While I was away a drunk person fell on my almost 20 years old crataegus. The roots were damaged and the leader was snapped. I'm sorry this is a wordy post but my emotions are getting the better of me. I'll appreciate all forms of advice or sources of information.

It was wrenched from the soil so that it was lying completely flat in the pot. Someone lifted it back up and staked it while I was away. The roots appear somewhat intact but I haven't probed too deep.

The leader was snapped and seems approximately 50% girdled. It's a little wobbly but the remaining wood seems strong enough to support itself.

Roughly 50% of the foliage is growing from above the break.

l've tried to provide a 360 degree view of the break.

There is an open fracture with some splinters poking out and a section of cambium which has peeled and died.

I'm asking for advice regarding procedures, materials and timelines needed to give the leader the best chance at repair.…