The answer of Umar ibn Al-Khattab to a similar question was: can you buy cyborg implants? No? Come back when you can, and I will gather the people who attended Badr to figure out your fatwa.
As Allah says in Juz 'Amma, "la qad khalaqnaa al-insaana fiy ahsani at-taqweem," meaning "We created humans in the best form. No cyborg body parts. No infra-red seeing eyes. No wings. No four arms. But, through his wisdom, subhannahu wa ta'ala, our creator, optimized and picked the best design for us.
Imam Ash-Shafi'ee (I believe) was once approached by a man who said, "I told my wife I would divorce her if she is not more beautiful than the moon." Moron. So is she? What did he say? He used the ayah above to prove that the man was not divorced.
Ask anybody with leg implants, knee replacements, hip replacements, etc. -- it's extra pain and misery for the rest of your life, and it only serves as a shadow of the biological equivalent. Cyborgism may have advantages (skin won't burn -- no skin), but overall, it is NOT the best creation.
There is also an ayah that severely rebukes people who "change the creation of Allah," so check yourself before you mess yourself.
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