Early Botulinum Toxin Injections in Infants With Musculoskeletal Disorders: A Systematic Review of Safety and Effectiveness

Publication date: June 2018

Source: Archives of Physical Medicine and Rehabilitation, Volume 99, Issue 6

Author(s): Jean-Sébastien Bourseul, Anais Molina, Mael Lintanf, Laetitia Houx, Emmanuelle Chaléat-Valayer, Christelle Pons, Sylvain Brochard

Abstract

Objective

To report current evidence regarding the safety of intramuscular botulinum toxin injection (BTI) in children with orthopedic- and neurologic-related musculoskeletal disorders >2 years of age.

Data Sources

PubMed, Cochrane Library, and ScienceDirect, Google Scholar, and Web of Science.

Study Selection

Two reviewers independently selected studies based on predetermined inclusion criteria.

Data Extraction

Data relating to the aim were extracted. Methodologic quality was graded independently by 2 reviewers using the Physiotherapy Evidence Database scale for randomized controlled trials (RCTs) and the Downs and Black evaluation tool for non-RCTs. Level of evidence was determined using the modified Sackett scale.

Data Synthesis

Data of 473 infants were analyzed. Fifty-five infants had cerebral palsy, 112 had obstetric brachial plexus palsy, 257 had clubfoot, and 44 had congenital torticollis. No studies reported any severe adverse event that could be attributed to the BTI. The rate of mild to moderate adverse events reported varied from 5% to 25%. Results regarding efficacy were preliminary, dependent on the pathology, and limited by the small number of studies and their low levels of evidence.

Conclusions

BTI is already widely used as an early treatment for this age group. The safety profile of BTI in infants appears similar to that of older children and risks appear more related to the severity of the pathology and the location of the injections than to the toxin itself. Regarding effectiveness, other studies with higher levels of evidence should be carried out for each specific pathology.

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