Evaluate the Safety, Functionality, and the Quality of Life of Patients Who Receive the Freedom Total Knee ® System

Inclusion Criteria: * Males and Females 40-80 years of age * Patients requiring knee prosthesis, and have been evaluated as appropriate candidates for aTKA by their orthopedic surgeon * Patients who understand the conditions of the study and are willing and able to comply with the post-operative scheduled clinical and the prescribed rehabilitation Exclusion Criteria: * Previous major knee replacement of the affected knee joint * Other significant disabling problems from the muscular-skeletal system than in the knees (i.e muscular dystrophy, polio, nueropathic joints) * Obese patients where obesity is severe enough to affect subject's ability to perform activities of daily living (body mass index, kg/m2: BMI \> 35) * Patients who are found to be non-compliant by their physician * Patients with or having; malignancy - active malignancy, active or suspected infection, Paget's disease, renal osteodystrophy, immunologically suppressed, sickle cell anemia, and systemic lupus erythmatosus. * The patient has a neuromuscular or neurosensory deficit. * Female patients planning a pregnancy during the course of the study. * Patients, who are mentally incompetent or are unlikely to be compliant with the prescribed post-operative routine and follow-up evaluation schedule. * Varus or valgus deformity \> 20 degrees