19/10/2026
I often talk about hypermobility, especially in young horses. Hyper mobility essentially is a body (or part of a body) that is a bit too flexible, a bit too mobile. Hypo mobility would be the opposite - an area with lack of mobility.
A lot of modern sports/performance horses have a degree of hypermobility. Those great kick-away back ends you're looking for in your showjumpers are partly facilitated by mypermobility.
Why does this matter - a hyper mobile horse that's still growing is a VERY weak horse. They may be powerful, fast, or strong in exertion, but given that they're a bit too bendy in places this can mean they're more predisposed to injury. Not only from self-striking - which from the video here you can see how easy that would be in the distal limb) but also from overloading through compensation.
We've all seen the diagram of the horses skeleton that shows when growth plates close, and I'm forever suggesting that clients take their time with their young horses. If your horse cant walk in a straight line with balance and coordination, you shouldn't be asking them to walk in a circle. Especially when you then add a rider and lift the centre of gravity up a bit.
If you've got a hypermobile horse, working them in boots/leg protection can help prevent self strikes but the best thing you can do is strengthen them correctly. It's not the most exciting work but ground work, pole work and proprioceptive work can all help future-proof your horse.
And as ALWAYS - if you notice a change in their behaviour or performance, working with a good body worker can help. The best practitioners use a tool like Equigate where they can leave a clear report that lets you and the other practitioners in your animals team know what they need to know