Table 2.

Anatomical landmark definitions, types (Bookstein, 1991) and their provenance. Each article describes the landmark, using it as the terminus of a linear measure or directly for GM analysis

Number	Type	Description	Provenance
1	Type II	Most proximal point under the ulnar palmar epicondyle (anterior eminence)	Yeh & Wolf (1977), Fernández et al. (2015), Rein (2018)
2	Type III	The point of maximum curvature on the inter‐epicondylar ridge between points 1 and 3	Drapeau (2015), Fernández et al. (2015), Rein (2018)
3	Type II	Most proximal point under the radial palmar epicondyle (anterior eminence)	Yeh & Wolf (1977), Fernández et al. (2015), Rein (2018)
4	Type III	Point of maximum curvature on the radial ridge separating the articular surface from the radial lateral sulcus	Yeh & Wolf (1977), Fernández et al. (2015), Rein (2018)
5	Type II	Most radially projecting point under the ulnar dorsal tubercle	Yeh & Wolf (1977), Susman (1979), Inouye (1992), Fernández et al. (2015), Rein (2018)
6	Type III	Mid‐point between the posterior tubercles on the intertubercular ridge, underlying the dorsal ridge if present.	Yeh & Wolf (1977), Fernández et al. (2015)
7	Type II	Most ulnarly projecting point under the ulnar dorsal tubercle	Yeh & Wolf (1977), Susman (1979), Inouye (1992), Fernández et al. (2015), Rein (2018)
8	Type III	Point of maximum curvature on the ulnar ridge separating the articular surface from the ulnar lateral sulcus	Yeh & Wolf (1977), Fernández et al. (2015), Rein (2018)
9	Type II	Most distally projecting point on the subchondral surface	Fernández et al. (2015); Susman (1979), Inouye (1992), Rein (2018)