fluid can be injected as desired in some exemplary embodiments the hollow outer shell 102 may be slightly permeable to fluid in such embodiments no pores may be necessary and the slight permeability to fluid of the hollow outer shell 102 may instead be used to diffuse liquid located within the spacer 100 turning now to exemplary fig5 an exemplary process flow diagram depicting a method by which an antibiotic dispensing spacer may be used to treat an infection may be depicted once an infection in a total knee replacement prosthetic has been diagnosed in a first operation a standard polyethylene spacer may be removed from the knee replacement prosthetic 502 the infection site may then be thoroughly irrigated and debrided in order to remove infected tissue 504 once the irrigation and debridement 504 is finished an antibiotic dispensing spacer having one or more internal reservoirs and having a shape similar to or identical with the standard polyethylene spacer removed from the knee replacement prosthetic may be selected and if necessary may be further reshaped for example modular components may be exchanged for other modular components or the antibiotic dispensing spacer may be modified or remolded the one or more internal reservoirs of the antibiotic dispensing spacer may be filled with one or more antibiotics and the antibiotic dispensing spacer may be put inside the knee replacement prosthetic in place of the standard polyethylene spacer 506 once the antibiotic dispensing spacer.