Dimensional accuracy and precision and surgeon perception of additively manufactured bone models: effect of manufacturing technology and part orientation

Table 2 Questionnaire using 5-point Likert scale to assess surgeons’ perception after performing a simulated surgery on each of the additively-manufactured 3D femur models

Question No.	Question	Location
Anatomical performance
1	The 3D model feels like a real bone to touch.	n/a
2	The 3D model resembles bone in colour.	n/a
3	The metastatic lesion is realistically represented in the 3D model compared to the radiological images.	n/a
Functional performance
4a 4b	The tactile perception and resistance during the drilling of the 3D model resemble that of bone.	diaphysis
4a 4b		metaphysis
5a 5b	The transition from cortical bone to medullary cavity is observed during drilling.	diaphysis
5a 5b		metaphysis
6a 6b	The tactile perception and resistance during screw placement resembles that of bone.	diaphysis
6a 6b		metaphysis
7a 7b	The tactile perception and resistance during screw removal resemble that of real bone.	diaphysis
7a 7b		metaphysis
8a 8b	The tactile perception and resistance during plate placement resemble that of bone.	diaphysis
8a 8b		metaphysis
9	The tactile perception and resistance during osteotomy resemble that of bone.	diaphysis
Overall clinical value
10	Such 3D models would be useful for preoperative planning and implant selection.	n/a

ISSN: 2365-6271