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Joints, Muscles & Connective Soft Tissue

Principal Body System: Skeletal

Definition: The bones and joints of the body, and their associated soft tissues.

Function: Supports and protects the body; provides leverage; houses cells that produce blood cells; stores minerals.

Some say the horse is the greatest athlete in the world - certainly to see a healthy horse in motion is a joy to watch

The skeleton, connective tissue, muscles and joints all hold the body together, enabling it to stand, move and display the form. This brilliantly engineered mobility system is used and misused by physical wear and tear, and in the blink of an eye, problems can occur. Joint health and comfortable mobility depends not only on what use our horses are put to but also their diet, lifestyle and metabolic condition.

If the biochemical and metabolic processes are undernourished and out of balance, the body as a whole will be under greater strain to eliminate toxins, which can build up in the connective tissue and trigger the development of arthritis, which will eventually lead to the progressive destruction of the joint itself, aka DJD - degenerative joint disease.

Once a limb or joint is damaged, patience is needed for the time it needs to take to heal. Rehabilitating limb injuries can be expensive and time-consuming, and unfortunately usually associated with variable success rates, mainly due to the tendency for injury to reoccur.

There are many therapies for limb injuries, ranging from box rest to cold therapy, magnetic field application to shock wave therapy, non-steroidal anti-inflammatory drugs (NSAIDs) to major surgical procedures. However, few of these therapies are proven to be fully successful, with many being of questionable value, and worse still, some being potentially harmful. None appear any more or less effective than another for returning horses to full athletic function without re-injury.

Long and short, the most common injuries we see here at EquiNatural are when the supporting connective structure around the joints, specifically cartilage and muscle, breaks down, causing misalignment and inflammation. A vital part of the therapy is ensuring a clean, healthy bloodflow to the depleted tissues to maintain the body's own natural detoxing of the cellular debris from the affected area.

Keeping the joint tissue healthy is the first step to maintaining healthy limbs; however, no amount of joint supplements will keep your horse's joints healthy if you're not feeding a species-appropriate, quality diet packed with micronutrients and antioxidants.

Working horses need access to plenty of naturally occurring antioxidants to neutralise the free radicals being produced from heavy exercise. Good antioxidant properties can be found in blue-green algae (spirulina) and vitamin E (included as standard in our EquiVIta/VitaComplete mineral balancers); omega-3 fatty acids (via linseed) is an excellent and potent anti-inflammatory as well as certain nutrients such as sulfur, which is super-valuable for connective tissue and how it fills out the protein makeup to achieve optimal healthy and functioning musculature and overall build.

So what's out there to help?

The glucosamine and chondroitin story

For years, glucosamine and chondroitin have been the go-to support for joint care, but do they work? Studies on glucosamine and chondroitin reveal disappointing results - there's glucosamine that works - glucosamine sulphate, and there's naff glucosamine which doesn't - L-Glucosamine/Glucosamine HCL. As for chondroitin, forget it.

Here’s a quick snapshot at what these (human) studies revealed:

  • A two-year National Institutes of Health (NIH) study, the Glucosamine/chondroitin Arthritis Intervention Trial (GAIT), compared glucosamine HCL and chondroitin, both alone and together, with a prescription drug or inactive placebo for mild knee pain. Overall, there was no significant improvement in those with mild pain and limited improvement in those with moderate to severe pain with the supplements.
  • A 2010 Meta-Analysis of 3,800 people with knee and hip issues found that treatment with glucosamine, chondroitin or the combination was no better than a placebo.
  • A 2016 study of 164 patients with symptomatic knee concerns found that combined treatment with chondroitin and glucosamine HCL showed no superiority over a placebo for joint pain or functional use.
  • More than 20 studies looking at the effect of chondroitin on knee and hip pain have found no consistent evidence that it lessens pain.
  • Several studies have looked at whether glucosamine and chondroitin can benefit joint structure. Any improvements seen were too small to make a difference to the patients.

Then there' Green Lipped Mussels (GLM)

I’m not a fan of feeding GLM supplements to horses – while the active ingredient is good (glucosamine sulphate) – there’s only around 8-10% of the active ingredient. The rest is mussel meat, which is dried and ground and fed to horses, and many horses don’t like green lipped mussels.

