522
While it is impossible , and perhaps unnecessary , to recreate all details of natural bone in the porous metallic implant , ideally the implant should have similar hierarchical configurations on multiple scales .
 biomedical: bone; application: porous metallic implant; application: implant
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 biomedical: bone; application: porous metallic implant; application: implant