A ligament graft for replacement of an anterior or posterior cruciate ligament in a patient, the ligament graft may be composed of allogenic, xenogenic, or synthetic material, and the ligament graft may include a bone plug at one or both ends of the graft Suitable allograft tissue includes human cadaveric tissue including semitendinosis, gracilis, quadriceps tendon, small intestine submucosa, and other ligaments or tendons