There are a couple of issues here - mussels filter sea water so they’re ingesting and accumulating microscopic plastic particles and heavy metals, i.e. mercury/radioactive waste. Plus a horse’s gut hasn’t evolved to eat fish …

Often a GLM supplement has other ingredients, i.e. Hyaluronic Acid and Chondroitin sulphate. Hyaluronic Acid is degraded in the gut so never reaches the joint – it can be injected into the joint but only lasts around 24hrs so a regular daily jab into an already painful joint is never a good idea! Chondroitin sulphate reaches the joints but is often derived from pigs so, er, it’s a no from me.

So what to do?

Well, it's back to glucosamine, blended with MSM.

  • Always look for glucosamine sulphate - this is recognised by the liver as it's the natural version of glucosamine (HCL is synthetic) and gets into the joints with positive improvement; L-Glucosamine/glucosamine HCL doesn’t because try as it might, the liver can’t convert the HCL to a sulphate.
  • MSM (organic sulphur), basically offers the body a bit more sulphur to produce gluc.sulphate in the cells; the body normally produces enough sulphur to feed its cartilage cells so by feeding MSM the body can produce more gluc.sulphate, and yes, you’ll see improvement - not major, but combined with gluc.sulphate, along with a natural anti-inflammatory as per our JointReflexa, it's beneficial.

Cue collagen

Probably the most important factor in joint health is maintaining healthy levels of collagen; collagen is the cellular glue that helps hold together all the connective tissue in the body. It provides the structure for bones, muscles, tendons, joint cartilage, blood vessels and organs, including the entire digestive system, and, would you believe, it makes up a whopping 70% percent of the skin’s protein. Collagen plays a crucial role in how well the body functions.

Collagen is the most common protein – and the most abundant substance – in the body, second only to water. There are nearly two dozen types of collagen, but three types make up 80-90 percent of the collagen in the body: Types I, II, and III. Types I and III are found mainly in skin, bones, ligaments and tendons; joint cartilage is mostly type II collagen.

Age also plays a huge part. During the growing years, the body makes enough collagen to keep tissues pliable and youthful, but certainly in human terms, you can tell when this changes, usually from the mid-20's onwards. By the time us humans reach 40, the body’s ability to produce its own collagen drops around 25%, and by the time we've hit the big 6-Oh, our production is half our youthful levels - we can see the visible signs in facial wrinkles and creases. 80-years plus, and we've around four times less collagen, which is why our skin now sags more, typically noticeable on the face, neck and arms.

It's less easy to equate the aging process to equines, although you can usually see distinct sagging of face and neck skin in late 20/30-yo horses. However, from a joint health and comfort perspective, collagen is hugely important because it covers and cushions the surfaces of opposing bones, and because most domestic horses are typically in reasonable to high work levels, wear and tear also plays a major part in collagen levels deteriorating.

Maintaining collagen levels

Several nutrients can help boost collagen level. Antioxidants such as vitamin E, sulphur, silica and the omega EFAS (essential fatty acids are all important to collagen production. Vitamin C is also renowned for supporting the formation of collagen but there's no need to supplement it to horses as their gut microbes produce vitamin C; for us humans, though, we definitely need to add it to our diet.

Collagen fibres are somewhat unusual in having large amounts of two amino acids, hydroxylysine and hydroxyproline, both of which can be found in micronised linseed, which is invaluable for joint comfort. These two amino acids are important for formation of all three types of collagen and are also needed to provide the different collagen types with their appropriate amount of strength and flexibility. Several studies have shown that linseed supports connective joint tissue, and also reduces pain, inflammation and swelling of compomised and/or injured joints.

Summer Joints

Dehydration in the summer is a common cause of joint pain as the body’s need for fluids becomes greater as we sweat more in the heat.

I know it’s stating the obvious, but water really is a key ingredient in allowing the body to function properly, especially joints. Why? Water makes up the majority of the lubricant and cushioning in the body’s joints, particularly joint cartilage and synovial fluid, which is produced in the spaces between joints to help reduce friction and facilitate movement. Water also helps flush toxins out of the body which consequently helps to fight inflammation.

All this means that when the body becomes dehydrated, joint comfort suffers. Twin this with rock-hard, dried-out summer turnout and you’ve got concussive impact as well.

So, the take-home message is to encourage drinking – add electrolytes or extra salt to the feedbowl and offer drinking buckets with diluted salt – you may find horses prefer this over regular water.

