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MIPO associated with longer union times and higher malunion risk than intramedullary nailing in tibial fracturesDifferent surgical methods impact healing for lower leg fractures

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Key Takeaway
Note that MIPO may be associated with longer union times and higher malunion risk than intramedullary nailing.

This network meta-analysis evaluated several fixation strategies for distal tibial fractures, including ORIF, MIPO, EF + LORIF, IMN-IP, and IMN-SP. The analysis synthesized data from 2145 patients to compare outcomes such as operation time, fracture healing time, malunion, delayed union, and infection rates across these techniques.

Key findings indicate that MIPO was associated with a longer operative time than IMN-IP (MD = 8.23; 95% CI 0.44-16.01) and a longer time to union than IMN-IP (MD = 1.02; 95% CI 0.10-1.93). Regarding malunion, ORIF showed a lower risk than MIPO (RR = 0.30; 95% CI 0.11-0.82). MIPO also demonstrated a higher risk of malunion compared to EF + LORIF (RR = 3.26; 95% CI 1.08-9.80) and IMN-SP (RR = 4.03; 95% CI 1.30-12.48). While no significant differences were observed for delayed union or nonunion across techniques, infection risk was generally higher with ORIF and MIPO compared to EF + LORIF and intramedullary nailing-based strategies.

The authors note that no single strategy was consistently superior. The evidence is limited by imprecision and study-level heterogeneity. Clinicians should consider these findings when selecting fixation methods, noting that MIPO may be associated with longer union times and higher malunion risks compared to specific alternatives.

When a person suffers a fracture in the lower part of their shin bone, the choice of surgical technique is a big decision. Doctors use different methods to stabilize the bone, such as open surgery, minimally invasive plates, or internal nails. Each method has different impacts on how quickly the bone heals and the risk of complications.

A large review of 2,145 patients compared these methods. The findings showed that a minimally invasive plate (MIPO) often took longer to perform in the operating room and took longer for the bone to knit back together compared to certain types of internal nailing. Additionally, the study found that MIPO was linked to a higher risk of malunion, which is when a bone heals in an incorrect position, compared to other specific methods.

While some techniques showed lower risks for certain complications, no single surgery was found to be perfectly superior for everyone. Some results were less certain due to differences in how individual studies were conducted. Because every injury is unique, patients and doctors should discuss these specific surgical options and risks together.

What this means for you:
Different surgical methods for lower leg fractures vary in healing time and risk of bone misalignment.

Common questions

How does the MIPO technique compare to other surgeries?

The MIPO method was associated with longer operation times and a longer time for the bone to knit together compared to certain internal nailing methods. It also showed a higher risk of malunion, which means the bone healing in the wrong position, when compared to other specific surgical techniques.

What are the risks of infection with different surgeries?

The risk of infection was generally higher with open surgery (ORIF) and MIPO compared to techniques involving external fixation or internal nailing. However, some specific comparisons regarding infection risk remained uncertain due to the data available.

Is there one best way to fix a lower leg fracture?

The study did not find one single surgery that was consistently better than all others. While some methods had lower risks for certain issues, the best choice depends on the specific injury and the surgeon's assessment of the patient's needs.

Study Details

Study typeSystematic review
Sample sizen = 2,145
EvidenceLevel 1
PublishedSep 2026
View Original Abstract ↓
BACKGROUND: Multiple fixation options exist for distal tibial fractures, but the optimal approach remains controversial. Common techniques includeopen reduction and internal fixation(ORIF), minimally invasive plate osteosynthesis (MIPO), external fixation combined with limited open reduction and internal fixation (EF + LORIF), intramedullary nailing (IMN), and retrograde tibial nailing (RTN). METHODS: PubMed, Embase, Web of Science, and the Cochrane Library were searched through March 19, 2026. Network meta-analysis (R v4.5.1) assessed operation time, fracture healing time, malunion, delayed union/nonunion, and infection, reporting MDs or RRs with 95% CIs. RESULTS: Eleven randomized controlled trials and 18 cohort studies (2145 patients) were included. MIPO was associated with a longer operative time and a longer time to union than IMN-IP (MD = 8.23, 95% CI 0.44-16.01; and MD = 1.02, 95% CI 0.10-1.93, respectively). For malunion, ORIF had a lower risk than MIPO (RR = 0.30, 95% CI 0.11-0.82), whereas MIPO had a higher risk than EF + LORIF (RR = 3.26, 95% CI 1.08-9.80) and IMN-SP (RR = 4.03, 95% CI 1.30-12.48). ORIF, EF + LORIF, and IMN-SP also showed lower malunion risk than IMN-IP. No significant differences were observed for delayed union and nonunion. Infection risk was generally higher with ORIF and MIPO than with several comparators, particularly EF + LORIF and intramedullary nailing-based strategies. CONCLUSIONS: No single strategy was consistently superior. Operation time and impaired union ( delayed union and nonunion) did not differ significantly among techniques. MIPO may be associated with longer time to union than IMN-IP and higher malunion risk than EF + LORIF and IMN-SP. Infection risk appeared higher with ORIF and MIPO in network estimates, although several comparisons remained uncertain. Findings should be interpreted in light of imprecision and study-level heterogeneity. PROTOCOL REGISTRATION: INPLASY2025120055.
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