herniated disc L5/S1,

What are the Symptoms of L4 Nerve Damage? (2022 Complete Guide)

L4 nerve damage symptoms are a common complaint that we see at my physiotherapy practice. Today, we’re going to talk about the symptoms of L4 nerve damage and the ideal treatment to get it better as fast as possible!

What causes L4 nerve damage?

For the vast majority of people with L4 nerve damage, a herniated disc at L4/L5 is the cause of the problem. The L4/L5 disc is the spinal disc at the second-from-bottom level in the spine.

To understand this better, let’s talk a bit about the anatomy of the spine. Once you can picture the area of the body involved with L4 nerve damage, you’ll be able to understand why you’ve got your symptoms and what to do about it!

Before we dive in, please be aware that we are part of the Amazon Affiliate programme. This page may contain Amazon affiliate links, so if you choose to purchase a product for your sciatica that we recommend through a link on this page, we will receive a small commission at no extra cost to you. This helps us keep Overcome Sciatica alive! Thank you for your support. Please be assured that we only ever recommend products that we truly believe can help. 

The Human Spine

The human spine is made up of 24 vertebra (your “back bone”) which are funny shaped bones stacked on top of each other. These vertebrae start in the lowest part of your back and run all the way to the top of your neck.

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The top 7 vertebrae in the spine are called the “cervical” vertebrae. These make up your neck. We call them C1, C2, C3 etc… All the way down to C7 at the base of the neck.

Your mid-back is made up of the 12 thoracic vertebrae. These are called T1 to T12.

Your lower back is made up of 5 large lumbar vertebrae. These are called L1 to L5. L5 is the lowest vertebra in the spine. L4 is the second-lowest vertebrae in the spine, and so on.

Below L5 is your sacrum. Your sacrum is the funny shaped bone that joins the right and left parts of your pelvis together. Although the sacrum is one individual bone, there are 4 sets of nerves that exit the sacrum. We call these levels S1-S4.

Below your sacrum is your coccyx – the little bone that forms your ‘tail’!

The Spinal Discs

Between each vertebrae is a spinal disc – a tough sac made up of strong cartilage, filled with fluid.

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We name these discs based on the vertebrae above and below the disc. For example, if we are talking about the disc between L1 and L2, we would call it disc L1/L2.

So, when we are talking about the disc at L5/S1, we mean the final disc in the spine that sits between L5 (lowest vertebrae) and the sacrum (S1).

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That means that the L4/L5 disc is the disc above the L5/S1 disc. In the picture above, you can see the L4/L5 disc marked by a red spot.

Although the discs are much stronger than a donut, it might help to imagine the design of the discs like a jam donut – made up of tough outer layers filled with fluid.

The discs are very important. They help the spine move normally. Without them, we couldn’t walk, stand or move our spines.

The Nerves and Spinal Cord

Inside the bones in the spine, there is a long hollow passageway. Through this passageway runs the spinal cord, which starts in your brain and runs right down your back – the origin of all the nerves in our body.

From each level in the spine, a tiny portion of the spinal cord splits off and becomes a nerve. This nerve then leaves the spine and runs to a limb or other part of the body.

The nerves are vital to human life – they allow us to move, feel, talk and digest food.

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Here, the nerve roots are labelled to illustrate how a disc bulge in close proximity can irritate them.

The longest nerve in the human body is the sciatic nerve. It leaves the spine near the bottom of the back and runs all the way down the back of the leg into the toes. It is around an inch in diameter and allows the legs to work normally.

Without the sciatic nerve, you wouldn’t be able to use the muscles in your legs and you would be completely numb in large patches in your legs and feet.

What is a Herniated Disc L4/L5?

Over time, the discs in the spine can suffer normal wear and tear that occurs from repetitive movements throughout our lives. This process happens to everyone and isn’t automatically painful. (Here’s a study that proves this fact.)

However, if one part of the disc has weakened more than others, it can lead to something called a herniated disc.

This describes the event where the strong outer fibres of the disc split (or “herniate”) and the fluid within the disc leaks out at the region where the injury occurred.

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Here, you can see three disc bulges of different severity. The far right one is a herniated disc.

