When should plates be used in pediatric fractures? Principles for responsible indication of minimally invasive fixation

Pediatric fractures pose unique challenges and often generate debate about the ideal method of fixation. Among various techniques available, plate fixation using minimally invasive approaches has developed a new role. The question of whether plates should be used in pediatric fractures illustrates the delicate decision-making required in pediatric orthopedics. Support from an AO research mini grant enabled thorough review of current literature, comparison of fixation techniques, and development of practical guidelines to help clinicians determine when plate fixation is truly indicated in children.

The landscape of pediatric fracture management

Not every pediatric fracture requires the use of a plate, nor should every pediatric fracture avoid it. In pediatric trauma, elastic stable intramedullary nailing (ESIN), an endomedullary fixation, has consistently demonstrated predictable and favorable outcomes in various situations. It has become widely accepted, particularly for diaphyseal fractures of the lower limb.

Yet, clinical practice continually reveals exceptions as not all fractures neatly fit into standard algorithms, and there are situations where the mechanical control ESIN offers may fall short. For instance, fractures that are unstable in length and cannot maintain satisfactory alignment under the stresses of muscle contraction and weight-bearing may not be ideal candidates for this technique.

Complex fracture patterns also present unique challenges. Long oblique or comminuted fractures involving intricate fracture lines or multiple fragments may compromise the effectiveness of standard fixation methods. Similarly, fractures located near the metaphyseal-diaphyseal junction are often less amenable to ESIN due to their transitional anatomy.

Additional considerations arise in adolescents with higher body weight, as the increased biomechanical demands can exceed the stabilizing capacity of ESIN. Furthermore, injuries resulting from high-energy trauma, especially those producing multifragmentary or segmental fracture patterns, may require alternative surgical approaches.

Ultimately, successful pediatric fracture management hinges on a thoughtful, individualized assessment. While ESIN remains a cornerstone for many diaphyseal injuries, each case must be evaluated on its own merits, balancing the specifics of the fracture with the needs and characteristics of the patient.

In these scenarios, clinicians must consider if it is reasonable to use a plate in a child and when such a decision is justified.

The biological principle as the core of decision-making

Children’s bones possess unique characteristics with increased potential for remodeling, thicker and biologically active periosteum, faster healing, and residual growth capacity. These features require that any surgical intervention respect the biological environment of the fracture site.

Historically, there has been reluctance to use plates in children due to concerns about disrupting growth or damaging biology. However, the evolution toward minimally invasive plate osteosynthesis (MIPO) has shifted this perspective. The bridge plate technique, performed through limited incisions with preservation of the fracture environment, maintains biology while providing relative stability.

Key biological concepts

• Remodeling: Children's bones can correct certain deformities over time, given the healing process and growth.
• Periosteum: This is thicker, highly vascular, and active, facilitating fast healing.
• Growth potential: Any surgical technique must respect the growth plates to avoid disturbing normal bone development.

The goal of modern fixation is to achieve stability without sacrificing these biological advantages. The minimally invasive approach with plates represents an advance, offering both mechanical control and protection of the biological milieu.

Clinical challenges and the real-world scenario

Fractures in children are not always simple. Complex, unstable fractures are frequent particularly in adolescents who are physically larger and subjected to greater biomechanical forces. Long oblique fractures, comminuted fractures, and metaphyseal-diaphyseal injuries illustrate situations where ESIN may provide insufficient control. In these cases:

• Bridge plate fixation can offer improved angular and rotational control.
• Biological preservation is possible with correct technique, using limited exposure and avoiding periosteal stripping.

We clinicians must decide how to choose the right method for the right patient balancing biology and mechanics.

From clinical question to structured analysis

Making the decision to use plate fixation in pediatric fractures requires clarity around the core factors that shape each case. Rather than relying on a single algorithm, surgeons should be guided by a set of principles that ensures each child receives the most appropriate treatment, balancing mechanical needs with biological preservation.

Key determining variables for plate indication

1. Age/skeletal maturity: Younger children have a remarkable capacity for bone remodeling, but as patients approach skeletal maturity, more rigid fixation may be warranted to address the increased demands.
2. Body weight: Heavier children need more robust conditions.
3. Fracture pattern: Complex or unstable fractures may benefit from plate fixation.
4. Anatomic location: Certain areas, especially near the metaphyseal-diaphyseal junction, may be less suited to flexible nails.
5. Surgical experience/available resources: Surgeon expertise and hospital infrastructure influence the choice.
6. Patient and socioeconomic factors: Access to follow-up, implants, and post-operative care can affect decision-making.

The decision we must make is not only whether to use a plate or not, but which fixation strategy offers the safest path to healing while respecting the unique biology of the pediatric skeleton.

Geographic and socioeconomic realities and expertise may limit regular follow-up or implant choices. In such contexts, achieving adequate initial stability, sometimes favoring plate fixation, becomes even more important. Systematic criteria for indication will optimize outcomes and encourage reproducibility and coherence across different clinical teams.