Gelding - especially doing so early on - leads to soundness in the legs?

[Calzone Lord]

If so -- all of these real cheaper bred horses who don't look promising early-on should probably be gelded as yearlings.

I'm suprised by how many horses at PID who are age 4 and 5 - and are still ungelded according to the PP's - yet have displayed no lick of ability at any time in their racing career.