David.....repeating Brant's sorry and I've also fallen a couple of times, but w/out the damage you have just experienced. Brant's estimate on Canon is my experience also.

Suggestion for the future of your safety and your equipments; look into Kahtoola micro-spikes (what I have), Yaks, etc. I don't go anywhere in this wx w/out them; e.g well troddened sidewalks, Deer Island, Ipswich Audubon, etc.

Good luck
Bil