Hi, thanks for the query to H.C.M.C.
Presuming that type 1 is under control.
Possibly may be muscular pain
Since there is pain in the sin of tibia hence in this case we have to examine few facts as you are a patient of type 1 and very young.
So please get your blood check for calcium, sugar, lipids
profile and of course C B C.
Be sure that all things be in normal condition.
If any abnormality take tt accordingly .
Here I want to make one thing clear that diabetic neuropathy
( peripheral neuritis
) is very common in diabetics so be aware about this .
Take tt of diabetes
Good luck .