Minimally invasive plate osteosynthesis, open reduction and plate fixation, and intramedullary nailing for humeral shaft fractures: A network meta-analysis of randomized controlled trials.
João Protásio Netto, Vincenzo Giordano, Nelson Elias et al.
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In 30 seconds
This network meta-analysis of randomized controlled trials compared minimally invasive plate osteosynthesis (MIPO), open reduction and plate fixation (ORPF), and intramedullary nailing (IMN) in adults with closed diaphyseal humeral fractures. Twelve trials involving 647 patients contributed to the primary analysis. Compared with ORPF, MIPO was associated with lower odds of iatrogenic radial nerve injury (OR 0.21, 95% CI 0.05-0.88; P = 0.033) and reoperation (OR 0.18, 95% CI 0.05-0.58). The authors caution that direct MIPO comparisons were few and estimates imprecise.
Key findings
- MIPO was associated with lower odds of radial nerve injury than ORPF (OR 0.21, 95% CI 0.05-0.88; P = 0.033).
- MIPO was associated with lower odds of reoperation than ORPF (OR 0.18, 95% CI 0.05-0.58) and IMN.
- IMN had higher odds of nonunion than MIPO (OR 4.82, 95% CI 1.18-19.74), based on a single direct trial.
- Radial nerve safety SUCRA rankings were 91% for MIPO, 56% for IMN, and 4% for ORPF.
Why it matters
Radial nerve injury, nonunion, and reoperation are relevant complications when selecting fixation for humeral shaft fractures. By distinguishing minimally invasive from open plating, this analysis offers comparative evidence that may help frame discussions of technique-specific risks. Its findings are not definitive: the evidence base is limited, and rankings reflect estimated relative effects rather than absolute event rates.
What to keep in mind
Direct MIPO comparisons were few and confidence intervals wide. The primary finding's significance depended on two middle-to-distal trials in leave-one-out analysis; the nonunion comparison with IMN came from a single direct trial.