Single-use Efficiency Instruments With Patient Specific Technique (MyKnee®) Versus Traditional Metal Instruments With Conventional Surgical Technique

Inclusion Criteria: * Age 18 to 75 years * BMI ≤35 * Undergoing unilateral total knee arthroplasty due to osteoarthritis (primary or post-traumatic OA) * Able and willing to give consent and to comply with study requirements, including follow up visit at 6 weeks Exclusion Criteria: * Pregnant women or those seeking to become pregnant. Pregnancy test is administered prior to surgery as part of routine care by the hospital / surgery center for all female patients of childbearing potential * Is participating in another clinical study * Has inflammatory arthritis * Has knee avascular necrosis * Has severe deformity, defined as greater than 10 degrees varus or valgus relative to the mechanical axis * Has retained hardware in the knee that requires removal or interferes with Total Knee Arthroplasty (TKA) procedure