Radial Nerve Anatomy, Innervation Distribution Human Anatomy Kenhub
Hello again, everyone. This is Matt from Kenhub! And in this short tutorial, we will discuss the anatomy, innervation, and distribution of the radial nerve. The radial nerve serves as nerve supply for some muscles of the upper arm and most of the extensors of the forearm. This nerve is the direct continuation of the posterior cord of the brachial plexus. It courses between the brachioradialis and the brachialis to the elbow where it divides into a deep branch and a superficial branch at the level of the radial head. The superficial branch uses the brachioradialis as a guiding structure to reach the wrist.
Joint and arrives at the dorsum of the hand. In contrast, the deep branch penetrates the supinator muscle and continues to the extensors of the forearm. It is important to note that the branches supplying the brachioradialis and extensor carpi radialis longus branch off before the division of the radial nerve, whereas the nerve supplying the extensor carpi radialis brevis, the posterior interosseus nerve arises just after the division. The radial muscles this nerve supplies are the brachioradialis muscle, the extensor carpi radialis longus, and the extensor carpi radialis brevis. The radial musculature supports movements.
Of the elbow, hand, and radioulnar joints. The brachioradialis is mainly responsible for the lateral contour of the elbow and forearm. The extensor carpi radialis longus and the extensor carpi radialis brevis function as the dorsal extensors and the radial abductors of the wrist joint. They also contribute to a strong fist closure by stretching the flexor muscles of the hand and fingers prior to contraction. This tutorial is more fun than reading a text book, right If you want more tutorials, interactive quizzes, articles, and an atlas of human anatomy, click on the Take me to Kenhub button.
Cubital Tunnel Syndrome Entrapment Compressing Nerve at Elbow
Cubital tunnel syndrome is an injury to the nerve that's cutting behind the elbow out towards the hand. You felt this ulnar nerve in action when you whack your arm against the wall or a door. You feel that numbness and tingling in your little finger, that kind of ache that takes a couple of minutes to go away. What you've done is you've crushed that nerve between the wall and the bone, so that squish sets off those pain receptors in the fingers. Cubital tunnel syndrome is commonly a swelling or an inflammation around that nerve compressing.
It, causing pain, numbness, tingling or weakness in these fingers. Many times it's from muscle tendon attachments down near that elbow. As they get sore and swollen, they're increasing the inflammation and fluid in that area which is compressing that nerve. Sometimes we'll get a bursitis where that bursae is a fluid filled sac that's a shock absorber. When that gets injured it will swell up a little bit too. That swelling causes compression. So depending on the reason for the compression, we're going to do different treatments to get the pain down, get the inflammation down, get this area to heal so the compression comes.
Hot Tip Ultrasound Demonstration of Ulnar Nerve Dislocation Snapping Triceps Syndrome
Hi, my name is Jon Jacobson, and I will be demonstrating Ultrasound of the Cubital Tunnel. So to begin, I have the elbow extended. I'm using two palpable landmarks for orientation the medial epicondyle of the humerus, and the olecranon process. If you connect these two lines with the transducer, this will give you an axial plane of the cubital tunnel region and the ulnar nerve. If you look on the ultrasound image, you can identify the medial epicondyle bone contour and its apex. Directly behind that, you will see the hypo echoic ulnar nerve.
More posterior, you can identify the bone landmark of the olecranon process. Now, this area is not the cubital tunnel itself, but just proximal to it. If you move the transducer distally, you will find you will lose the bone landmarks and then we will see the ulnar nerve between the two heads of the flexor carpi ulnaris and under the arcuate ligament. Therefore, this is the true cubital tunnel. Backing up to the medial epicondyle, this is an ideal starting point given the bone landmarks. Its important not to scan with.
The elbow flexed at this point because what will happen is the triceps will be moved into view and therefore diagnosis of an Anconeus epitrochlearis will not be possible. However, with the elbow completely extended there should be nothing in the space between the medial epicondyle and the olecranon process other than the ulnar nerve. So we will look at the nerve proximally and distally in short axis, or enlargement, as it goes into the cubital tunnel. We can also look at the ulnar nerve in long axis, as shown here. Often this is.
