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v ) The long-term in vivo material/biological performance of porous metallic implants that are designed through topology optimization techniques and produced by AM needs to be rigorously assessed in order to ascertain the advantages and drawbacks of such implants .
 material: v; concept or principle: performance; application: porous metallic implants; engineering feature: designed; engineering feature: topology optimization; manufacturing process: AM; material: be; application: implants
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:
 material: v; concept or principle: performance; application: porous metallic implants; engineering feature: designed; engineering feature: topology optimization; manufacturing process: AM; material: be; application: implants