Upper Arm Lift improves the shape and firmness of the upper arm. It is generally performed as an out-patient procedure. Patients may experience temporary bruising, swelling, soreness, numbness or fluid retention. Potential complications include scarring or irregularities in the contour of the skin. Patients generally return to work with a week and to strenous activity within a month. The result eliminates the wiggle and sag on the arm referred to as the 'bat wing.'