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distal end radius fracture ... overview reduction techniques form campbell

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Distal Radius Fracture: Overview and Reduction Techniques (Campbell's Operative Orthopaedics, 15th Ed.)

Overview

Distal radius fractures account for up to 20% of all fractures seen in emergency departments. Management remains debated, but anatomic restoration of the distal radial articular surface is generally the primary goal, since studies link as little as 1 mm of articular incongruity to worse outcomes (though this association isn't universal).
Key radiographic parameters to restore:
  • Palmar (volar) tilt - normally 11 degrees
  • Radial height - normally 12 mm
  • Articular incongruity - less than 1 mm
  • Reduction of the distal radioulnar joint (DRUJ)
Older, low-demand patients tend to tolerate residual incongruity and deformity well, whereas young, high-demand patients are more prone to arthrosis and functional impairment from malunion. Poor bone quality can cause significant displacement/comminution even from low-energy trauma, making reduction harder to obtain and maintain until union.
Classification: More than 20 systems exist (Gartland and Werley, Frykman, Melone, Fernandez, Cooney/Universal, Modified AO), but inter/intraobserver agreement is only moderate at best - Campbell's notes these are conceptual aids rather than precise predictive tools.
Assessment of instability - four factors predict an unstable fracture likely to lose reduction:
  1. Initial dorsal angulation greater than 20 degrees
  2. Dorsal metaphyseal comminution
  3. Intraarticular involvement with an associated ulnar fracture
  4. Patient age over 60 years

Reduction and Treatment Techniques

1. Closed reduction and casting Stable fractures are treated with closed reduction and immobilization - initially a splint, followed by a short arm cast. This is often appropriate for elderly/low-demand patients even when radiographic alignment is imperfect, given their tolerance of mild deformity.
2. Closed Reduction and Percutaneous Pinning (Technique 62.15, Glickel et al.) The core technique described:
  1. Place the thumb and index finger in finger traps for longitudinal traction (typically ~10 lb), then manipulate/reduce the fracture.
  2. Check reduction fluoroscopically - if anatomic, proceed to pinning; if not anatomic or severely comminuted, consider ORIF instead.
  3. Make a 1.5 cm longitudinal incision starting at the radial styloid.
  4. Identify and protect branches of the superficial radial nerve with blunt dissection.
  5. Through the first extensor compartment, place two 1.6 mm (0.062 inch) Kirschner wires from the radial styloid across the fracture into the ulnar cortex proximal to the fracture (dorsal or volar to the compartment depending on fracture pattern).
  6. Place a third K-wire orthogonally (90 degrees to the first two), starting just distal to Lister's tubercle, driven proximally and volarly across the fracture to engage the volar cortex - confirm the starting point fluoroscopically.
  7. For marked dorsal comminution, add a second dorsal or infrafocal pin; for radial comminution with translation, add a buttress pin into the radial fragment driven to the proximal ulnar cortex, or use a crossed-pin configuration.
  8. Add wires as needed for additional fragments, then bend/cut wires superficial to skin and splint.
Postoperative care: Splint for 2 weeks to control rotation, then a soft cast; pins and cast removed around 6 weeks; supervised hand therapy begins as edema/pain subside, with functional activity encouraged by 8-10 weeks.
3. External Fixation Used to maintain articular reduction during healing, particularly useful for highly comminuted distal radius fractures where ligamentotaxis helps hold length and alignment while fragments consolidate. Can serve as definitive treatment or as an adjunct to limited internal fixation.
4. Open Reduction and Internal Fixation (ORIF) / Plating Reserved for fractures where closed reduction is not anatomic, articular displacement persists, or comminution is severe enough that percutaneous pinning cannot maintain reduction. Locking volar plates are commonly used; Campbell's notes intramedullary fixation is a low-profile alternative that sits within the medullary canal, though unlike a locking plate it cannot itself be used as a reduction aid.
  • Campbell's Operative Orthopaedics 15th Ed. (2026), "Fractures of the Distal Radius," pp. 3635-3639 (Ch. 62)
If you want, I can go deeper into any one area - e.g. the specific classification systems (Frykman, Fernandez, AO), external fixation technique steps, ORIF/plating technique, or complications and malunion management - just let me know which.
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