Standards of care in orthopaedic lower limb surgery have evolved substantially over recent decades. Improvements in surgical tools, implants and accurate pre-operative planning have enhanced surgeon precision. Navigation systems[1,2], patient-specific instrumentation[3] and 3-Dimensional (3D) image-based planning[4] were developed in the late 1990 s and have been used primarily for joint replacements and osteotomies. Moreover, knee arthroplasty (KA) has seen a paradigm shift over the last decade…