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  1. #1
    bidiboom is offline Permanently Banned
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    How can the nerves repair after a cut (like after a reconstructive operation)?

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    Hi guys,

    First of all I ask this question just for my own curiosity and I dont know the subject.. But I know that a nerve cell can be sometimes as long as 1metre in length(in lower limbs) and once its destructed, as in cutting of a limb, it cant work anymore.

    So how can it be possible to get a patient and his/her cut apart limb after an accident, and to put the cut limb back its own place with a reconstructive surgical operation? They do that, and the patients can begin to use their limbs back! If the nerves are all cut and unfunctional, how can it be possible?

    Thanks a lot for any info..

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    Catarro is offline Member 514 points
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    The nerves regenerate. At least peripheral nerves do, central nerves tend to do it less.

    When a nerve is cut, and axon is separated from the cell body, the axon degenerates. After doing this the cells that support and involve the axon (shawn cells) tend to stay alive and maintain sort of a channel from where the axon can grow back again from the cell body. Now, for this to happen, the fibres cut have to be put in contact surgically, otherwise the axon will not grow into the tube and there will be innervation and loss of function to the limb.

  3. #3
    bidiboom is offline Permanently Banned
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    O-o! Sorry for being late, despite I opened this thread, I didnt get an e-mail like for others I did.. thank you Catarro, its really enlightening.. years ago I read in a biology book that once nerve celles got damaged, they couldnt repair themselves and from then on it was a question mark in my mind.. but it should be written to mean a thing, and I read to understand another

    The same mechanism looks helping other degenerative neurological disorders as well, as long as this mechanism too is lost, like in Alzheimer's.. though this is just a guess based on the info you gave.. it will be interesting to learn more about them.. but lets first pass my SAT exams

    Thanks a lot again

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