Because of how close the discs are to the nerves within the spine, some of the inner material of the herniated disc can touch the nerve, causing an array of symptoms along the course of that nerve.

If the fluid within the disc touches the sciatic nerve, the symptoms that follow are called “sciatica”.

The term ‘sciatica’ isn’t a disease in and of itself – just a word to describe the symptom of pain in the leg caused by the sciatic nerve. 

If someone suffers from a herniated disc at L4/L5, because this disc is extremely close in proximity to the sciatic nerve, the inner material from the disc often touches the nerve and can cause L4 nerve damage symptoms, which include leg pain, numbness and weakness in the leg.

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This is why a herniated disc L4/L5 is often one of the most problematic disc herniations that someone can experience.

 


 

What are the symptoms of L4 nerve damage?

There are a number of symptoms that can occur following L4 nerve root compression and L4 nerve damage. They can be alarming and scary for anyone who first experiences them.

symptoms of L4 nerve damage

Luckily, with this article, you’ll understand what’s normal and why you are going through these issues which will hopefully alleviate some of your concern.

Common symptoms of L4 nerve damage:

  • Back Pain: Perhaps the most common symptom of a L4 nerve damage caused by a disc is back pain. Now, although this may surprise you, not everyone experiences back pain with L4 nerve damage, but most people do. I was shocked at first when I would get clients who had a L4 nerve damage yet no back pain whatsoever, but it is certainly possible. Most people who suffer L4 nerve damage caused by a disc will experience an aching to sharp pain right across the lower back. It may be tender to touch and feel like the muscles are in spasm too.
  • Leg pain: L4 nerve damage is one of the most common causes of “sciatica”. Sciatica is the word we use to describe the sensation of nerve pain in the leg. It is usually shooting and can be severe – sometimes described by my clients as feeling like “being stabbed by a hot poker”. The typical pattern of the pain caused by L4 nerve damage can be seen in the image above. The pain might travel some or all of the way down the leg.
  • Pins and Needles/Numbness: L4 nerve damage can cause sensory changes in the leg and foot. Usually, the funny sensations will be present in the foot and toes and for some people this symptom can be worse than the pain. This symptom happens because the herniated disc is pressing against the nerve in the spine which stops the nerve from doing its job correctly. This means that some signals don’t get through properly and sensation isn’t felt normally.
  • Weakness in the Legs: Now, this symptom can be alarming and you should definitely head to your doctor if you feel weakness in one or both legs along with any of the other symptoms on this list. Weakness in the legs (particularly thigh and ankle weakness with L4 nerve damage) indicates a severe nerve compression from the herniated disc. If this sounds like you, it needs addressing as soon as possible. The common term used to describe ankle weakness caused by L4 nerve damage is “foot drop”.

What is the L4 Nerve Damage Pain Pattern?

With a L4 nerve damage and L4 nerve root compression, there is often a typical L4 pain pattern. The pattern will depend on whether the L5 nerve root is also affected, or whether just the L4 nerve root is affected.

The L4 pain pattern involves pain running down the FRONT of the leg to the INNER SHIN and then running to the INSIDE border of the foot, often to the big toe. You can see this pattern below:

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Uncommon symptoms of L4 nerve damage:

  • Leg shaking/spasms: Often confused with sciatica, these spasms cause the muscles to tense up and go into spasm. The best way to deal with this symptom is through a short course of muscle relaxants.
  • Problems with the Bladder and Bowel: This is an alarming symptom that needs addressing as quickly as possible by a doctor. This occurs when the nerves that allow the bladder and bowel to do their job are compressed by the herniated disc at L4/L5. If you suffer from incontinence (accidents), not being able to “go” or not being able to feel when your bladder/bowel are full, you need to speak to your doctor as soon as you can. If you cannot contact your doctor, a trip to the emergency room should be your next step.
  • Numbness in the Private Areas (or “Saddle” Region): This is another symptom that needs immediate investigation. Again, this indicates the lower nerves are compressed to the point that they can’t function properly. If this isn’t fixed soon, you might end up with a permanent problem. Again, a trip to the emergency room should be your next step.


What to Expect from L4 nerve damage:

When I worked in professional football, we would usually be able to tell the manager with reasonable accuracy exactly how long a player would be out for, depending on the injury he had.