Difficult as the nerve is not always in one single imaging plane. Lastly, we will look dynamically at the cubital tunnel region. We will again identify the medial epicondyle apex for bone landmark as shown here. I will then passively flex the patient, his elbow, and the key is to keep this bone landmark in view. If I lose the bone landmark, I stop moving my patient and I change my position of the transducer to get the bone landmark back in place, then I will continue movement. And I will do this passively back and forth.
Ulnar Nerve Entrapment
We see different types of nerve entrapments in the body. Everybody is familiar with carpal tunnel, but another very common one can happen at the wrist with the ulnar nerve. The ulnar nerve is going to cut on the outside of the hand towards the little finger. People start feeling numbness and tingling in these fingers. They can start feeling weakness or just kind of a not quite right sensation. What we see is across the wrist the ulnar nerve cuts out to the little finger, the median nerve is going underneath the flexor retinaculum to.
Control the inside of the hand or the thumb side. In a picture like this, you see that nerve branch cutting up coming out to the little finger and out to the ring finger next to it to control some of it strength and sensation. Anything that compresses this area of the wrist down on this section of the hand or in here can compress that nerve. We see a lot with cycling, something where were compressing and sitting on that handle bar for an extended period of time. But this can happen with anybody.
Who lifts, works out, does a lot with their hands, or is leaning on their hand quite often. So treatment and therapy is about decreasing that stress and strain or any inflammation in this area. If there's a nerve entrapment at this tunnel inaudible with the nerves cutting through, we're working our best to decrease inflammation there to help let that nerve heal again as it should. The different types of nerve entrapments can happen anywhere from the wrist to the elbow back up towards the neck. Treatment just depends on where is the entrapment at and what do.
Ulnar Nerve Entrapment MRT Treatment Success
Patient When I first came in, my symptoms were.I had numbness all through my left arm. I couldn't extend my ring finger all the way. I couldn't feel anything in my pinky finger. My wrist hurt. My elbow hurt. And I had limited range of motion.all around. And a lot of grip weakness, too. Interviewer And what was your diagnosis Patient Ulnar neuropathy. Um.pinched nerve from a bad bike fit. Before I came here I was banned from riding my bike, lifting weights, carrying dishes, carrying groceries.doing pretty much anything with my hand.
I couldn't open doors very well. I couldn't really open jars. At the Mettler Institute, I came in twice a week for half an hour session. Um, I've had eight sessions. And with every session it hurt a little bit, but at the end of the session there was a noticeable difference. Like my finger was a straighter. I could feel a little bit more. I could move a little bit more. Um, once I got to move onto grip training, every week my grip was getting stronger and I could start doing things again.
I've been going to the gym for the past couple weeks. And I get my bike back today, so I can start riding again. And I've been able to do daily tasks. I can open my door and jars and stuff, so. At the Institute, people here are very friendly, and it's a very comfortable setting to be in. It's easy to find. And it's a nice.office. At the Mettler Institute, there are actual doctors of physical therapy. So, they know how the body works, they know how to treat it and they know how to make it better.
Elbow Arthroscopy Indications, Benefits and Risks
Like any joint, the elbow can be treated arthroscopically. That is where the surgeon enters a joint with a small camera and can affect or carry out surgical treatments with very small incisions. The elbow has specific indications for arthroscopy that can be simple things such as small loose arteries or loose pieces of bone or cartilage that can be cleaned out with the help of the arthroscope. They can be common conditions like tennis elbow or they can be more complicated such as arthritis that involves a whole joint or even some fractures that can be treated.
