Hello dear,
1. The swelling/ bump formation after injury is due to accumulation of fluid & blood and it is called Hematoma.
The blood cells accumulated are eventually broken down and absorbed in the body.
But this is a slow process & takes times to disappear completely.
Till that time, symptomatic relief is obtained by ice compression, adequate rest &
analgesic preparation like Diclofenac+
Serratiopeptidase.
2. The sensation of numbness can be attributed to compression of nerve or blood vessels due to the Hematoma.
Investigations like Doppler scan of lower limb blood vessels & nerve conduction studies will be helpful.
Symptomatic relief can be obtained by intake of nervigenic agents (like Vitamin B6, Vitamin B 12,
Folic acid) as well as
multivitamin & multimineral supplements including iron, calcium & Vitamin D needs to be added in your diet.
Physiotherapy exercise will also be helpful.
If symptoms still persist, kindly consult an Orthopedician for proper clinical examination.
X ray of the affected leg will be helpful to rule out any fracture or other pathological causes.
Wishing you a Good Health.
Take care.