Yīshēng jìnxíng le yuánwèi shǒushù, bìmiǎn le yízhí de fēngxiǎn.
The doctor performed in-situ surgery, avoiding the risks of transplantation.
Tips
usage
原位 is used both in everyday Chinese (put it back in its place) and as a technical medical/scientific term meaning in situ (in the original or natural position).