Table 5. 123 classification description of CT-based distal radius fractures.
From: Establishment and preliminary evaluation of CT-based classification for distal radius fracture
Type | Range | 123 Type | Characteristic | Injury mechanism | Surgical approach | Fixed form | Â |
|---|---|---|---|---|---|---|---|
Single-part fracture 1 | D | 1-D | Fracture of the dorsal facet of the cranial fossa or combined with the dorsal facet of the navicular fossa. The articular surface and dorsal cortex cause syntripsis and subluxation or dislocation of the wrist | Dorsiflexion | Dorsal | Dorsal plate | Â |
| Â | V | 1-V | Shear fractures of the volar articular surface of the cranial fossa, most of which are intact. subluxation or dislocation of the wrist is prone to cause | Palmar flexion | Palmar | Buttress plate | Â |
|  | R | 1-R | Radial styloid process shifts distally and ulnaris by avulsion violence; radial + stylus process shifts proximally and rotationally by bending + compression violence | Tear off or bend + compress | Radial | Radial styloid plate and screw |  |
Two-part fracture 2 | D + V | 2-DV | The lunar bone hits the lunar fossa, and the lunare articular surface is separated, and the fracture line passes through the sigmoid notch. Reconstruction of the sigmoid notch and check of TFCC stability are needed during the operation | Axial direction | Palmar | Palmar plate |  |
|  | D + R | 2-DR | Radial styloid process + dorsal articular surface of scaphoid fossa or (and) dorsal articular surface of lunare fossa | Dorsiflexion + radial deviation | Palmar or dorsal part | Palmar plate or dorsal plate + radial plate |  |
|  | V + R | 2-VR | Radial styloid process + fracture of the volar articular surface of the lunar fossa | Palmar + the axial violence | Palmar | Palmar plate |  |
Type | Range | 123 Type | Characteristic | Injury mechanism | Surgical approach | Fixed form | |
|---|---|---|---|---|---|---|---|
Three-part fracture 3 | D + V + R | 0 | 3–0 | Three-part division, complete sigmoid notch | The bending viokenve | Palmar | Palmar plate |
|  |  | 1 | 3–1 | The three parts are split with the backbone cortex, which can be accompanied by a bone loss to varying degrees, and the radial sigmoid fracture line is 1 | Axial violence predominates | Palmar, dorsal is united when it is necessary | Palmar plate + dorsal plate |
|  |  |  ≥ 2 | 3–2 | The three parts are split with the backbone cortex, which may be accompanied by a bone loss to varying degrees, involving two or more sigmoid fracture lines of the radius | Axial violence predominates | Palmar, dorsal is united when it is necessary | Palmar plate + dorsal plate, bone graft when it is necessary |
