and pain on walking is called claudication. it can be due to neuropathy or due to peripheral vascular disease
it may be related to your trauma. however it needs to be confirmed by clinical tests.
i would advise you to consult your physician in this regard and get a good clinical examination done before coming to a diagnosis.
this will help to start you on a right treatment.
i hope i have answered your query.
take care and have a speedy recovery