For example, a mild ankle sprain would almost always be recovered by 3 weeks, while a hamstring injury might take 6 weeks.

However, with L4 nerve damage, it isn’t possible to accurately predict how long someone will suffer for.

If the nerve has been trapped or pinched for a long time, it may never get better. However, most people do make a recovery from this problem.

Almost always, the healthier you are in general, the faster you will get better.

Age also plays a role – people under 40 tend to recover a bit quicker than those over 40. However, other than that, herniated disc recovery time is difficult to predict.

As a general ball-park figure for you, most people SHOULD feel significantly better after 12 weeks following a L4 nerve damage caused by a bulging or herniated disc.

However, many don’t. And when you’ve been in pain for a long time, the body undergoes some changes which make recovery slower and more difficult.

That’s why ACTION is key – when you make a commitment to getting better, and do all the right things each day, you can usually accelerate herniated disc recovery significantly.

If you are worried about how long an L4/L5 disc injury might go on for, watch the video below where I’ll reveal the 5 key signs that indicate a herniated disc is healing:

On that note, my good friend, colleague and fellow international sciatica expert, Dean Volk, has a brand new sciatica relief video course available – ideal for anyone suffering who wants to accelerate the healing of a L4/L5 herniated disc.

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Check out Dean Volk’s “Kicking Sciatica OUT of the Butt!” Online Pain Relief Course Here!

I can proudly recommend Dean and his course for sciatica sufferers – because I’ve seen his incredible results first-hand. You can check out his course (and get lifetime access to the videos and bonus content) by clicking HERE.

L4 Nerve Damage from a Bulging Disc: Recovery Time

Day 1 – Day 14

  • Expect to be in a LOT of discomfort. Even though staying active as much as possible is key, you’ll need plenty of rest… And that is OK!
  • You’ll need to look at HOW the problem started – were you lifting and shifting with poor technique? You’ll need to address this later in the process.
  • How’s your diet and sleep? The more sleep you get and the “cleaner” you eat (click HERE for info on the RIGHT foods to eat), the faster you’ll get better from here.
  • You may need a short course of pain killers to get through the worst bit.
  • It’s worth getting an assessment from a doctor, especially if you are worried about any of your symptoms.

Day 14 – Day 28

  • The pain may have started to ease a bit by now, but you’ll likely have incredible stiffness in the lower back. We need to start addressing that soon!
  • This is the stage where gentle movement is key – in the back, in the leg and getting out for a few walks if you can manage.
  • Make sure to stay hydrated here – when you aren’t fully hydrated, the discs don’t function or recover as well. Drink more water than usual.

Day 28 – Day 56

Day 56 – Day 90

  • Now, you should start to be getting back to some normality, although you’ll still be feeling fragile.
  • You’ll need to take things easy – don’t rush back to anything. You should have someone who can help you at work when the pain starts to nag.
  • Don’t worry if you get occasional bad days – it’s normal! Recovery is hardly ever straightforward and few set backs aren’t uncommon.
  • Keep addressing the problem areas. If it’s weakness in your spine, you need to strengthen it. Don’t try and do this without guidance! Find a professional or invest in a proven system that works!

Treatment for Symptoms of L4 nerve damage

When we talk about treatment for a L4 nerve damage, we need to split this category into two parts: Lifestyle and Exercise.

With L4 nerve damage, treatment should always be guided by a qualified healthcare professional, due to the complexities of the injury. The following should not be taken as medical advice, rather as a rough guide to what I find has worked as the most effective treatment for L4 nerve damage.

In the following video, I’ll show you 8 strategies to speed up recovery from a herniated disc:

Treatment for L4 nerve damage – Part #1: Lifestyle

Diet

Not many people think of diet as an important aspect of recovery from a L4 nerve damage, but it plays an important role. It’s crucial that a diet is optimised for a recovery from L4 nerve damage.

This involves maximising anti-inflammatory foods: click HERE to learn more about anti-inflammatory foods for L4 nerve damage.

You’ll also need to minimise pro-inflammatory foods: click HERE to learn about which foods to AVOID when you have L4 nerve damage.

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General Activity

Most people do best when they keep generally active after L4 nerve damage. This means not taking too much time off work.

