After you have checked in to your surgery center an IV (intravenous line) will be placed in the vein in your arm or hand so that the anesthesiologist, or another medical professional, and easily administer needed medications. You will be placed under general anesthesia and will sleep through the surgery. Incisions will be made in the area around the shoulder to access the humerus.
Once the surgeon has gained access to the bone, the head of the humerus is removed along with any extraneous bone or tissue. The surgeon then makes a cavity in the top of the humerus to hold the stem of the prosthetic implant. If reshaping of the glenoid cavity (the cavity in the scapula) needs to be reshaped it will be done at this time.
Once the joint, and surrounding bones, are properly shaped and placed they will be secured using screws and medicated cement. Cushioning material will be added to the glenoid cavity to avoid bone to bone contact and reduce friction. This cushioning prevents pain and aids in mobility.