Study Type
Narrative review
Algorithm-based clinical synthesis
Why This Matters
Pediatric bone sarcoma reconstruction remains one of the most challenging areas in orthopaedic oncology due to small bone size, growth plate involvement, and lack of standardized treatment pathways
Key Findings
1. Biological Reconstruction is Preferred in Intercalary Defects
Massive bone allograft (MBA) remains the main option
Vascularized fibula (FVFG) supports healing
Especially important in diaphyseal resections
2. Defect Size Drives Strategy
<15 cm → MBA alone often sufficient
>15 cm → MBA + FVFG recommended
Larger defects need biological augmentation
3. Osteoarticular Reconstruction Has No Clear Winner
Options include:
Modular prosthesis
Expandable prosthesis
Allograft–prosthesis composite
Outcomes and complications are comparable across methods
4. Age is a Critical Decision Factor
<5 years → rotationplasty
6–10 years → expandable prosthesis
>10 years → modular prosthesis
Growth potential is a major determinant of reconstruction choice
5. Lower Limb vs Upper Limb Matters
Lower limb → limb length discrepancy = major issue
Upper limb → mostly cosmetic
Influences aggressiveness of reconstruction
6. Allograft–Prosthesis Composite is a Key Hybrid Option
Preserves bone stock
Allows future revision
Particularly useful in young patients
Clinical Implications
Reconstruction must be individualised
Key decision variables:
Age
Defect size
Location
Growth potential
No universal gold standard exists
Limitations
Lack of high-quality comparative studies
Heterogeneous patient populations
Algorithm not prospectively validated
Pediatric oncologic reconstruction is fundamentally different from adults.
The real decision is not “which technique is best?” but. → “which compromise is acceptable for this child?”
Growth plate preservation and future revision potential should guide strategy
Clinical Pearls
Biological reconstruction dominates diaphyseal defects
FVFG is most useful in long defects (>15 cm)
Expandable prosthesis = solution for growing skeleton
Allograft-based techniques preserve future options