Bones from land oddly captured by Emirates (5)
I believe the answer is:
ulnae
'bones' is the definition.
(ulna is a kind of bone)
'land oddly captured by emirates' is the wordplay.
'oddly' means one should take alternating letters (letters in odd-numbered positions).
'captured by' indicates putting letters inside.
'emirates' becomes 'UAE' (United Arab Emirates).
The alternate letters of 'land' are 'ln'.
'ln' going inside 'uae' is 'ULNAE'.
'from' acts as a link.
(Other definitions for ulnae that I've seen before include "Thin bones in upper arms" , "Army parts" , "parts of limb" .)