- Subject, who, in the opinion of the Clinical Investigator at the time of preoperative planning, are suitable for implantation using TruMatch™ instrumentation and whose surgical plan (patient proposal) is approved. For example, no femoral nails/bone plates that extend into the knee, i.e. within 8cm of joint line; no metal device that could cause CT scatter about the knee and no deformities greater than 15 degrees of fixed varus, valgus, or flexion