The most commonly used AAS in medicine are testosterone and its various esters (but most commonly testosterone undecanoate , testosterone enanthate , testosterone cypionate , and testosterone propionate ),  nandrolone esters (most commonly nandrolone decanoate and nandrolone phenylpropionate ), stanozolol , and metandienone (methandrostenolone).  Others also available and used commonly but to a lesser extent include methyltestosterone , oxandrolone , mesterolone , and oxymetholone , as well as drostanolone propionate , metenolone (methylandrostenolone), and fluoxymesterone .  Dihydrotestosterone (DHT; androstanolone, stanolone) and its esters are also notable, although they are not widely used in medicine.  Boldenone undecylenate and trenbolone acetate are used in veterinary medicine . 
Over the last 10 years, we have worked with industry to modify the plates and screws so that they are easy to use and the process of plating is not time consuming. We now have experience in plating over 2000 patients with a very low incidence of wound complications and a dramatic improvement in the patients’ perception of their wounds. Plating of the sternum provides secure closure and allows for quicker recovery of patients. Indeed, patients who have had previous cardiac surgery insist that their second procedure was associated with a lot less pain (presumably because there is less instability of the sternum).