Hematoma Block for Ankle Fractures: A Safe and Efficacious Technique for Manipulations

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Abstract
The purpose of this study was to examine the safety and efficacy of the hematoma block technique for closed ankle fracture manipulation. Twenty-three patients received a hematoma block with or without supplemental analgesia and/or sedation for the manipulative reduction of an ankle fracture, and 37 patients received parenteral agents alone. At an average of 12 months post-reduction, patients were administered a questionnaire concerning their level of discomfort surrounding the manipulation of their acute injury. Their experienced level of pain was recorded on a pain analog scale at the time of injury, at the time of reduction, and at the time of the questionnaire. Other queries were made regarding their recall of other aspects of their acute care treatment. The hematoma block group noted their pain differential to be 3.4 less during reduction compared with the time of injury. In the 17% subgroup of hematoma block patients who received no supplemental parenteral analgesia, the pain differential was noted to be 4.5 less during reduction. This was in contrast to the non-hematoma block group, which rated their pain differential to be 0.6 between injury and reduction. In addition, the hematoma block procedure resulted in no associated complications. The results of this study led us to conclude that the hematoma block with or without supplemental analgesia for the manipulation of ankle fractures was safe and effective and is a useful technique. This is particularly true in those patients in whom an adequate dosage of parenteral medication is contraindicated or unsafe.

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