Local anesthetic injections are used to cause analgesia in the painful muscles while a patient completes physical therapy. The longer acting the medication is (e.g., 7–20 days), the fewer injections the patient will need during an 8 to 12 week course of physical therapy.

Role of local anesthetics in pain management Patients who complain painful muscles are recommended physical therapy. Physical therapy can’t be performed unless the pain is managed as utmost priority. For this purpose, local anesthetics are employed. The dose of local anesthetics depends upon the duration of physical therapy. Physical therapy of 8-12 weeks requires long-acting medications with action for 7-20 days. Moreover, long-acting local anesthetics also aid in the diagnosis and management of sympathetically mediated pain syndromes and localized peripheral neuropathies.