440
Therefore , to avoid stress shielding at the bone-implant interface , the equivalent Young 's modulus and yield stress have to be adjusted when using these bulk materials .
 machanical property: stress shielding; engineering feature: bone-implant interface; machanical property: yield stress; material: be; concept or principle: materials
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:
 machanical property: stress shielding; engineering feature: bone-implant interface; machanical property: yield stress; material: be; concept or principle: materials