Arthroscopically. The benefits of arthroscopic surgery of the elbow are that again like other joints the incisions and the procedure are smaller and typically recovery is faster. The elbow does have some areas that are very hard to get to with an open or traditional approach and those areas can be gotten to even easier with the arthroscopic approach and therefore some of the indications for arthroscopy are those difficult to reach areas and where the benefits then are just faster recovery and less surgery and may be even the ability to carry out some things that are very difficult or maybe even impossible.
To carryout open. There are some risks associated with elbow arthroscopy, like any joint. There are risks like infection or stiffness or nerve injury, but the elbow is particularly difficult to get to without being close to nerves and so the surgeon has to be very aware of this and comfortable with this. There is an increased risk of nerve injury with elbow arthroscopy, but studies do show that if the surgeon is experienced that risk is very small and very mitigated or controlled. The risk of stiffness is probably decreased with elbow arthroscopy.
Median Nerve Distribution, Innervation Anatomy Human Anatomy Kenhub
Hello, again. This is Matt from Kenhub. And in this tutorial, we will discuss the distribution, innervation, and anatomy of the median nerve. The median nerve derives from the lateral and the medial cords of the brachial plexus. Initially, it travels down on the medial side of the arm along with the brachial artery. At the elbow, it will continue its course under the aponeurosis of the biceps and between the two heads of the pronator teres. Once it gives off the antebrachial interosseous branch, it will initiate its trajectory in.
The forearm between flexor digitorum profundus and the flexor digitorum superficialis muscles serving as their supply. Once the nerve reaches the rest, it continues under the flexor retinaculum in the carpal tunnel going towards the palm of the hand. There, it divides into its terminal braches which will then innervate several structures including the thenar muscles. The median nerve provides motor branches to many muscles of the upper extremity, including the pronator teres, flexor digitorum superficialis and the profundus, and the most of the thenar muscles. This tutorial is more fun than reading a text book, right If you want more tutorials, interactive.
Ice Therapy Cryotherapy For Golfers Elbow
Hi welcome to another tutorial. In this tutorial I'm going to share with you ice therapy or cryotherapy. I'm going to show you how to release your pain with ice onwith elbow tendonitis or golfer's elbow or if you play a lot of baseball from pitching and throwing, pain on the bottom part of your arm. So what ice therapy or cryotherapy does to you When you massage the area with the ice, it helps slow down the inflammation and it also numbs the soft tissue. It slows down the nerve impulses and also interrupt pain spasm between the nerves.
And thirdly it decreases the tissue damage just have to remember when you apply the ice on your muscle do not apply more than two hours or it will cause a skin burn What you need to do or how do you put ice What kind of ice do you need Basically what you need is a styrofoam cup fill it with water and put it in the freezer and when it's done you just simply tear the edge off like such and you see the ice here. The styrofoam cup.
Helps the person who is applying the ice to the injured area from cold. Ok! now that we are ready we can apply the ice into the pain area. The golf elbow or the injured part from baseball or any sudden injury underneath the arm area on this area right here. I'm going to show you this way. The pain starts here and I'm going round circular and make sure you have a cloth in the bottom because as you can see the ice is melting. Let's go around the pain area, do a circular movement, circular movement this will help numb up the.
Area. What you need to remember with ice therapy or cryotherapy is you have to stop every five to ten minutes and the maximum time is two hours. Now that you have finish with the ice therapy, what do you do during the week to maintain or help relief the pain Goto this tutorial right here, right here on it! It will help you or show you what kind of stretches you need to do and what kind of massage or pain relief you can do to maintain or get rid of the pain.
In addition to that you can also soak your arm or the pain area with warm water and Epsom salt and that help release the muscle and loosen up all the tension and get rid of the pain. Thank you very much for watching and I hope this will help release your pain and if you have any questions or if you have any things that you do different please feel free to comment at the comment box below. And don't forget to visit my blog at StressedOutStressFree and sign up for the Stressed Out Stress Free Weekly newsletter. My name is Vincent Woon.
Cubital Tunnel Syndrome Ulnar Nerve Entrapment Everything You Need To Know Dr. Nabil Ebraheim
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