Intramedullary nails are routinely used in the treatment of fracture for femur and tibia. With rapidly expanding implant industry especially in India, it has become pertinent to have simple experimental performance evaluation procedures. In this context a unique and a simple experimental design for performance analysis of intramedullary interlocking nails has been carried out on cadaver dry bones. Inspite of in vivo studies done for finding out the forces acting during the healing period and for evaluation of implants, the major limitation of these studies being, the usage of implants customized to accommodate all the data procuring devices within it. Moreover an orthopaedician will not risk his patient by more weight bearing during the early postoperative phase for any experimental work.In this study cracks of various sizes are induced in a femur and tibia bone in the midshaft section. Strain gages are fixed above and below the crack and loads are applied in increments upto 2000N on all the sizes of the crack. The strain readings were found in good agreement with comparative work, which validated the experimental setup. The study concludes that as the crack size decreases, under various loads the strain value increases. When the strain results for the smallest crack size and the highest one are compared and if found to have a larger band, the implant can be termed as more effective. This work can also give an insight into optimizing the implant design and shall be a forerunner for further in vivo studies on early weight bearing. © Society for Biomaterials and Artificial Organs (India).