ACL Tear Linked to Running Shoes With Thick Tread


I’m going to be talking to you about some alarming research that I came across in the scientific literature about the potential dangers of running and running shoes with very thick protruding tread. Overall, ever since the barefoot / minimalist running movement there’s been an important shift in how we think about our footwear and how footwear influences foot strength but health as well as running biomechanics and most often in efforts to make real gains and lasting progress in terms of acquiring feet that are more optimized in terms of health and functionality it’s widely practical to run in a shoe with less arch support, the stability features and of course less external reinforcements that completely immobilizes the foot this is why most of us would most likely benefit from long term use of barefoot-feeling footwear that doesn’t inhibit the activity of the foot. In that spirit it may also be essential to choose a shoe with an outsole that best reflects the sole of the bare underfoot and you may want to reduce your dependence on running in shoes with overly sticky grippy out- soles that causes your foot to snag or stick to the ground as well and you also may want to avoid running and shoes with very thick protruding tread and here’s why running shoes with protruding teeth like tread may be a dominant threat to the ACL which is the anterior cruciate ligament and according to the Mayo Clinic the ACL is one of the key ligaments stabilizing the knee joint it joins your thigh bone to your shin bone it’s the most common ligament that often gets torn in high agility sports so sports that usually involve abrupt rapid sudden stops or deceleration or quick changes in direction, but when it comes to running shoes with protruding tread a high degree of traction may actually impose greater tractional forces that are very damaging to the ACL during running and the evidence is rising to the level that gives us high confidence that running shoes with enormous traction may be very health harming and detrimental to the knee joints ligaments whereby a 2010 study published in the American Journal of Sports and Medicine discovered that running in running shoes with thick aggressive tread and traction may amount to the production and the accumulation of two types of harmful tractional forces that attack the knee joint during running in running in shoes with thickly, sticky, overly grippy traction and that excessive traction produces impact forces and joint loading that influences knee ligament tearing and possibly knee ligament rupture in runners who wear running shoes with abundant amounts of traction. I’ll link the study below in the description box but I’m just going to give a very brief overview as to what the researchers determined based on their findings. The study analyzed two types of tractional forces. The first form of traction quantified in the study was linear translational traction and the second traction force was rotational traction both forms of traction forces are strongly implicated in causing ACL ruptures. The researchers found that subjects who ran in running shoes with the most amount of traction had overall higher ankle joint and knee joint loading meaning there was a lot of torque and compressive impact at the ankles and knees whereby loading is most often a precursor to injuries because high joint loading during running especially when running long distances often translates into overloading and may produce heavy pressure and strain on the ligament structures within the joint resulting in cumulative wear and tear that may actually accelerate ligament and cartilage degeneration or breakdown or erosion also leading to pain, swelling and stiffness and of course injury, but the bad news about bulky running shoes with excessive traction and tread doesn’t stop there! The researchers found that the increased moments at the ankle and knee joints in runners who wore running shoes with a high degree of traction was due to the increase of the two traction force types: linear translational traction and rotational traction, both forms of traction are proven to be risk factors for ACL injury, but what is most concerning is that the researchers found that these two types of tractional forces occured at such an intensity that resulted in increased loading rates that occurred within the rupture zone for knee ligaments which means that there may be a slight risk of a knee ligament rupture if you run in running shoes with aggressive tread and traction. These findings suggest that your knees could be at their most vulnerable if you run in shoes that have thick tread and rippy sticky traction where the tread juts out substantially, although these shoes may be optimized for providing slip guard for icy and wet conditions or slippery trails these shoes may also feed your knees with damaging impact pulses and impact stress that could potentially be avoided if you run in shoes with a smoother tread-less, if you will, outsole but in this case how can your slip guard be made better if you run in running shoes without any traction or a sticky grip? You have to remember that certain forms of running also necessitates good balance control and certain running styles have the mechanical capacity to provide natural traction even in the most slippery conditions. The best example to date, in my opinion, is of dr. Romanov founder of Pose Running he made the impressive case that if you avoid landing heel first when you run, that is, if you don’t land with a heel strike landing pattern when you run, if you avoid hyperextending or completely unbending your knee joints before the foot strikes the ground when you run, but rather if you land towards the front part of your foot making sure that both of your knees are softly bent at all times and you shift your body weight more forward, may align your biomechanics in a more strategic way that may enhance balance control, helping you resist falling when running over icy surfaces. I posted a link to the video showing dr. Romanov running on ice while displaying the essential elements at the mechanical level that helps create a more steady, sturdy, stable mechanical climate. Ultimately Dr. Romanov does provide a comforting assumption that by deploying your mechanics in the right way, may provide enough quality traction potentially equivalent to running shoes with bulging tread and clutchy traction. So, if you are a runner who has long struggled with knee joint pain and knee injuries, you may be able to improve upon your sore knees by not running in running shoes with too much traction and thick tread and also you may want to think about your running form and run with a forefoot strike landing pattern. I also posted a link to one of my videos showing the proper movement patterns of the knee and the ankle and the foot in a proper forefoot strike landing. Hopefully these suggestions may be a very powerful addition to improving your knee pain relief, I hope you enjoyed this video and please subscribe to my youtube channel to stay updated on all the latest research regarding the health and performance benefits of forefoot running as well as minimalist running and barefoot running as well as the health harming attributes of heel strike running. Thank you so much for listening and watching have fun out there on the roads, bye for now

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