Mediall part of glenoid cavity of middle phalanx

In horses, for several authors like Barone or JM Denoix, the proximal articular surface of the middle phalanx is not described as a simple articular fovea (as listed is in the NAV), but as an articular surface including a medial and a lateral glenoid cavity separated by an intermediar eminence sometimes termed as the sagittal ridge of base of middle phalanx.