My granny is getting a knee replacement on Monday. What is used as the replacement is it a bone or do the doctors use

Question: My granny is getting a knee replacement on Monday. What is used as the replacement is it a bone or do the doctors use another substance
- Keywords:
  bone,
  knee replacement
Asked by The exterminare to Eoin, Fiona, Ivor, Karl, Pattie on 1 Mar 2018.
- Eoin McEvoy answered on 1 Mar 2018:
  
  Most often the knee is replaced with metal (like titanium). However, tissue engineering research is always improving so in the future implants may be made from bone grown in a lab.

Question: My granny is getting a knee replacement on Monday. What is used as the replacement is it a bone or do the doctors use another substance