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.
This method provides relief from the pain caused by the fracture by injecting a suitable local anesthetic into the blood clot, enabling the bones to be manipulated without causing any pain or discomfort.