I would like to know either the answers to these questions OR where I
can find material that could assist in answering these questions.
Thank You.

I. What are the most common fractures related to the DISTAL femur?
II. How are these fractures treated?

I ran across a page with some interesting data on long bone fractures.  

http://guide.stanford.edu/2ndVA/omara.pdf

Reguarding treatment, of course you should always seek the advice of a
medical professional, hopefully a Doctor, but I also came across
another page which might give you a little more info.

http://www.emedicine.com/sports/topic38.htm

"...Treatment of femoral shaft fractures has undergone significant
evolution over the past century. Until the recent past, the definitive
method for treating femoral shaft fractures was traction or
splinting...
...The femur is very vascular, and fractures may result in blood loss
of 2-3 units, with 40% of isolated fractures requiring 2.5 units of
blood for transfusion...
...Frequency: In the US: 
The incidence is reported as 1-1.33 fractures per 10,000 population
per year (1 case per 10,000 population).
In individuals younger than 25 years and older than 65 years, the rate
is 3 fractures per 10,000 population annually.
These injuries are most common in males younger than 30 years. Causes
may include automobile, motorcycle, or recreational vehicle accidents
or gunshot wounds.
The average number of days lost from work or school is 30. 
The average number of days of restricted activity is 107. 
Incidence increases in elderly patients. 
The rate of stress fractures in athletes is 2.8%..." 

I'm sure someone will have a much better answer for you, but perhaps
this will help as well.
Trea