Hello JLager,

The 2 events, (numbness and shin splints) could be related, but please, consider always that a "virtual assessment" from internet is often sterile in meaning and all the "diagnosis" you can get from websites need to be taken with a pinch of salt.

Said that, I would suggest you to carry on your R.E.S.T. management which seemed to give you good result and basically solve the problem at the very beginning.

If symtoms relieve, then I do suggest you to gently return to such physical activity, adding sessions of gentle stretching of both posterior and anterior compartment of your legs, bearing in mind that Ski boots are not very helpful for your problem as if unproperly buckled (too tight) they can precipitate your problem.

Another consult with a GP/Senior Physio/Osteopath is suggested as I said above, virtual anamnesis, diagnosis and prognosis could be fallacious

All the best

Emanuele