Fig. 4From: Reproducibility and repeatability of a semi-automated pipeline to quantify trapeziometacarpal joint angles using dynamic computed tomographyVisual representation of the anatomical landmarks (AL) used to define segment coordinate systems (SCS) on the first metacarpal (MC1) and trapezium (TRP) bones. A The three ALs required for the MC1 SCS, and B the four ALs required for the TRP SCS. Definitions of the SCS axes for each bone are provided below each figure. Similar figures were provided in the AL instruction document provided to each raterBack to article page