Chapter M

Width between head and great trochanter ·019
Width at third trochanter ·034
Diameter of head ·019
Width at condyles ·028
Width of trochlea ·015
Height of great trochanter ·015
Diameter fore-and-aft of shaft at middle ·018

The _tibia_ (Plate IX., Fig. 3) is very long and heavy, with broad proximal articular face, the inner borders of which are prolonged upward and separated by a groove.

The shaft at the tuberosity is subtriangular, with strongly concave sides. The tuberosity is prominent, with a deep pit on its upper surface for the insertion of the ligament of the patella. The shaft below becomes sub-cylindrical, and decreases regularly in size downward. Its curvature is forward. The distal articular face is divided by a smooth ridge into two deep facets. The malleolus is long.

The _fibula_ (Plate IX., Fig. 2) is distinct, straight, and very slender. The distal end is but slightly expanded, and is strongly marked by a vertical groove externally. The proximal end articulates with the overhanging portion of the proximal face of the tibia.

_Measurements of Tibia._

TIBIA.