I’ve been up early and looking at research (such a party animal!)
Looking into the effect of hoof growth in horses…. Interestingly during an 8 week period of hoof growth, it has been found that there is a 3.5* change in the dorsal hoof wall angle.
This may not sound like much but in fact this increases ground reaction force around the distal interphalangeal joint, which increases the strain on the deep digital flexor tendon and in turn increases the stress exerted by this ten
don on the navicular bone.
Perhaps a reason not to leave horses too late to be shod / trimmed!
(Research from Van Heel et al. 2005 and Moleman et al. 2006)