A hematoma block is an analgesic technique used to allow painless manipulation of fractures while avoiding the need for full anesthesia.[1]

When a bone is fractured as a result of an injury, the two fragments may be displaced relative to each other. If they are not, usually no treatment is required other than immobilisation in an appropriate cast. If displacement does occur, then the space separating the fragments fills with blood shed by the damaged blood vessels within the bone. This collection, or pool, of blood is known as a hematoma. Injection of a suitable local anesthetic by needle and syringe through the skin into this hematoma produces relief of the pain caused by the fracture, allowing the bones to be painlessly manipulated.

Complications

Hematoma blocks have a low risk of complications.[2]

References

  1. ↑ Tseng, Ping-Tao; Leu, Tsai-Hsueh; Chen, Yen-Wen; Chen, Yu-Pin (December 2018). "Hematoma block or procedural sedation and analgesia, which is the most effective method of anesthesia in reduction of displaced distal radius fracture?". Journal of Orthopaedic Surgery and Research. 13 (1): 62. doi:10.1186/s13018-018-0772-7. PMC 5869786. PMID 29580286.
  2. ↑ Dunn, Sean. "Hematoma Block For the Closed Reduction of Fractures" (PDF). Retrieved 18 May 2015.


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