Explanation of the video:
I LIKE THE WAY YOU MOVE. . . THE COMPLEXITY OF MOVEMENT IN THE HORSE
(A partial/superficial explanation of what is going on inside the foot in this video)
How complicated is just the movement of the foot alone!
The foot is like a passive spring mass system.
“The mass is the mass of the limb itself. The force is the downward force of the horse’s body multiplied by the acceleration and gravity” (1)
The alignment and placement of the pastern and hoof is carried out with virtually no assistance with any muscular activity.
The forelimbs support more weight than the hind limbs.
During flexion of the fetlock and the hoof, most of the movement is in the fetlock. The least amount of movement is in the pastern joint; and movement in the coffin joint is in between these two.
During the first half of the stride as the fetlock goes downwards, the suspensory ligament tightens first, followed by the superficial flexor tendon and then the deep digital flexor tendon.
The fetlock rotates on itself faster than the coffin bone (also known as pedal bone) and rotates during the first part of the stride immediately after impact with the ground.
During the second half of the stride, the suspensory ligament shortens first which leads to the coffin bone rotating. This is followed by the superficial flexor tendon shortening, which causes the pastern and fetlock to rotate. The Deep flexor tendon then shortens causing again the fetlock rotation.
The Sesamoid bones are a part of the suspensory apparatus, and they serve to increase the surface area of the fetlock area of the fetlock joint. They also receive the compressive forces exerted by the cannon bone. The presence of the sesamoid bones prevent displacement and any changes in flexor tendon speed.
THE ‘FLICK’ OF THE TOE (Can be seen clearly in this video – especially with the Clydesdale):
The flick of the toe at the end of the stride is caused by the deep flexor tendon’s pull on the coffin bone, when all the load is off that leg.
The reason one can learn from this video is because you can see why you need to think about how to train and ride a horse with care- taking into account how the ligaments and bones function. Keep everything in alignment as much as possible, and let the horse’s body do its job, even with the extra weight it has to carry or pull. Speed, tight turns, jumping, fast stops etc. need to be performed carefully if you are going to have a kinematically sound horse.
The love of tradition in how horses were trained even 10 years ago needs to be updated to align with new medical and scientific knowledge of the functional anatomy of the horse. Old thinking has to be weighted with: “Well how does the horse’s body really function? And how can we incorporate that knowledge in training our horses to stay sound and healthy with a long future” - there is no need for second guessing with the information available. Now - that is common sense horsemanship! One can see straight away with this video alone, that making a horse go at speed around a round pen would definitely upset the kinematics of the leg and hoof. One incorrect stride after another and another and another will lead to compromised tissues, damage and eventually lameness. Imagine the concussive forces on the front limb when the horse is being pulled around in ‘doubling’ or a ‘one rein stop’ even in a walk?
*** Original video published by 'OntrackEquine'Software*** website: http://ontrackequine.com/
Ref: James R Rooney D.V.M – articles, videos, books and (1) On the
This site provides links to random videos hosted at YouTube, with the emphasis on random.
The original idea for this site actually stemmed from another idea to provide a way of benchmarking the popularity of a video against the general population of YouTube videos. There are probably sites that do this by now, but there wasn’t when we started out. Anyway, in order to figure out how popular any one video is, you need a pretty large sample of videos to rank it against. The challenge is that the sample needs to be very random in order to properly rank a video and YouTube doesn’t appear to provide a way to obtain large numbers of random video IDs.
Alternative random YouTube videos generator: YouTuBeRandom
Even if you search on YouTube for a random string, the set of results that will be returned will still be based on popularity, so if you’re using this approach to build up your sample, you’re already in trouble. It turns out there is a multitude of ways in which the YouTube search function makes it very difficult to retrieve truly random results.
So how can we provide truly random links to YouTube videos? It turns out that the YouTube programming interface (API) provides additional functions that allow the discovery of videos which, with the right approach, are much more random. Using a number of tricks, combined some subtle manipulation of the space-time fabric, we have managed to create a process that yields something very close to 100% random links to YouTube videos.
YouTube is an American video-sharing website headquartered in San Bruno, California. YouTube allows users to upload, view, rate, share, add to playlists, report, comment on videos, and subscribe to other users. It offers a wide variety of user-generated and corporate media videos. Available content includes video clips, TV show clips, music videos, short and documentary films, audio recordings, movie trailers, live streams, and other content such as video blogging, short original videos, and educational videos. Most content on YouTube is uploaded by individuals, but media corporations including CBS, the BBC, Vevo, and Hulu offer some of their material via YouTube as part of the YouTube partnership program. Unregistered users can only watch videos on the site, while registered users are permitted to upload an unlimited number of videos and add comments to videos. Videos deemed potentially inappropriate are available only to registered users affirming themselves to be at least 18 years old.
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YouTube has faced criticism over aspects of its operations, including its handling of copyrighted content contained within uploaded videos, its recommendation algorithms perpetuating videos that promote conspiracy theories and falsehoods, hosting videos ostensibly targeting children but containing violent and/or sexually suggestive content involving popular characters, videos of minors attracting pedophilic activities in their comment sections, and fluctuating policies on the types of content that is eligible to be monetized with advertising.