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. Author manuscript; available in PMC: 2021 Aug 26.
Published in final edited form as: J Biomech. 2020 Jul 15;109:109951. doi: 10.1016/j.jbiomech.2020.109951

Table 4:

Mesh sensitivity analysis. The bone mesh edge lengths were decreased by 50% (higher resolution model) and increased by 50% (lower resolution model). Coordinate systems determined using the higher and lower resolution models were compared to the original models using System 2 and System 3. The average and standard deviation (SD) of the Euler angles between the original model and new models are provided.

Description System 2 System 3
principal component analysis automatically placed markers on bone surface
Edge Length 50% 150% 50% 150%
Talus deviation
[X, Y, Z] (°)		 Average [−0.5, −0.6, 0.1] [0.1, −0.4, −0.9] [0.3, −0.2, −0.1] [0.3, −3.0, 0.2]
SD [0.8, 1.9, 1.0] [1.3, 1.8, 1.3] [0.7, 1.0, 0.8] [1.1, 6.4, 1.7]
Calcaneus deviation [X, Y, Z] (°) Average [0.6, −1.3, −0.1] [0.3, 0.6, 0.1] [0.1, 0.0, −0.1] [0.4, −0.4, −0.6]
SD [0.5, 2.0, 0.7] [1.0, 4.3, 0.9] [0.4, 0.8, 0.3] [1.1, 3.0, 1.5]