The sacroiliac joint is a vital component of the human skeletal system, connecting the sacrum (the triangular bone at the base of the spine) to the ilium (part of the pelvic bone). It is often referred to as the SIJ ( sacroiliac joint). It serves a crucial role in transferring forces between the upper body and lower extremities, providing stability and facilitating movement. It is a complex joint, and can create issues in us all, from women in pregnancy and post natal days, sportsmen and women, runners, and those with lower back or lumbar issues. IT has been reported that up to 70% of those suffering from persistent lower back pain will have some element of their pain stemming additionally from the SIJ.  

As the SIJ is a huge weight transfer ‘station’ for loads passing  from our lower extremities to our trunks, the joint is reinforced by many strong ligaments and surrounded by muscles that help support the pelvis and spine.

These reinforcements give the joint incredible stability to cope with the transmission of upper body weight and forces from the spine to the lower extremities during activities such as walking, running, and lifting. It absorbs shock and redistributes forces, ensuring efficient movement and minimizing stress on other joints.

Despite this stability, the SIJ is prone to dysfunction and pain. Injuries, arthritis, pregnancy, or imbalances in the surrounding muscles can lead to dysfunction of this joint, causing pain in the lower back, buttocks, or legs. Diagnosis and treatment of SIJ issues often involve a combination of physiotherapy and exercise. Long rehabilitation programs are often required to improve the muscular support and stability of this very important joint. These programs need to be sport specific, or tailored to each individual’s needs and can include core stability, pelvic alignment exercises, postural stability and gluteal strength.

“Anchor through your tailbone when you are on the mat”

This Pilates cue is a common one when it comes to ensuring your alignment and control of your ‘pelvis and spinal neutral’ postures in class. This is especially so when testing your deep abdominal strength in exercises such as table top. But what does this ‘tailbone’ actually look like? It is anatomically called the sacrum and may not look like what you imagine.

I often get asked about the coccyx with reference to this Pilates cue. When you study this image, you can see that your coccyx is just the tiny bone on the end of the sacrum. it is not through this that you find or control your ‘pelvis neutral’ of ‘heavy tailbone.’   

The sacrum articulates with the iliums of the pelvis on each side. These 2 joints are called the sacro-iliac joints ( you have a left one and a right one), and these are crucial role in providing stability, transmitting forces, and facilitating movement between the upper body and lower extremities.

For your joints, that is!

Synovial cells play a crucial role in joint lubrication. Found in the synovial membrane deep around your joints, these cells secrete a fluid called synovial fluid, which serves as a lubricant and shock absorber within the joint space. Synovial fluid has a viscous consistency and contains substances like hyaluronic acid and lubricin. They:

• provide both lubrication and nourishment to the articular cartilage
• reduce friction between the joint surfaces during movement.
• minimize wear and tear on the joint
• remove waste products from the joint
• provide nutrients to the surrounding structures deep within the joint
• ensure optimal joint function.

Did you know?

Your synovial cells become stimulated primarily via mechanical stress or movement of the joint. When the joint is actively used, the synovial cells respond to the mechanical forces exerted on them, triggering increased production and secretion of synovial fluid. Physical activity and exercise, therefore, play a crucial role in stimulating synovial cells and promoting joint lubrication.

If suffering from joint stiffness, or osteoarthritis, movement is critical to slow the progress of the degenerative process. Finding the right balance between movement, strength and minimal joint aggravation (pain and swelling) is the focus here, and your physio will know the best.

You know what we always say? Motion is the lotion baby!

You say arthrosis, I say arthritis.

X-ray and scan reports can be filled with some scary looking words to those not medically trained. Within these report notes, you may find complex, unfamiliar medical terms or phrases that make it difficult to decipher your results. Let’s break a few common ones down and demonstrate that they are not as nasty as you may first think.

• Arthrosis, also known as osteoarthritis, is a degenerative joint disease that affects the cartilage, a protective tissue between bones. It is the most common form of arthritis. Arthrosis occurs when the cartilage gradually wears away, causing pain, stiffness, and reduced mobility in the affected joint. Risk factors include age, genetics, obesity, joint overuse, and previous joint injuries. While any joint can be affected, arthrosis commonly affects the knees, hips, hands, and spine.

