I had similar situation 6 years ago, I fell from 2nd floor in US. (age 60 years that time). I was unconscious for 2 days. 3rd day I gained consciouness. My lumber region (lower portion of vertebrae) was badly hit and legs (swollend like elephant legs and bottoms affected - pain from lumber region to toes) Normally at that age, people get paralysis.

I took following after my discharge from hospital (5th day

1) Arnica 200 dil (1 dram) (Internal)

3-4 drops in water (2 table spoon of water). Just shake. Taking sip by sip

(avoiding coffee and alcohol).

Repeated after 3 days.

Repeated after 3 days.

Therafter no need.

2) Ferrum phos 6 x tables (Tissue salt)

   10 tabs in glass. Pour boiling water - make glass full.

   Stir, taking sip by sip each time stirring.

   Repeated in the afternoon.

   Continued for 10 days.

Beside, I started Ice therapy. Within a month I started walking with difficulty.

Legs swelling reduced considerably.

I continued Ferrum Phos and Ice therapy for 6 month. 8th month onwards Swelling gone. I started driving car but difficulty in walking.

Then I continued Ferrum Phos, Mag Phos and Kali phos (all 6 x potency)
Continued Ice theraphy monring and evening for six month more.

I am today fit to climb hills, swimming, driving.

You may read about above tissue salts and Arnica on site.