As well as upping hydration, there are also effective herbs such as Willow and Arnica, a renowned herb for bruising, to help support general summer joint pain. Our Carmen always finds the hard summer ground challenging because of her twisted hoof from birth – it doesn’t take long before she’s head-bobbing on three legs. I keep her on a daily measure of our DuoBute in the feedbowl which effectively takes the edge off discomfort and inflammation. I also keep our ArnicaGel handy which has added camphor essential oil to cool aching legs.

Clicky joints? Don't panic ...

How many times have we heard clicky joints in our horses and panicked? June 2020 we had a friend' horse - the very gorgeous William - rehab with us to get sound following kissing spine surgery and various peripherals lamesness - his joints clicked so loudly that you could literally hear him from the other side of the field! Plus my husband's joints click like mad too, and I often see him deliberately stretching his knee or elbow joints out to undo the click. It doesn't hurt him, but he says his joints can ache depending on the weather, probably like most of us 😉

Back to the click, and it's all about the joint cartilages and it's protective 'synovial' fluid, the natural, slippery body fluid that cushions the ends of the bones to reduce friction between the articular cartilage of synovial joints during movement - a synovial joint is the type of joint found between bones that move against each other, i.e. shoulder, hip, elbow and knee.

A joint's synovial membrane produces substances called albumin and hyaluronic acid that give the synovial fluid its viscosity and slickness. When a joint is at rest, cartilage absorbs some of the synovial fluid, then when the joint's moving the synovial fluid is squeezed out of the cartilage, like water being squeezed out from a sponge. When my Connemara, Murphy, was younger, he developed a soft, squishy cyst-like bubble on his RF knee - synovial fluid leak.

This is all very common - what we're hearing is air bubbles in the synovial fluid and the snapping of tightly stretched ligaments as they slide off one bony surface onto another.

Overall, joint clicking is usually harmless, but it does imply that we should do some stretching exercises as soft-tissue tightness in itself can be a cause for injuries. When stretching we might hear a loud pop - this is what husband does when he senses air-pressure in the joints, followed by a sense of relief in the area - when you hear the click the stretching has done its job.

Can we prevent it? There’s only one solution - get moving. "Motion is lotion," as the saying goes. That said, it won't hurt to keep an eye on it as general joint stiffness can lead to arthritic-y symptoms in the future.

Plant support

The good news is that joint health is an area that can be positively supported with an excellent range of nourishing herbs that can help support peripheral mobility, joint health, collagen production and alleviation of discomfort. First up we aim to alleviate the discomfort with natural anti-inflammatories such as Willow and Meadowsweet, both of which are effective analgesics as well, with Meadowsweet being particularly useful as it's also a diuretic and hepatic which helps to clean and eliminate toxins.

We also need alteratives, aka blood cleansers, which gradually clean and rebalance the blood - burdock and nettle are excellent alteratives for joints, with nettle being super-nutritious as well as a renowned promotor of collagen formation. Diuretics such as celery seed and dandelion leaf support the kidneys to eliminate the metabolic waste, and we also use viburnum as an antispasmodic for arthritic muscle cramping.

Here's a list of other useful herbs:

  • Rosehips are one of the highest sources of vitamin C, with a reported 60 times more than citrus fruit. Horses love them too - pick them fresh from hedgerows and feed them as a treat - my Murphy loves nothing more than burying his nose deep into a wild rambling rose hedge and nibbling on rosehips while we're out on a trail. Vegetables high in vitamin C include broccoli and green leafy vegetables so you can always add these into the feedbowl or onto the pasture as a treat.
  • Calendula (marigolds) and garlic are both high in sulfur, with garlic also high in lipoic acid and taurine which help rebuild damaged collagen fibres.
  • Nettles are an ancient mineraliser, helping to build the body's own natural production of collagen with high levels of collagen co-nutrients such as calcium, silica and sulfur, making them an excellent source to help boost collagen receptors. According to some sources, one cup of infused nettles contains 300-500mg of calcium, as well as carotene, magnesium, vitamin A, B + K, potassium, and protein.
  • Avena sativa is also a significant source of silica, rich in body-building components, and helps to maximise absorption of calcium into the body.
  • Garlic is also high in sulfur, an important component for collagen production, as well as lipoic acid and taurine which help rebuild damaged collagen fibre.

Links

Blog Page - Joints & Mobility

Page updated May 2021