Hi Doc! Thanks For Helping. 3 Days Ago, I Fell

Hi Doc! Thanks for helping.
3 days ago, I fell on my knees and hand while catching my toe, which my mother always does too, on a very low landing. After 20 minutes of ice and self wound care I went to the hospital's Urgent care and they xrayed my hand and (by my surprise, because I went in for my hand) both knees.
I was wondering why they would x-ray my knees even though I did fall on them and they did had scrapes and bruises.And why the diagnosis on the papers for my wrist was contusion but there was no open wound at all and no bruises but I can't move my hand side to side to the right side. (It is my right hand.)