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Closed reduction and cast immobilization of overriding distal forearm fractures under nitrous oxide as conscious sedation without the use of imaging control

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MUSCULOSKELETAL SURGERY Aims and scope Submit manuscript

Abstract

Purpose

The management of overriding distal forearm fractures is still controversial. This study aimed to evaluate the efficacy of immediate closed reduction and cast immobilization (CRCI) at the emergency department (ED) using equimolar nitrous oxide (eN2O2) as conscious sedation, and without the use fluoroscopic assistance.

Methods

Sixty patients with overriding distal forearm fracture were included in the study. All procedures were performed in the ED without fluoroscopic assistance. Antero-posterior and lateral wrist radiographs were taken after CRCI. Follow-up radiographs were taken 7 and 15 days post-reduction, and at cast removal to evaluate callus formation. Depending on the radiological outcome, two groups of patients could be identified: Group 1 (satisfactory reduction and maintenance of alignment) and Group 2 (poor reduction or secondary displacement requiring further manipulation and surgical fixation). Group 2 was additionally divided into Group 2A (poor reduction) and Group 2B (secondary displacement). Pain was assessed using Numeric Pain Intensity (NPI) score, while functional outcome was measured according to Quick DASH questionnaire.

Results

Mean age at the time of injury was 9.2 ± 2.4 years (range, 5–14). Twenty-three (38%) patients were aged between 4 and 9 years old, 20 (33%) patients between 9 and 11, 11 (18%) patients between 11 and 13, and 6 (10%) patients between 13 and 14. The mean follow-up time was 45.6 ± 12 months (range, 24–63). Satisfactory reduction with maintenance of alignment was achieved in 30 (50%) patients (Group 1). Re-reduction was performed in the remaining 30 (50%) patients (Group 2) due to poor reduction (Group 2A) or secondary displacement (Group 2B). No complications related to the administration of eN2O were recorded.

No statistically significant difference could be identified between the three groups for any clinical variable (Quick DASH and NPI).

Conclusion

Overriding distal forearm fractures may be safely treated with CRCI at ED using eN2O2 as conscious sedation. However, fluoroscopic assistance during CRCI might significantly improve the quality of reduction thus avoiding further treatment as the lack of relaxed muscle can restrain reduction.

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Acknowledgements

The authors have no relevant financial or non-financial interests to disclose.

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Authors and Affiliations

  1. Orthopedic Surgery Department, Ospedale Degli Infermi, Via Rivalta 29, 10098, Rivoli, Italy

    A. Rava

  2. Pediatric Orthopedic Surgery Department, Regina Margherita Children’s Hospital, Piazza Polonia 94, 10126, Turin, Italy

    F. Alberghina & M. Cravino

  3. Dept. of Pediatric Orthopedic Surgery, Lille University Center, Jeanne de Flandre Hospital, Av. Eugène Avinée, 59000, Lille, France

    F. Canavese

  4. Pediatric Orthopedic Surgery Department, Vittore Buzzi Children’s Hospital, Via Lodovico Castelvetro 32, 20154, Milan, Italy

    A. Andreacchio

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  1. A. Rava
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Rava, A., Alberghina, F., Cravino, M. et al. Closed reduction and cast immobilization of overriding distal forearm fractures under nitrous oxide as conscious sedation without the use of imaging control. Musculoskelet Surg 107, 413–421 (2023). https://doi.org/10.1007/s12306-023-00785-y

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