Base Of The Toe's Middle Phalanx, Superior View

Description

Middle phalanx base of a lesser toe is centered in a superior (dorsal) view, emphasizing the proximal articular surface that meets the head of the proximal phalanx at the proximal interphalangeal (PIP) joint. The concave facet occupies the proximal end, with its dorsal lip and marginal ridges defining the joint contour, while the shaft extends distally within the same frame. Medial and lateral margins suggest the attachment zones for the collateral ligaments and capsular reflections bordering the articular cartilage. Bone detail is the focus. PIP joint congruity in the toes often determines whether a painful hammertoe remains flexible or becomes rigid, and pathology commonly concentrates at this proximal articular margin in capsulitis, dorsal impingement, and post-traumatic arthritis after intra-articular fracture. A superior perspective makes the dorsal contour easy to read against the proximal articular facet, which helps when teaching how extensor digitorum longus and brevis tension can accentuate dorsal subluxation while the plantar plate and flexor apparatus stabilize the plantar side, structures that are not visible but clinically inseparable from this bony geometry. Small surfaces matter here. Use this illustration in gross anatomy teaching on the foot skeleton, in podiatry and orthopedic lecture decks covering PIP joint instability and hammertoe correction, or in publishing figures that accompany radiographs and CT descriptions of middle phalanx base fractures and degenerative change. Anatomical accuracy verified by SciePro's Medical Advisory Board.