Most people should try to walk as much as they can within the realms of comfort. The best advice is to stop when pain starts, have a break, then get back to it.

One of my clients with a L4 nerve damage used to leave his house, walk up the road 100 yards, then come back. That was it for each day. But even those few hundred steps made a huge difference over a number of weeks.

Little and often is key – don’t overdo it. I tell my clients to stop as soon as the pain starts to worsen. Each day, they should be able to build their activity levels gradually.

Hydration

Drinking plenty of water is absolutely crucial. When you have L4 nerve damage or a disc compressing a nerve, any dehydration in that disc will make the compression worse.

This means that drinking 3-4 litres of water each day is critical to success and a highly undervalued facet of recovery.

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Sleep

Getting as much sleep as possible is incredibly important when you have L4 nerve damage (although, sciatica can make sleep more difficult, unfortunately).

Sleep is one of the key parts of a recovery from L4 nerve damage – sleep is when healing occurs. It’s nearly impossible to get better without ample sleep each night.

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One helpful tip to remember is that you can make up for lost hours of sleep with a nap if your pain tends to be worse at night. A 20-minute nap has been shown to be as effective as two hours of extra sleep in the morning in terms of restoration, some research shows.

Click HERE for a brief guide on sleeping better when you have sciatica.

Minimising Discomfort to Speed Up Recovery

Getting better from L4 nerve damage is just as much about avoiding making the problem worse as it is about doing extra things.

As a general rule of thumb, if an activity or position is making the pain worse, it is wise to change it – or you run the risk of delaying your herniated disc recovery time. 

Products That Can Help

For L4 nerve damage, there are a number of products that can help to improve pain and increase comfort. Here are a few of my top recommended products for L4 nerve damage relief:

#1 – TENS Machine for L4 nerve damage

TENS machines are useful for providing relief from pain and muscle spasms in the back and legs. They are a safe and effective way of relieving symptoms without any effort.

Below are 3 of my top recommended TENS machines for relief from L4 nerve damage:

TENSCare Perfect TENS Pain Relief Machine

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This TENS machine for L4 nerve damage has 8 preset programs so you don’t need to “tune it” yourself – just pick a setting and off you go! There is an option to purchase a ‘Value Pack’ which includes spare pads which I would definitely recommend.

Click HERE to view the TENSCare Perfect TENS Pain Relief Machine on Amazon US (closest match)

Click HERE to view the TENSCare Perfect TENS Pain Relief Machine on Amazon UK

TPN 200 Plus TENS Machine

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A super-simple yet sleek design, this TENS machine is perfect for those who want a highly effective model and are confident with using a TENS machine for L4 nerve damage pain relief. This unit doesn’t have a fancy display, so you can customise the settings to best suit your needs, tweaking and changing the frequency until you find one that works best for you.

Click HERE to view the TPN 200 Plus TENS Machine on Amazon UK

Click this link here to read about our 10 Best Recommended TENS Machines for Sciatica!

#2 – Lumbar Roll

A lumbar roll is a specially designed cushion that goes behind your lower back when sitting.

It increases the curve in the lower back, which many people find takes pressure off a herniated disc when sitting (which can be the worst position for a lot of people).

Here is a great option for a lumbar roll for the office, car and home:

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Click HERE to view the Supportiback® Posture Therapy Lumbar Support Cushion on Amazon

#3 – Topical Creams for Pain Relief from L4 nerve damage

There are a number of topical rubs and creams that can help to relieve pain from L4 nerve damage. In this section of the article, I’m going to share with you which products I believe to be the best creams for L4 nerve damage pain relief.

Always consult your doctor before starting any new medication, including creams.

Best Cream for L4 nerve damage Pain – Voltarol 

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Click HERE to view Voltarol cream for sciatica pain relief Amazon US

Click HERE to view Voltarol cream for sciatica pain relief Amazon UK

This product contains an anti-inflammatory that helps to calm any inflammation around the affected nerve root when someone is suffering from a L4 nerve damage.

What’s more, it also contains a natural product that will help to relax hyper-tense muscles and reduce pain, as well as provide a soothing effect to the area. For this reason, I would place it as my go-to and best cream for sciatica pain relief from a L4 nerve damage.

