Pulsed Electromagnetic Fields for Analgesia Post Mastectomy

This study is testing whether pulsed electromagnetic field (PEMF) therapy — a non-invasive device that delivers low-level electromagnetic pulses to tissue — can reduce pain after mastectomy (surgical removal of a breast) with reconstruction. Post-mastectomy pain is common and can be difficult to manage; PEMF therapy has shown promise in reducing inflammation and pain in other surgical contexts. **You may be eligible if:** - You have breast cancer and are undergoing a single-sided (unilateral) mastectomy with reconstruction - You are not having axillary lymph node removal as part of your surgery **You may NOT be eligible if:** - You have a pacemaker, implantable defibrillator, nerve stimulator, or other active electronic device near the treatment area - You are pregnant - You have amyloidosis, sarcoidosis, scleroderma, infectious arthritis, Paget's disease, or tumors in the joints Talk to your doctor to see if this trial is right for you.