Boyer diss 2009 1046..

articulation with the entocuneiform. The lateral side has a flat, parasagittally oriented
articular surface, which additionally faces slightly distally. The borders of facets here are
not distinctly delimited. However, this surface would have contacted the distal end of the
medial aspect of the ectocuneiform proximally, and the medial side of MT III distally.
The shaft of MT II shaft becomes progressively mediolaterally wider from its
proximal end to its distal end. The distal end is bowed away from the more lateral digits
and toward MT I. The distal articular surface is similar to those of the metacarpals. It
differs in being larger and in having a smaller dorsoplantar depth for its mediolateral
breadth (a lower HSV). The head is asymmetrical, with a more gradually sloping medial
aspect to the distal profile (as for MC II and III). Although it is fragmentary, enough is
preserved to determine that it would have been longer than any of the metacarpals of set
1, and about the same length as the “set 2” MC III and IV.
Metatarsal III description.—MT III is represented by the complete right side
element and by the proximal half of the left side element. It is quite different from MT II
in that it is longer and more gracile, its proximal end is more asymmetrical, and its distal
end is narrower (Figs. 4.38D, 4.39; Table 4.23). The lateral side of the proximal articular
surface of MT III (for the ectocuneiform) projects farther proximally than the medial
side. The articular surfaces on the medial and lateral aspects of the proximal end of the
bone have nonarticular gaps that separate each side into dorsal and ventral articular
regions. These nonarticular “gaps” appear as notches on the lateral and medial sides of
the bone in proximal view. The medial side of the proximal articular surface has a
dorsally positioned, distal extension onto the medial side of the shaft, representing a point
of articulation with MT II. The medial side of the proximal end also has a ventrally
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