A bit I broke in my leg (5)

I believe the answer is:

tibia

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'my leg' is the definition.
I can't tell whether this definition defines the answer.

'a bit i broke' is the wordplay.
'broke' indicates an anagram.
'a'+'bit'+'i'='abiti'
'abiti' with letters rearranged gives 'TIBIA'.

'in' acts as a link.

Can you help me to learn more?

(Other definitions for tibia that I've seen before include "The formal shinbone" , "ancient pipe" , "The large shinbone" , "Part of leg of" , "Bone of the lower leg" .)

I've seen this clue in The Globe and Mail.

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