Second Best Cream for L4 nerve damage Pain – 5Kind Hemp Active Gel

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View this product on Amazon here

Hemp-based products have grown in popularity over the last few years. I always keep a close eye on the research regarding hemp and CBD – and the research shows mixed results.

Anecdotally, I’ve heard great things from users of hemp gel as a cream for sciatica pain relief from L4 nerve damage, and I had one client that used it to relieve back pain to great effect.

The product shown is one of the best on the market right now with over 11,000 ratings and an average of 4.5/5 stars!

Third Best Cream for L4 nerve damage Relief – FourFive CBD Muscle Rub

Click HERE to view this cream for sciatica pain relief on Amazon

I was never convinced by the CBD craze when it all began, but I am starting to see more compelling evidence for its use in some people, in some cases.

While I don’t believe CBD to be “magic”, I do feel this product has potential to relieve some of the muscle pain experienced in the lower back for many people with sciatica.

That is why this product makes it onto the list of the best creams for sciatica pain relief from L4 nerve damage. Check out the reviews of this product – they are really outstanding, with a perfect 5-star rating.

What Other Products Can Help for L4 nerve damage Relief?

I’m a big believer in the power of improving your general health when it comes to finding L4 nerve damage pain relief.

If you’re struggling with your mobility due to L4 nerve damage, one thing that might help is to address other general health issues like your weight, your diet and your general exercise.

If you’d like some tips on how to improve all of those aspects of your health, stave off injury and treat problems like herniated discs, why not grab a copy of my brand new book, Thriving Beyond Fifty? You can see more details below:

Top Tip: Grab a copy of my #1 Best-Selling book, Thriving Beyond Fifty for more health, wellness and recovery strategies! 

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L4 nerve damage Exercises

The most important thing to understand when it comes to L4 nerve damage and exercise is that everyone is different; a suitable exercise regime for one person with L4 nerve damage will be different for another with the same problem.

However, there are some exercises that are commonly useful for many people with L4 nerve damage.

The following list is not a “prescription” because some of these exercises are likely to be unsuitable for you. They are just suggestions of some which have worked for L4 nerve damage relief in the past for my clients.

Never try an exercise that makes your pain feel worse. Always go gently at first and build up slowly. Check with your GP before starting any new exercise programme. 

The exercises provided on this page for informational purposes only and are not designed to be a ‘prescription’ of any kind. Be sure to check with your healthcare provider before you begin any new exercise programme.

#1 – Cobra Pose

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Instructions:

  • Begin laying face-down on a firm surface like a mat on the floor or a hard mattress
  • Place your hands in line with your shoulders and gently push up, raising your torso off the floor
  • Keep your hips down on the floor
  • Only go as far as is comfortable – no need to get to full extension for a benefit!
  • Gently lower yourself to the starting position and repeat up to a maximum of 10 times.
  • Do a set of these 3-4 times per day

Who this is for:

Usually, people suffering with L4 nerve damage find this exercise one of the most useful for improving their symptoms. However, regardless of what is causing your sciatica, you should only persist with this exercise if it is comfortable to perform this movement. This exercise is a good place to start for those who have trouble bending forward.

Why this L4 nerve damage exercise works:

This sciatica exercise works because it involves movement of the lower back which encourages blood to flow to the injured area so healing can occur. Some researchers also believe this exercise causes a disc bulge to “centralise” into the disc where it can’t pinch on a nerve root.

#2 – Knee Rolls

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Instructions:

  • Lie on your back on a mat or a firm mattress
  • Bend your knees up halfway
  • Slowly and gently, allow both knees to roll over to one side only as far as is comfortable
  • Bring your knees back to the start position, then allow them to roll over to the opposite direction
  • Repeat for 30-seconds total, don’t rush the repititions and try to find a rhythm
  • Try to find time to do this exercise every 2-3 hours if you can

Who this is for:

This sciatica exercise is great for relieving any tension in tight muscles in the lower back. It is also a great way to begin to regain any lost rotation in the lower back following L4 nerve damage.

Why this L4 nerve damage exercise works:

By gently encouraging a slow, controlled rotation of the lower back, the muscles in your lower back will realise that it is OK to relax a little. This will bring about herniated disc pain relief.

