The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
Antibiotic Gentamicin, when mixed with DePuy Orthopaedics bone cement products, may weaken the bond between cement and bone in joint replacement patients, and cause the prosthetic to slide off of the bone after the patient has suffered a great deal of pain and immobility.
Few reports have been able to effectively eradicate infection while preserving anatomy and function of the shoulder. The purpose of the present article is to report our experience in treating the infected shoulder arthroplasty and shoulder sepsis with the use of 2 types of antibiotic-impregnated cement spacers.