Fig. 2. Compression and tension specimen locations in the equine MC3. (A) Locations of the six compression cube specimens: dorsal-lateral (D-L, N=2), Lateral (L, N=1), palmar-medial (P-M, N=2), and dorsal-medial (D-M, N=1). Black regions denote habitual tension. White regions denote habitual compression. The lateral cortex may receive predominant tension at higher gait speeds due to shifting of the neutral axis (NA to NA', hatched region). (B) Locations of the four tension dumbbell specimens: dorsal-lateral (D-L, N=2) and palmar-medial (P-M, N=2). [This adaptation of the original NA (Gross et al., 1992) has already been used (Skedros et al., 2003a) in a study examining `regional' safety factors.]