#3 – McKenzie Side Bends

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Instructions:

  • Start standing next to a wall. Most people prefer to do this exercise with their painful leg being the one FURTHEST AWAY from the wall. However, try both sides and see which one is most comfortable for you – stick with that one.
  • Use your elbow and forearm to support yourself so you are leaning on the wall (1st picture)
  • Slowly and gently, let your hips “glide” towards the wall while keeping your feet in the same position.
  • Only go as far as is comfortable, then return to the start position.
  • Repeat this 10 times, have a break, and do 3 sets total.
  • If this exercise has worked for you, you may feel rapid relief in the painful leg and possibly slightly worsening back pain – rest assured this is a normal phenomenon.

Who this is for:

This exercise works really well for disc problems and is a mainstay for a treatment approach called “McKenzie”. It brings significant sciatica pain relief to many people and can work rapidly.

Why this L4 nerve damage works:

The McKenzie approach claims to work by encouraging the disc material called the “nucleus pulposus” to re-centralise into it’s inner middle. Whether or not this actually occurs hasn’t been proven in scientific literature but I have seen this exercise provide relief for many. Be sure to choose the direction that is least painful when performing this sciatica exercise.

#4 – Standing Extension

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Instructions:

  • Start standing normally.
  • Gently try to lean back. Only go as far as is comfortable.
  • If you feel able to, use your hands to provide support in the lower back allowing you to extend further (3rd picture)
  • Slowly return to the start position
  • Perform up to 10 repetitions, every few hours or so. Cut your set short as soon as you reach the first signs of pain.

Who this is for:

This is a great sciatica exercise for L4 nerve damage as well. It works especially well for people who have trouble leaning forward and is a more user-friendly/convenient version of #1 on this list. However, I find it to be slightly less effective compared to the Cobra pose as I find people tend to rely more on pelvic rather than spinal movement with this one. You should AVOID this exercise if you suffer from arthritis of the lower back or spinal stenosis.

Why this L4 nerve damage exercise works:

This exercise works in a similar way to #1 – it involves movement of the lower back, encouraging blood to flow to the injured area so disc healing can occur. This exercise may help a herniated disc to “centralise” into the inner disc where it can’t pinch on a nerve root.


Other Treatment Options for L4 nerve damage

Very rarely, surgery is required for L4 nerve damage. This intervention is reserved for those who have tried everything else and are still suffering.

It’s important to exhaust all non-surgical methods first, as you can’t reverse a surgery and the results from surgery are often underwhelming. Occasionally, surgery can make someone worse which is obviously devastating to hear about.

Another option includes injections, which can give pain relief down the course of the sciatic nerve.  From my experience, these have very underwhelming results for most people. However, they can occasionally be effective.

A safer and more effective option is to start a PROVEN exercise programme, designed specifically for people with L4 nerve damage. For people who are unable to come and see me at my clinic, the exercise programme I proudly recommend is Dean Volk’s online course, which you can read about below:

Check out Dean Volk’s “Kicking Sciatica OUT of the Butt!” Online Pain Relief Course Here!

I can proudly recommend Dean and his course for sciatica sufferers – because I’ve seen his incredible results first-hand. You can check out his course (and get lifetime access to the videos and bonus content) by clicking HERE.


 Another option:

Grab a copy of my #1 Best-Selling book, Thriving Beyond Fifty for more health, wellness and recovery strategies! 

Click HERE to view the book on Amazon UK!

Click here to view the book on Amazon USA!

The information on Overcome Sciatica should never be used as a substitute for medical advice from a doctor. Never put into action any tips or techniques from Overcome Sciatica without checking with your doctor first. Please see full terms of use here.

Conclusion

I hope you’ve found this article helpful. I think it’s useful to understand exactly why you’re suffering the way you are right now from L4 nerve damage, so the L4 nerve damage symptoms make more sense. I also hope you find some of the exercises in this article useful.

Remember, getting better from a L4 nerve damage is just as much about managing your day in a way that doesn’t make the symptoms worse as it is about doing exercises to fix it.

What did you think of this article? Was it useful? Leave me a comment below and let me know!

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