• Osteophytes, also known as bone spurs, are bony outgrowths that can develop in response to arthrosis or other conditions that cause joint damage. They often form at the edges of affected joints where cartilage has deteriorated. Osteophytes are the body’s attempt to stabilize the joint and compensate for the lost cartilage. However, they can also contribute to pain and further joint damage by interfering with joint movement or compressing nearby structures.

• Cortical thickening refers to an increase in the thickness of the outer layer of bone, known as the cortical bone. It can occur as a response to various factors, including repetitive stress, inflammation, and certain medical conditions. Cortical thickening is often observed in conditions such as osteoarthritis and osteoporosis, where the bone undergoes remodeling. This thickening can provide added strength and support to the affected bone, but in some cases, excessive cortical thickening can lead to structural abnormalities and compromise bone health.

• Exit foraminal narrowing refers to the narrowing of the exit space through which nerves exit the spinal column. It is commonly associated with degenerative changes in the spine, such as spinal stenosis or herniated discs. When the exit foramina narrow, it can compress the spinal nerves, leading to pain, numbness, tingling, and weakness in the corresponding area of the body.

• Bony oedema, refers to the accumulation of excess fluid within the bone marrow. It is often associated with various conditions, such as trauma, infection, or inflammation, including conditions like osteoarthritis or stress fractures. Bony edema can be seen on imaging studies and may indicate an underlying pathology. It is typically accompanied by pain, swelling, and tenderness in the affected area.

These are but a few of the big scary words that are often just there to explain the natural process of joint aging in us all. My advice when it comes to these reports?  Don’t be afraid to ask your friendly GP or physio to sit and take the time to  explain your results better. After all, it is your joint they are busy peering at!

Osteoarthritis is commonly considered a normal part of the aging process due to several reasons. Why? And why are some of us more prone to this process?

• Firstly, the prevalence of osteoarthritis increases with age. As we grow older, the wear and tear on our joints accumulate over time, leading to the degeneration of the cartilage that cushions the joints. This gradual breakdown is a natural consequence of the stresses and strains our bodies experience throughout a lifetime of movement. Put simply, the thinning and wearing of the cartilage is a sign of a well used joint, and not much else. (Like my big toe joint from flexing to it get to the ground to correct my Pilates students!)

• Secondly, the molecular and cellular mechanisms involved in osteoarthritis development align with the aging process. The ability of cartilage to repair itself diminishes with age, as the production of new cartilage cells slows down, and the existing cells become less efficient at maintaining the structural integrity of the joint.

• Other factors such as genetics, obesity, joint injuries, and certain occupations can contribute to the development of osteoarthritis. These factors tend to accumulate over time, making the likelihood of osteoarthritis higher as individuals age.

If osteoarthritis is a normal part of aging, why are we all affected differently?

While osteoarthritis is considered a normal part of aging, it does not mean that everyone will experience it or that its impact cannot be managed. It comes down to our lifestyles and our genes. Lifestyle modifications, exercise, weight management, and appropriate medical interventions can help alleviate symptoms and slow down the progression of the disease.

Growth bone cells to the rescue.

Isn’t it crazy to think that your bones are constantly changing? Always in a state of flux. It is the battle of good vs evil, with the osteoblasts  battling against the osteoclasts.   

High-impact exercise, such as running and jumping, increases osteoblastic bone cell activity due to the mechanical strain and loading placed on the bones. When bones are subjected to high-impact activities, the mechanical forces stimulate osteoblasts, which are responsible for bone formation and mineralization.

The strain and loading experienced during high-impact exercise create micro-damage in the bones. In response, osteoblasts become activated to initiate the repair process. These cells start depositing new bone tissue at the sites of damage, reinforcing the bone and making it stronger. Furthermore, high-impact exercise triggers the release of growth factors and hormones, such as insulin-like growth factor (IGF-1) and estrogen, which also enhance osteoblastic activity. These factors promote the proliferation and differentiation of osteoblasts, accelerating bone formation.

Consistent high-impact exercise over time leads to a cumulative effect on bone remodeling. The increased osteoblastic activity results in a higher rate of bone turnover, leading to the replacement of old or damaged bone with new, stronger bone tissue.The increased osteoblastic activity stimulated by high-impact exercise helps to maintain bone density, prevent osteoporosis, and reduce the risk of fractures, particularly in postmenopausal women and older adults.

