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Questions answered by mistakenidentity    (Expert Rank: 2444) Member has an expert rating of 100+
 

In 1962 a boy playing in a train yard fell under a train. His right arm was cut off cleanly by the train wheel. Surgeons reattached the arm, sewing nerves and vessels back together. The boy was told he should eventually regain the use of his arm but that it would never be strong enough to pitch a baseball. Explain why full recovery of strength was unlikely.

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Question found in Personal Health Issues
When the brain tells the body to breathe, for example, it does it. When you make a fist, you have to put effort into it or it won't happen because the muscles and tendons are not naturally designed to do this autonomously. Just like a weld that joins two very strong pieces of metal together. The weld is stronger than the metal but it is only as strong as the welder's skill in keeping the metal from fatigue during the process. This can often be the weakest link due to many unforeseen circumstances as such as a reattached limb. The limb will often fail to make the correct or complete connections with all of the nerves, all of the muscles, all of the tendons, all of the blood vessels, even the bones are weaker due to the separation and fusion.

Once a nerve has been severed, and the longer it stays that way, the longer it takes to learn the behavior again. Sometimes this is the reason for such hasty surgeries since the limb can't be attached again if too much time has passed so they do it quickly and as accurate as possible in an effort to at least regain some of the use of it after the trauma has occured. The surgery is traumatic as well due to scar tissue, hardware, almost certain infection, and sustaining the life of the person while going thru this process.

Doctors are learning even more about this process every day but it is such a risk to the patient due to past experiences and knowledge that they will not subject the patient to a better prognosis in the event that it all could easily go wrong for the patient in this heroic attempt of helping him to have a normal life again.



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Cynthia, a 16-year-old girl, was rushed to the hospital after taking a bad spill off the parallel bars. After a complete neurological workup, her family was told that she would be permanently paralyzed from the waist down. The neurologist then outlined for Cynthia’s parents the importance of preventing complications in such cases. Common complications include urinary infection, bed sores, and muscular spasms. Using your knowledge of neuroanatomy, explain the underlying reasons for these complications.

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Question found in Health & Fitness In General
The basic reasoning for prevention of possible or likely complications are pretty simple. While a person without paralysis is able to tell if an infection, injury, muscle cramps (which have side effects), and bed sores, is present, a paralyzed person cannot feel the onset of such problems. With limited movement because of the injury, the body can develop atrophy, (Pathology. A wasting or decrease in size of a body organ, tissue, or part owing to disease, injury, or lack of use: muscular atrophy of a person affected with paralysis).

It is often the case that a caregiver will have to be diligent in watching for these symptoms because it can become life-threatening to the patient without them being aware of the seriousness of it. The lack of use of the legs can cause DVT and the muscles easily deteriorate as well. I am sorry that this has happened to her and wish her and the family the best of luck.

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My refrigerator keeps tripping the GMA socket. What can the problem be?

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Question found in Electronics and Gadgets In General
You may have a problem within the refrigerator if the fuse is not at fault by not being the correct rating as designed for the circuit. This could also be overloading the circuit's operating parameters. My NESC knowledge is pre-historic , nonetheless, if you plug something in and it blows the fuse, it's time to step back, pause and call the electrician if you aren't absolutely sure of what you are dealing with. I am assuming that GMA is the glass fuse you are describing which can be found in some older homes. Without knowing the actual load and design of the circuit, I can't reliably help you so I would suggest the safest option will be to let an electrician look at it. It may be a simple fix and most are. Good luck to you.

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After lumbar surgery, I get electric pain in my second toe. What causes it and what can I do about it?

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Question found in Chiropractic & Osteopathy
It really depends on how long it has been since surgery and where the surgical work was located in relation to the nerves, scar tissue, hardware installed, to the area in which this toe is affected. The lumbar area has many nerves which affect your legs, feet and toes and can become inflamed at times, especially if strained or after surgery. If this is an individual toe, there are some tests you doctor can do to rule out other areas which may be causing this, thus narrowing it down to a couple of suspects. One test will be using an electric shock generated from certain points by the doctor or nurse, which is not painful, just annoying. Good luck to you.

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I have back pain that goes down the right side to my foot. I also have a small lump at the base of my spine which is painful to touch. What is wrong with me?

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Question found in Health & Fitness In General
This might be inflammation due to increased or strained activity. The fact that it is painful to touch and radiates down to your foot is closely related to your lumbar area of your spine. If this does not go away, you would be safe to go to your doctor and get it checked out. It may be more serious than you think and would better serve you to be cautious while bending and especially lifting. good luck.

