A 35-year-old man presents 4 hours after a fall onto a flexed wrist. Examination reveals a 'garden spade' deformity with volar angulation and displacement of the distal radius. Neurovascular examination is normal. X-rays confirm a Smith fracture (volar Barton type) with intra-articular extension and 4 mm step-off at the radiocarpal joint. After initial analgesia, what is the most appropriate next step in management?

Explanation

## Clinical Scenario Analysis This is a **Smith fracture (volar Barton type)** — a volar-displaced intra-articular fracture of the distal radius with **>2 mm articular step-off**. This is a **surgical indication**. ## Key Point: **Smith fractures with intra-articular involvement and significant displacement (>2 mm step-off) require ORIF** to restore anatomic alignment, prevent post-traumatic arthritis, and ensure functional wrist motion. ## Colles vs. Smith Fractures: Comparison | Feature | Colles Fracture | Smith Fracture | | --- | --- | --- | | **Displacement** | Dorsal | Volar | | **Deformity** | 'Dinner fork' | 'Garden spade' | | **Mechanism** | Fall on extended wrist | Fall on flexed wrist | | **Intra-articular involvement** | Common (50–60%) | Very common (70–80%), especially Barton type | | **Conservative management** | Suitable for most (if extraarticular or <2 mm step-off) | Limited; Barton type almost always needs surgery | | **ORIF indication** | Intra-articular >2 mm, severe comminution, failed reduction | Barton type (volar), intra-articular >2 mm, young patient | ## Why ORIF for This Case? 1. **Intra-articular extension with 4 mm step-off** — exceeds the 2 mm threshold for acceptable articular incongruity 2. **Barton type (volar)** — inherently unstable; high redisplacement rate with conservative treatment 3. **Young, active patient (35 years)** — functional demands require anatomic reduction to prevent arthritis 4. **Volar displacement** — difficult to maintain in cast; tends to redisplace ## High-Yield: **Smith fractures are surgical unless:** - Extra-articular (rare) - Minimal displacement (<2 mm step-off) - Elderly, low-demand patient with significant comorbidities **Barton fractures (volar or dorsal intra-articular) are ALWAYS surgical.** ## Surgical Approach ```mermaid flowchart TD A[Smith Fracture with Intra-articular Step-off]:::outcome --> B{Volar or Dorsal Barton?}:::decision B -->|Volar Barton| C[Volar plate ORIF]:::action B -->|Dorsal Barton| D[Dorsal plate ORIF]:::action C --> E[Restore articular surface]:::action D --> E E --> F[Restore radial height & inclination]:::action F --> G[Post-op immobilization 2-3 weeks]:::action G --> H[Early ROM exercises]:::action ``` ## Surgical Technique | Aspect | Details | | --- | --- | | **Approach** | Volar (Henry) approach for volar Barton; dorsal (Thompson) for dorsal Barton | | **Fixation** | Volar plate (2.4 mm DCP) with screws; anatomic reduction of articular surface | | **Imaging** | Intraoperative fluoroscopy to confirm reduction and screw placement | | **Post-op** | Above-elbow cast or splint for 2–3 weeks; early ROM after immobilization | ## Clinical Pearl: **Volar Barton fractures have a high rate of redisplacement with conservative treatment** (up to 50–70%). Volar plate fixation is the gold standard and provides early mobilization. [cite:Rockwood & Green's Fractures in Adults Ch 20]