Make it simple.

Here are 3 easy ways to get your osteoblasts raring into action:

• Pogo jumping up and down on the spot. Try this for 1 minute each day. Too easy? Try pogo hopping instead.

• Step ups, with a deliberate stomping action. Step downs with a stomp can pack a punch too. Try this for 1 minute each day on the bottom step of any set of stairs. Use the rail if your balance needs a little support.

• Wearing a weighted backpack for the above exercises will increase the impact and bone response even more. Pop a couple of hand weights or plates in a strong backpack, secured firmly on your back. Your osteoblasts will rise to the occasion!

So, in the war of osteoblasts vs osteoclasts in strong and healthy bones, we really need to get our little bone making cells stimulated. It is up to us to make that happen and to prevent aging conditions such as osteoperosis.

Tendonitis and tendinopathy are a common complaint seen within the physio clinic. Tendons can get all angry with you if you load them up too fast or too soon ( think training for only 2 weeks before the City to Surf and then hitting that race day a little under prepared), if you do not allow enough rest between exercise, or even if your postures are not ideal and joint alignments not too flash. Age, and for women, menopause, can all be factors that cause our tendons to become inflamed.    

But don’t despair, that Achilles tendon, rotator cuff shoulder tendon, tennis elbow tendon or knee cap tendon can all adapt back to being strong, not inflamed and ready for the work you wish to put though them. This is called tissue adaptation, and it is what keeps our bodies sometimes breaking down, but then allowing for healing too.  

The vicious cycle

“Why, in the first place did my tendon go all silly on me?”

“OK, if I rest from that triggering activity, will it get better?”

“Sure, but if it is only rest you do and you go back to the same triggering activity, what do you think may happen?”

“Hmm, I see a cycle developing here.”

Tissues, like your tendons, need to withstand the pulling and tensile forces you put though them. If they are overwhelmed and cannot, then trouble starts a-brewing. To improve their ability to withstand these forces, you must stimulate them to become stronger, to thicken, to be able to absorb the forces. We want and need them to adapt, and to do this, you must challenge them. And yes, this means exercise, and even when they are still inflamed and you are ‘resting’ from the triggering activity.

The right kind of tissue adaptation

So, what is the right exercise to do when your tendon needs strengthening but is also going through a rough patch of inflammation? Tendon loading! Your amazing physiotherapist should know all about this and would be there to set you up on a targeted program just for you and your unhappy tendon. However, here are the basics:

• When you exercise a muscle, you also exercise it’s tendon. By targeting the muscle very specifically, mindfully and with a few little rules, you can achieve a stronger tendon while you are resting from your sport and any chance of ongoing inflammation.

• Exercising an inflamed tendon, may make it hurt a little, but this is often what we are after. What?? A little pain at the time, with no lingering issues or inability to go about your usual daily activities is perfectly acceptable. We use the pain scale out of 10 for this one, and would recommend that pain levels with your tendon loading exercises of up to 3/10 is OK. Anything more, or if it’s stirred up for days after, then, yep, the tendon is not happy with its little workout. It often takes a little adjusting of your exercises to get it right.

• Exercise to fatigue. When you are isolating a muscle like you do with these tendon exercises, we want you to achieve that burn, quiver, or “I just can’t do another rep” feeling in the muscle. Playing around with the weight or load you have for your contractions help you to reach this point without having to do 200 reps!

• Slow controlled movements work best. Really demanding a long ‘time under tension’ of your tendon will yield great results, especially in the eccentric or lowering phases of your movement with gravity.

• Offer a progressive strengthening program, increasing the weights as weeks tick by and fatigue is harder to reach. Do keep in mind the 3/10 pain levels here. You do not want to go backwards. However, on a positive note, healing will take 6-8 weeks, and inflammation levels will be decreasing if you are dong everything right.

• Offer a graduated return to sport and that triggering activity. Have you tried some sport specific activity that tests the tendon, but not as a full blown 2 hours tennis match with your tennis nemesis? Go for a hit up against the wall for 10 minutes, softer shots, not as long a time to stress your tendon. How did it go? How was the tendon soreness after? All good? Increase your time at the wall. Same goes for a return to running with an Achilles, patella or hamstring tendinopathy. Jog/walk programs are the best at gradually loading up that tendon that got angry with all your running prior.  