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What is logic?

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Question found in Miscellaneous
Based on true/false reasoning. It is not logical to go jump off a bridge but it is logical within the correct circumstances. Is it high enough to jump off with a parachute to open correctly, or maybe a bungee cord................or just admire the view? For me, enjoying the view would be logical.

A circuit can use logic. If you push a button to activate an electronic circuit or to turn on a light, then this should be "true" in logic. Off would be false. It can apply to many things but logic is usually a relative term used in computers and electronic devices. Good question.

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I am a female with a female friend I've known for about 12 years. Our tastes and mutual interests have changed considerably over the years and I no longer wish to further the friendship. She has always been good to me, and vice versa, but she can ramble on for hours about nothing and wastes my time. How do I deal with this?

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Question found in People & Relationships In General
A true friend is a good listener. You may have many activities that keep you so busy that you don't have time for her right now. She may have too much time on her hands. This is not so much as having nothing in common, only to know that you may very well be drifting apart and by your being less available, she will eventually find someone else who has the time for her. If you are too blunt, you may hurt her feelings more than anything and without realizing this.

Often, I just don't run and answer the phone every time it rings anymore and I let my big dogs answer the door out at the gate almost all of the time. This mostly deters the criminal element and salesmen by a great margin, but also lets my neighbors, family and friends know that they should call before coming over because I will only answer the door when I can, not when it's inconvenient.
They all have learned this about me and have no problem with it because they actually prefer to be treated the same at their homes. It is the honest way for me to screen unannounced strangers without having to tell anyone to go away and risk losing friendships in which I hold dear.

Some may see this as anti-social, but does this also apply to having a secretary??, there are many discrete ways of saying or relaying the message, "do not disturb", without getting so serious that you can't have friends. They will come and go in life but a true friend will actually understand if you have become a more private person for whatever reason. Good luck to you.

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Why would a man say he doesn't love you when he said he was in love with you the week before and things had been going well?

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Question found in Intimate Relationships
Fear of getting too serious. He will sometimes say this to discourage you from pressing too hard with the relationship. He could have many other issues, as you may also have, but it is often a tactic used to separate a relationship in fear of something he doesn't feel comfortable with or something he does not want you to know. Be careful and good luck to you.

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Why it is important to agree aims, objectives and deadlines?

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Question found in Jobs & Careers
Most companies offer a product or a service to a "customer", whether it is the public or private, such as the military. Companies survive on a pretty strict budget and it is important that it keeps within that budget or it risks losing some important assets such as financing, property, future contracts or employees due to layoffs, etc. In order to stay within budget, a manager will set a deadline for certain goals to be met so he can pay the bills, add more people, add new machinery, and so on. It's done to allow for future growth, not to lose business. The bigger they get, the more money they can bring in and allow them to operate well within the next proposed budget which can be larger than the last one.

It's similar to planning a trip. You have to know when and where you want to go, how much it will cost for everything up to returning to your home and as detailed as having insurance and other "guarantees", that you will ensure that you complete the trip safely, with all parties involved, accommodations for all, and staying within the allotted amount you allow yourself to spend, including allowances for emergency situations which often occur and can be devastating to your trip and budget if not planned correctly.

It's pretty hard for an individual not involved in the operations of a company to see this but the company has to find people who are reliable enough to help them agree on goals, or deadlines to be able to step up to the next level of operations. It is a good thing for a company to include it's employees in it's planning or meetings no matter how ridiculous it may seem at times.

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Why can some animals like wolfs walk or run so silently while we can't? What is it that they have?

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Question found in Animals & Nature
A person can be trained to run or walk silently. This ability can be taught and highly refined. It is much to do with distraction and our own sense of hearing, sight and smell as with Hunters, elite military personnel, early Native Americans, etc. An animal's instinct is to be silent because he has natural predators who are also silent.

In humans, we have to crawl before walking, then walk before running and with our different abilities of hearing, it's kind of like the old saying,"if a tree falls in the woods, would there be any sound?" The answer would be described better as the range of frequencies that we can't hear, but the elephant can feel through his feet. Although he may not be close enough to hear the sound of the falling tree, he most certainly can tell that a tree has fallen.

The 4 soft paws of a big cat are an advantage because even though his weight is much higher than humans, he has the built-in harmony, distribution of weight and perfect synchronization of his legs and paws when moving. When you see him walk or run, he is a well-built and perfect predator due to his highly developed skill of silence and strength. Add to this their great sense of smell, vision, a better range of frequencies for hearing than humans, and you have the perfect hunter because it means that his life depends on it. Good question.

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