From:  Mixed Reality spatial computing for preoperative surgical planning in orthopedic oncology: review of 72 cases and evolution of clinical implementation

 Results of Likert Scale questionnaire scores and NASA-TLX scores in conventional 2D and Mixed Reality (MR) 3D hologram groups.

DomainConventional 2D group, median (IQR)MR 3D hologram group, median (IQR)
July 2021–November 2024December 2024–November 2025Overall*MR version 1
(July 2021–November 2024)
#MR version 2
(December 2024–November 2025)
Overall
Likert Scale questionnaire scores
Spatial visualization 1 (0)1 (0)1 (0)5 (0)5 (0)5 (0)
Spatial orientation1 (0.3)2 (1)1 (1)5 (0)5 (1)5 (0)
Depth perception1 (0)1 (0)1 (0)5 (1)5 (0)5 (0)
Location and identification of pathology1.5 (1)1 (0)1 (1)5 (1)5 (0)5 (0)
Surgical incision1 (1)1 (0.3)1 (1)5 (0)5 (0)5 (0)
Effectiveness of preoperative tools1 (1)1 (0)1 (1)4 (1)5 (0)5 (1)
NASA-TLX scores
Mental80 (12.5)80 (12.5)80 (12.5)10 (10)10 (0)10 (10)
Physical25 (10)30 (10)30 (20)40 (10)15 (10)30 (22.5)
Temporal20 (0)20 (0)20 (0)20 (0)20 (0)20 (0)
Performance20 (20)10 (10)20 (10)90 (10)90 (10)90 (10)
Effort75 (12.5)80 (12.5)80 (10)20 (10)10 (0)10 (10)
Frustration80 (10)80 (20)80 (20)10 (10)10 (0)10 (0)

*: Mixed Reality platform (version 1) was used between July 2021 and November 2024, while the upgraded #: Mixed Reality platform (version 2) was used between December 2024 and November 2025.