. 207:Sunderland's Stage IV classification 151:Sunderland's Stage II classification 13: 573: 14: 926: 507: 297: 230:Surgery is required for treatment 773:Chronic traumatic encephalopathy 808:Anterior spinal artery syndrome 680: 631: 606: 567: 483: 458: 1: 451: 234: 379: 332: 309:Fibrillation potentials (FP) 7: 711:Intraventricular hemorrhage 706:Intraparenchymal hemorrhage 613:Goubier, Jean-Noel (2015). 394: 183:Endoneurial tube is damaged 10: 931: 247:Assessment items include: 884:Injury of accessory nerve 852: 798: 688: 535:10.1016/j.hcl.2013.04.002 73:nerve conduction velocity 758:Post-concussion syndrome 361:Maintain range of motion 287:brachial plexus injuries 20:Axonotmesis of the nerve 867:Peripheral nerve injury 833:Posterior cord syndrome 790:Penetrating head injury 731:Subarachnoid hemorrhage 698:Intracranial hemorrhage 441:Seddon's classification 436:Peripheral nerve injury 264:that allow movement of 71:A doctor may ask for a 889:Brachial plexus injury 879:Wallerian degeneration 813:Brown-Séquard syndrome 763:Second-impact syndrome 690:Traumatic brain injury 446:Wallerian degeneration 256:central nervous system 164:Wallerian degeneration 53:Wallerian degeneration 21: 823:Central cord syndrome 818:Cauda equina syndrome 780:Diffuse axonal injury 168:Can be detected with 91:Injury classification 19: 768:Dementia pugilistica 580:www.gpnotebook.co.uk 342:Nerve Growth Factors 312:Positive sharp waves 293:EMG and NCV findings 27:is an injury to the 785:Abusive head trauma 748:Cerebral laceration 159:tube remains intact 800:Spinal cord injury 743:Cerebral contusion 495:www.healthhype.com 272:Sympathetic fibers 22: 902: 901: 894:Traumatic neuroma 854:Peripheral nerves 726:Epidural hematoma 721:Subdural hematoma 426:Neuroregeneration 370:Patient education 276:four extremities. 148: 147: 922: 738:Brain herniation 675: 668: 661: 652: 651: 645: 635: 629: 628: 610: 604: 603: 597: 589: 587: 586: 571: 565: 564: 554: 514: 505: 504: 502: 501: 487: 481: 480: 462: 366:muscular atrophy 353:Physical therapy 303:Electromyography 195:Intrafascicular 98: 97: 77:electromyography 29:peripheral nerve 930: 929: 925: 924: 923: 921: 920: 919: 905: 904: 903: 898: 848: 794: 684: 679: 649: 648: 636: 632: 625: 611: 607: 591: 590: 584: 582: 572: 568: 515: 508: 499: 497: 489: 488: 484: 477: 463: 459: 454: 397: 382: 335: 319: 300: 295: 266:skeletal muscle 237: 209: 192:Scarring occurs 180: 153: 93: 12: 11: 5: 928: 918: 917: 900: 899: 897: 896: 891: 886: 881: 876: 875: 874: 872:classification 869: 858: 856: 850: 849: 847: 846: 845:(Quadriplegia) 840: 835: 830: 825: 820: 815: 810: 804: 802: 796: 795: 793: 792: 787: 782: 777: 776: 775: 770: 765: 760: 750: 745: 740: 735: 734: 733: 728: 723: 715: 714: 713: 708: 700: 694: 692: 686: 685: 678: 677: 670: 663: 655: 647: 646: 630: 623: 605: 566: 529:(3): 317–330. 