Surgical Repair of Displaced Mid-Shaft Clavicle Fractures
For displaced midshaft clavicle fractures in adults, use either plate fixation or intramedullary nailing—both achieve equivalent long-term outcomes, but choose plate fixation when significant comminution is present. 1
Primary Surgical Decision: Surgery vs. Conservative Management
The 2023 AAOS guidelines provide a strong recommendation for surgical treatment of displaced midshaft clavicle fractures in adults, based on:
- Higher union rates (up to 15% nonunion risk with conservative treatment)
- Better early patient-reported outcomes
- Faster return to work and sport
- Reduced symptomatic malunion rates 1
Important caveat: Long-term outcomes (beyond 1 year) are similar between surgical and nonsurgical treatment, so both remain valid options. The decision hinges on patient priorities regarding early recovery versus avoiding surgical risks 1.
Surgical Technique Selection
Plate vs. Intramedullary Nail (Moderate Recommendation)
Both techniques produce equivalent long-term clinical outcomes with similar complication rates 1. Your choice should be guided by:
Choose plate fixation when:
- Significant fracture comminution is present (plates handle fragments better) 1
- Complex fracture patterns with 3-4 fragments 2
- Posterior or inferior fragments need capture 3
Choose intramedullary nailing when:
- Simple two-part fractures
- Minimally invasive approach is prioritized
- Patient desires smaller incision 4
Recent evidence shows retrograde intramedullary screw nailing achieves 100% union rates with mean incision length of only 13.9 mm and excellent DASH scores (18.8 at 12 months) 4. However, the guideline evidence remains the priority, and both techniques are equivalent 1.
Plate Fixation Specifics
Single Plate vs. Dual Plating
While the AAOS guidelines focus on single-plate techniques, emerging research suggests dual mini-fragment plate fixation reduces reoperation risk by nearly 8-fold compared to single plating (HR 7.62) 5. This represents the highest quality recent evidence on plate configuration.
Dual plating advantages:
- Reoperation rate: 0.005 per person-years (vs. 0.031 for superior, 0.026 for anterior single plates)
- Lower rates of symptomatic hardware, nonunion, and infection 5
Plate Positioning (Limited Evidence)
If using single-plate fixation:
- Anterior-inferior plating may reduce implant removal rates compared to superior plating 1
- Manufacturer-contoured anatomic plates show lower rates of implant removal or deformation 1
Managing Comminution
For comminuted fractures requiring plate fixation:
- Add 2.7mm interfragmentary screws for fragment control 2
- Consider suture cerclage augmentation for posterior/inferior fragments difficult to capture with lag screws 3, 6
- Cerclage augmentation shows 0% mechanical complications but increases operative time (101 min vs. 82 min for plate-only) 6
Minimally Invasive Approaches
Minimally invasive plate osteosynthesis (MIPO) with mini-open technique demonstrates:
- Reduced supraclavicular nerve injury and numbness
- Smaller incisions and less blood loss
- Better cosmetic satisfaction
- Equivalent DASH and Constant-Murley scores at 12 months 7
This represents a technical refinement rather than a different fixation method.
Common Pitfalls to Avoid
Don't use LIPUS bone stimulators for acute midshaft fractures—moderate recommendation against this based on lack of efficacy 1
Assess fracture displacement with upright radiographs, not supine films, which underestimate displacement 1
In adolescents ≤18 years, surgical treatment offers no benefit over conservative management and carries substantial implant removal rates—avoid surgery unless compelling indication 1
Counsel smokers aggressively—tobacco increases nonunion rates and worsens clinical outcomes 1
For lateral clavicle fractures with coracoclavicular ligament disruption, consider surgical repair despite limited evidence 1
Postoperative Management
- Immobilize in a simple sling (not figure-of-eight brace) for 4 weeks 1
- Progressive physiotherapy after immobilization period
- Expect near-complete shoulder motion within 3 weeks with proper fixation 2
Algorithm Summary
Step 1: Confirm displacement on upright radiographs
Step 2: If adult with displaced fracture → Offer surgery (strong recommendation)
Step 3: Assess comminution:
- Significant comminution → Plate fixation (consider dual plating for lowest reoperation risk)
- Minimal comminution → Either plate or intramedullary nail acceptable
Step 4: If plating with comminution → Add interfragmentary screws or cerclage for fragment control
Step 5: Consider MIPO technique for improved cosmesis and nerve preservation
The evidence strongly supports surgical intervention for displaced fractures in adults prioritizing early return to function, with technique selection based primarily on fracture pattern complexity 1, 5.