Hi..
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns..
As per your complain it seems that due to falling there has been traumatic
injury to the soft tissues and bruising that is causing purple discolouration is due to rupture of blood vessels and accumulation of blood in the soft tissues..
In case if you are able to put weight on the leg and walk then there dos not seems to be any bony injury..
But in order to confirm it you should consult an Orthopedician and get evaluated and an x ray can help in diagnosis..
In case of bony
fracture reduction and immobilization of bony segments with cast or
splint can be done..
In case if there is no bony fracture then do cool compresses over the area..
You can take anti inflammatory painkiller like
Ibuprofen..
Apply
Heparin gel as it will help in resolving the lump soon..
Elevate your leg while lying down and also limit exertion..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.