Inclusion Criteria:  Patients ≥18 years of age Surgical candidates undergoing primary TKA Surgical candidates with pre-operative flexion contracture of 10 degrees or greater Patient is willing to cooperate and follow study protocol and visit schedule  Exclusion Criteria:  Patient is pregnant Patient is unable to provide written consent Patient has psychiatric disorder that precludes safe study participation Patients with a prior history of surgery in the affected knee Vulnerable patient populations