Distal radius fractures are among the most common injuries in children. In young children, the remodeling potential is often remarkable, especially near the distal physis, which allows for the acceptance of residual deformities that would require different treatment in adults. [1,2]
However, the margin is not the same for everyone. Age, fracture location, direction of angulation, displacement, involvement of the ulna, stability after reduction, and remaining growth significantly alter the indication. [2]
Remodeling: How Much Can We Trust Growth
The distal radius contributes significantly to forearm growth and has a good ability to progressively correct some deformities. In younger children, this often allows for conservative treatment even when the X-ray is not perfectly anatomical. [1,2]
However, this data must be applied to the individual fracture. A stable torus fracture, a complete metaphyseal fracture, a physeal injury, and a severely displaced fracture do not behave the same way.
The multicenter CRAFFT trial, published in The Lancet in 2026, added important data. 750 children aged 4 to 10 years with severely displaced distal radius fractures were randomized to either simple cast immobilization or surgical reduction; 329 had a completely off-ended fracture. At three months, the surgically treated group showed a small functional advantage, below the threshold considered clinically important; at 6 and 12 months, the difference had disappeared. Surgery also resulted in more procedural complications and higher costs. [5]
In children in this age group, even a marked radiographic deformity can therefore have a very good functional outcome without necessarily pursuing an anatomical reduction.
Why Early Follow-up Remains Useful
A fracture treated in a cast can lose its reduction in the following days. In a study on distal metaphyseal radius fractures undergoing closed reduction and immobilization, residual translation after reduction was one of the main factors associated with loss of alignment. [3]
Follow-up therefore serves to verify three things: that the type of fracture has been correctly classified, that the alignment remains within acceptable limits for age and location, and that the immobilization continues to hold the limb securely.
This does not mean that every slight radiographic variation requires a new reduction. The CRAFFT study has made it even clearer how important it is to avoid applying adult criteria to young children. [5]
The Cast Does Not Have the Same Role in All Fractures
In unstable fractures, the quality of the cast matters. Swelling that reduces in the first few days, poorly molded immobilization, or a cast that has become too loose can facilitate secondary displacement.
A torus fracture, on the other hand, has a much simpler course and often does not require the same level of surveillance. The indications for follow-up should be proportionate to the stability of the injury. [1,2]
When Reduction or Stabilization Becomes More Likely
Neurovascular problems, open fractures, unstable patterns, joint involvement, certain physeal injuries, older age, and situations not represented in trials modify the reasoning.
In adolescents, there remains some remodeling potential, but it is less than in younger children. Even in this age group, many functional outcomes are good with non-surgical treatment when residual alignment is acceptable. [4]
What I Evaluate at Follow-up
The X-ray should be interpreted together with the child's age and clinical examination. I am interested in understanding the distance from the physis, the type of displacement, any associated ulna fracture, the stability of the situation, and the quality of the immobilization.
I also check for pain, mobility, and perfusion of the fingers. A significant increase in pain, cold or pale fingers, paresthesias, excessive swelling, or a damaged cast require a more rapid re-evaluation.
When to Have Your Child Re-evaluated Sooner Than Expected
The follow-up appointment should be brought forward if there is increasing pain, changes in sensation or finger perfusion, a cast that is too tight or too loose, obvious deformity, or a clinical worsening inconsistent with the expected course.
In displaced fractures, the problem is not always achieving a perfect X-ray. It is understanding how much deformity that child can truly remodel and recognizing in time fractures that are deviating from a safe course.
Bibliography
[1] Pediatric Orthopaedic Society of North America. Distal Radius and Galeazzi Fractures. POSNA Study Guide.
Source: POSNA.
[2] Liu DS, Murray MM, Bae DS, May CJ. Pediatric and Adolescent Distal Radius Fractures: Current Concepts and Treatment Recommendations. Journal of the American Academy of Orthopaedic Surgeons. 2024;32(21):e1079-e1089. DOI: 10.5435/JAAOS-D-23-01233.
DOI: https://doi.org/10.5435/JAAOS-D-23-01233
[3] Pretell Mazzini J, Beck N, Brewer J, Baldwin K, Sankar W, Flynn J. Distal metaphyseal radius fractures in children following closed reduction and casting: can loss of reduction be predicted? International Orthopaedics. 2012;36(7):1435-1440. DOI: 10.1007/s00264-012-1493-x.
DOI: https://doi.org/10.1007/s00264-012-1493-x
[4] Greig D, Silva M. Management of Distal Radius Fractures in Adolescent Patients. Journal of Pediatric Orthopaedics. 2021;41 Suppl 1:S1-S5. DOI: 10.1097/BPO.0000000000001778.
DOI: https://doi.org/10.1097/BPO.0000000000001778
[5] Perry DC, Zimmermann A, Achten J, et al; CRAFFT Study Investigators. Non-surgical casting versus surgical reduction for children with severely displaced distal radial fractures (the CRAFFT Study): a multicentre, randomised, controlled non-inferiority trial and economic evaluation. Lancet. 2026;407(10538):1538-1548. doi:10.1016/S0140-6736(26)00409-5. PMID: 41965242.
PubMed: https://pubmed.ncbi.nlm.nih.gov/41965242/
DOI: https://doi.org/10.1016/S0140-6736(26)00409-5
Disclaimer: content for general informational purposes. It does not replace a medical evaluation.
