Chip Fractures Involving the Extensor Process of the Third Phalanx



Examples

Radiographically, chip fractures of the extensor process of the third phalanx become significant, as do the other degenerative changes involving the cranial and distal aspect of the second phalanx. Figures 14, 15, 16, 17 and 18 demonstrate separate ossification centers or chip fractures of the extensor process of P3, with varying degrees of articular involvement. In Figure 15, the extent of the calcifications in the area of the extensor process are rather minimal and of little or no radiographic significance. If there was radiographic evidence of other degenerative changes in this area, my opinion would be different. Figure 16 demonstrates significantly more calcification or ossification in this area, in addition to a bone spur forming on the extensor process.
Figure 14. Figure 15.
Lateral radiograph of the foot demonstrating a separate ossification center or old chip fracture of the extensor process of P3, with no radiographic evidence of active degenerative changes. Lateral radiograph of the foot demonstrating separate ossification center(s) or old chip fracture(s) of the extensor process of P3 with a suggestion of some degenerative changes involving the distal aspects of the second phalanx.