What Factors Influence Union and Refracture of Congenital Pseudarthrosis of the Tibia? A Multicenter Long-term Study

Area of Science:

• Orthopedic surgery
• Pediatric orthopedics
• Bone regeneration

Background:

• Congenital pseudarthrosis of the tibia (CPT) presents a significant challenge in pediatric orthopedics.
• Understanding factors influencing treatment success is crucial for improving patient outcomes.

Purpose of the Study:

• To identify factors affecting the union, refracture rates, and long-term tibial integrity in children with congenital pseudarthrosis of the tibia (CPT).

Main Methods:

• Analysis of data from 119 children with Crawford-type IV CPT, followed to skeletal maturity.
• Logistic regression and recursive partitioning analyses were employed to assess variable associations with treatment outcomes.

Main Results:

• Primary union was achieved in 86% of cases, with 69% maintaining sound union at maturity.
• Use of bone morphogenetic protein (OR=3.89) and combined Ilizarov/intramedullary nailing (OR=6.19) were associated with higher risks of union failure or unsound union.
• Recursive partitioning indicated better outcomes with the Ilizarov technique, joint transfixation, cortical grafts, and fibula preservation; poorer outcomes were linked to bone morphogenetic protein and combined nailing techniques.

Conclusions:

• Further research with larger, prospectively collected data is necessary to definitively establish factors influencing CPT treatment outcomes.
• A multicenter registry approach may facilitate the collection of robust data for future studies.