Dorsal approach for isolated volar fracture-dislocation of the base of the second metacarpal: A case report

Figure 1 Initial imaging examinations. A: The initial anteroposterior radiograph shows a displaced fracture fragment between the bases of the second and third metacarpals; B: The initial lateral radiograph shows the fragment lying over the volar aspect of the carpometacarpal joint; C: Coronal view of the initial reformatted multiplanar computed tomography image shows that approximately one-third of the carpometacarpal joint surface of the second metacarpal is damaged; D: Horizontal view of the initial computed tomography image shows small avulsion fragments on the dorsal aspect of the second to fourth metacarpal bases (orange arrows).

Figure 2  Intraoperative macroscopic photo shows that the dorsal ligament of the third carpometacarpal joint (gray arrow) and the interosseous ligament between the third and fourth metacarpals are torn (white arrow).

Figure 3 Postoperative radiographs. A: Anteroposterior postoperative radiograph shows that the fragment is reduced to its anatomical position and stabilized using Kirschner wires; B: Oblique postoperative radiograph shows that the fragment is reduced to its anatomical position and stabilized using Kirschner wires; C: Anteroposterior radiograph at postoperative 12 wk shows union of the second metacarpal fragments.