So, don’t let a tendon injury beat you down. There is plenty you can be doing to make it a better and stronger tissue. I bet that this ‘new’ tendon of yours may be even better than the one you had before the injury.

The hip withstands tremendous forces over our lifetime. Walking, running, standing and stairs really put huge forces through this joint. This can be in the order of up to 800% of our body weight for activities such as running and jumping. Astounding!

Arthritis and pain in the hip is a common complaint as we age, and when considering these forces, there is no wonder why. Erosion and thinning of the joint cartilage, the formation of osteoarthritic bone spurs, and lack of joint lubrication are all a natural response of any joint in our body to these loads. But, we can delay this ageing effect with a few strategies.

• Building muscular support. This is a huge one! Just think, if you have a string set of muscles surrounding the hip, they buffer some of these loads through absorption of the daily forces we are putting through our hip. Strong glutes, quads and core will all support your hip better.

• Good pelvic posture and stability. The hip lives in the pelvis, so an improved strength around here and your trunk generally will help with better hip alignment. Think of your level and controlled pelvic foundation with all you do, and build deep abdominal strength to be able to hold it there!   

• Stack you hips over your ankles. This very simple (but constant, if able) mindfulness on your posture will allow the hips to withstand forces when you are upright. Did you know that the hip joint has thicker bone at the top of the joint socket? This is to sustain these exact daily loads. Standing with your hips pushed forward as we see in a ‘sway backed’ posture misses this thicker bone, placing more force through the thinner bone at the front of your joint. This can wear out your cartilage here quicker, risking the early onset of hip arthritis.

So, stand in front of a mirror and practice placing your hips directly above outer ankle bones, just like the picture above. It is not rocket science, but for some of us, may feel very odd indeed. Like anything, the more your practice, the more you will be become aware of your pelvis, hip and leg. Habits die hard, but you will begin to notice your ‘bad’ hip postures more often, and know how to ‘make good.’ After all, avoiding hip pain and a hip replacement down the track are a great incentive to make little changes like these.  

Image by Freepik

The pubic symphysis joint is a specialized joint located in the pelvis, specifically between the left and right pubic bones. It connects the 2 halves of the pelvis.  The joint is composed of fibrocartilage, which provides strength and stability while allowing slight movement.

The pubic bone itself is a thick, flat bone that forms the lower part of the front of the pelvis. It serves as an attachment site for various muscles, including the adductor (groin) muscles of the inner thigh, the abdominal muscles and the pelvic floor muscles. (You could think of the pubic symphysis and the coccyx as the 2 fixed ends of your pelvoc floor ‘hammock’. Together, the pubic symphysis joint, along with the surrounding pelvic floor muscles, play a crucial role in maintaining pelvic stability and supporting the pelvic organs. During activities such as walking, running, and standing, these structures work together to provide strength and control to the pelvis.

💪The hip needs to withstand massive forces inside the joint in our everyday tasks.

Here are some examples of the size of these. Muscles of our hip, especially the abductors, need to offer huge amounts of tension and power to withstand these loads. The abductors are a part of our larger gluteal muscles. No wonder it’s all about squats and glutes strength at the gym!

😮 Walking: 160-330% of our body weight passes through the hip joint.

😮 Stair ascending: 251% of our body weight passes through the hip joint.

😮 Stair descending: 108% to 260% of our body weight passes through the hip joint.

😮 Standing stationary: 32% of our body weight passes through the hip joint.

😮 Single leg stance in walking : 230 to 290% of our body weight passes through the hip joint.

😮 Single leg stance in running: 600-800% of our body weight passes through the hip joint.

Furthermore, the way we stack our body above our hip has a huge role to play in keeping our hips healthy and loading safely. Aiming for a strong and stable pelvic foundation is critical and being always aware of the way we hold our hips over our ankles will give the mighty hip a better chance!

No wonder hip pain, hip arthritis, gluteal tendon issues and ITB issues are so common. Imagine the impact also of carrying too much weight on these loads without the strong musculature to support it all! Better get back to the gym!

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