Question

Why can our elbow not move backwards?

Answer 1

Here is your answer....
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Our elbow can't move backwards because the elbow has a hinge joint that allows movement in only one direction.

Answer 2

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♻Һ૯Ր૯ ɿς ע૦υՐ คՈςω૯Ր♻
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ᴡᴇ ᴄᴀɴɴᴏᴛ ᴍᴏᴠᴇ ᴏᴜʀ ᴇʟʙᴏᴡ ʙᴀᴄᴋᴡᴀʀᴅs ʙᴇᴄᴀᴜsᴇ ᴛʜᴇ ʜɪɴɢᴇ ᴊᴏɪɴᴛ ᴡʜɪᴄʜ ɪs ᴘʀᴇsᴇɴᴛ ɪɴ ᴏᴜʀ ᴇʟʙᴏᴡ, ᴀʟʟᴏᴡs ᴍᴏᴠᴇᴍᴇɴᴛ ɪɴ ᴏɴʟʏ ᴏɴᴇ ᴀɴɢᴜʟᴀʀ ᴘʟᴀɴᴇ.