Abstract

Thousands of external fixators are applied for distraction osteogenesis each year. Determining when it is safe to remove the fixator can be difficult. The purpose of this study was to survey an international group of external fixation surgeons to determine their current practice patterns surrounding external fixator removal. A 10-question, open-ended survey was emailed to members of the Limb Lengthening and Reconstruction Society. Responses were recorded, and statistical analysis was performed. Pearson's chi-square test and likelihood ratio were used when indicated. A total of 124 surveys were sent, and 44 responses were received (35% response rate). The top 5 responses for determining when it is safe to remove a fixator were full weight bearing (75%), 3 cortices (71%), no pain (55%), after dynamization (55%), and duration of time (30%). Forty-eight percent of respondents routinely dynamized the frame prior to removal. Significantly fewer surgeons who dynamized the frame protected the limb after removal (P=.046). Physicians who dynamized the frame tended to use a less-constricting device for protection (boot or brace vs cast) than those who did not dynamize (P=.016). This study showed that most surgeons used radiographs and clinical evaluation to determine timing of fixator removal. Only 23% reported using computed tomography. Most surgeons dynamized the fixator prior to removal. Those who dynamized the frame were more confident in the regenerate healing. Although this study offers insight into what experienced surgeons do in their daily practice, it reveals many areas for improvement in the literature. [Orthopedics. 2017; 40(5):e876-e879.].

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