This happens in both flat backed and high withered horses,  but the horse will invariably have a prominent wither.

This usually happens when the horse carries a lot of flesh on its shoulder and is not common in dressage saddles – the further forward cut the saddle is the more this is likely to happen and happens to a greater or lesser extent in many horses where the withers are fairly prominent and the shoulders quite broad and well muscled. Many Eventers and Show Jumpers suffer from this – it is not always seen as the saddle slipping back significantly but the saddle is moved slightly across the back every stride, as the shoulder comes back and this creates soreness up against the spine.

horse_saddle_case_history_Hone__2_w.jpg This saddle has been placed too far forward and is resting on the top of the scapula, which is very much wider than the wither. The saddle looks too narrow with the lowest part of the seat far too far to the rear even though the pommel/cantle relationship would appear acceptable
horse_saddle_case_history_Hone__7_w.jpg When the saddle is put in the correct place and the rider sits in it, see how the balance is lost.  The cantle is now much higher than the pommel and all the rider’s weight is in the front third of the saddle.
Floating_Point.JPG A significant advance in the stability of the saddle is a feature seen in many of the NSC jump and General Purpose saddles. We have created a design where the point of the tree is left on top of the panel “floating” so that the part of the flap where the riders leg sits in a shorter stirrup scenario can move quite easily without moving the rest of the saddle