If something looks too good to be true, it probably is. That definitely holds up when we look at silicon implants as an immediate fix for brachymetatarsia or short toes. Despite what you may have seen another doctor claim in TV ads, toe implants are the worst surgery being advertised for brachymetatarsia. The immediate results might look o.k., but the procedure is very temporary.
In the procedure, the surgeon puts a silicon implant in the joint to try to achieve a cosmetically acceptable result. However, there is no explanation of how the toe joint will function later. The implant could very likely dislodge and destroy the joint sooner or later. Don't risk the functionality of your toes for a quick fix that won't last.