506: 482: 475: 456: 455: 453: 450: 449: 448: 443: 438: 433: 428: 423: 418: 413: 408: 403: 396: 393: 381: 378: 377: 376: 373: 372: 371: 368: 362: 359: 334: 331: 318: 315: 314: 313: 310: 299: 298:Changes in EMG 296: 294: 291: 283:Nervous plexus 279: 278: 269: 259: 252:Sensory fibers 236: 233: 232: 231: 228: 222: 221:remains intact 216: 208: 205: 204: 203: 199:occurs due to 193: 190: 189:remains intact 184: 179: 176: 173: 172: 166: 160: 152: 149: 146: 145: 142: 138: 137: 134: 130: 129: 126: 122: 121: 118: 114: 113: 110: 106: 105: 102: 92: 89: 9: 6: 4: 3: 2: 927: 916: 913: 912: 910: 895: 892: 890: 887: 885: 882: 880: 877: 873: 870: 868: 865: 864: 863: 860: 859: 857: 855: 851: 844: 841: 839: 836: 834: 831: 829: 826: 824: 821: 819: 816: 814: 811: 809: 806: 805: 803: 801: 797: 791: 788: 786: 783: 781: 778: 774: 771: 769: 766: 764: 761: 759: 756: 755: 754: 751: 749: 746: 744: 741: 739: 736: 732: 729: 727: 724: 722: 719: 718: 716: 712: 709: 707: 704: 703: 701: 699: 696: 695: 693: 691: 687: 683: 676: 671: 669: 664: 662: 657: 656: 653: 644: 643:0-443-08499-8 640: 634: 626: 624:9780128026533 620: 616: 609: 601: 595: 581: 577: 570: 562: 558: 553: 548: 544: 540: 536: 532: 528: 524: 520: 513: 511: 496: 492: 486: 478: 476:0-323-00105-X 472: 468: 461: 457: 447: 444: 442: 439: 437: 434: 432: 429: 427: 424: 422: 419: 417: 414: 412: 409: 407: 404: 402: 399: 398: 392: 390: 387: 374: 369: 367: 363: 360: 357: 356: 354: 351: 350: 349: 347: 343: 339: 338:Schwann cells 330: 328: 324: 311: 308: 307: 306: 304: 290: 288: 284: 277: 273: 270: 267: 263: 260: 257: 253: 250: 249: 248: 245: 242: 229: 226: 223: 220: 217: 214: 211: 210: 202: 198: 194: 191: 188: 185: 182: 181: 175: 171: 167: 165: 162:Emergence of 161: 158: 155: 154: 143: 140: 139: 135: 132: 131: 127: 124: 123: 119: 116: 115: 111: 108: 107: 103: 100: 99: 96: 88: 86: 85:fibrillations 82: 78: 74: 68: 66: 62: 58: 54: 50: 46: 42: 38: 37:myelin sheath 34: 30: 26: 18: 862:Nerve injury 717:Extra-axial 702:Intra-axial 633: 614: 608: 583:. Retrieved 579: 569: 526: 523:Hand Clinics 522: 498:. Retrieved 494: 485: 466: 460: 416:Nerve injury 389:regeneration 383: 336: 320: 301: 280: 262:Motor fibers 246: 238: 174: 170:Tinel's sign 141:Neurotmesis 133:Neurotmesis 125:Neurotmesis 117:Axonotmesis 109:Neurapraxia 94: 81:denervations 69: 24: 23: 915:Neurotrauma 843:Tetraplegia 682:Neurotrauma 431:Neurotmesis 421:Neurapraxia 411:Nerve fiber 358:Pain relief 227:could occur 213:Perineurium 187:Perineurium 157:Endoneurial 104:Sunderland 65:neurapraxia 45:perineurium 41:endoneurium 25:Axonotmesis 828:Paraplegia 753:Concussion 585:2017-05-05 500:2017-05-03 452:References 235:Assessment 219:Epineurium 215:is damaged 128:Grade III 49:epineurium 35:and their 543:0749-0712 380:Prognosis 364:Reducing 333:Treatment 136:Grade IV 120:Grade II 61:contusion 909:Category 594:cite web 561:23895713 395:See also 346:proximal 197:fibrosis 144:Grade V 112:Grade I 57:ischemia 552:4408553 225:Neuroma 101:Seddon 55:due to 641:  621:  559:  549:  541:  473:  386:axonal 327:distal 406:Nerve 241:nerve 201:edema 63:than 33:axons 639:ISBN 619:ISBN 600:link 557:PMID 539:ISSN 471:ISBN 83:and 47:and 547:PMC 531:doi 323:NCV 911:: 596:}} 592:{{ 578:. 555:. 545:. 537:. 527:29 525:. 521:. 509:^ 493:. 239:A 67:. 43:, 674:e 667:t 660:v 627:. 602:) 588:. 563:. 533:: 503:. 479:. 268:. 258:.

Index


peripheral nerve
axons
myelin sheath
endoneurium
perineurium
epineurium
Wallerian degeneration
ischemia
contusion
neurapraxia
nerve conduction velocity
electromyography
denervations
fibrillations
Endoneurial
Wallerian degeneration
Tinel's sign
Perineurium
fibrosis
edema
Perineurium
Epineurium
Neuroma
nerve
Sensory fibers
central nervous system
Motor fibers
skeletal muscle
Sympathetic fibers

Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.