Optetrak Posterior Stabilized Versus Optetrak Hi-Flex
Optetrak Posterior Stabilized Versus Optetrak Hi-Flex
The purpose of this study is to evaluate the differences in clinical outcomes between the
 Optetrak® Posterior Stabilized ("Optetrak® PS", Exactech, Gainesville, FL) and the Optetrak®
 Hi-Flex™ ("Optetrak® HF", Exactech, Gainesville, FL) knee designs. The null hypothesis is
 that there is no difference in postoperative knee flexion between the Optetrak® PS and
 Optetrak® HF groups.
Inclusion Criteria:

 1. Patient is indicated for total knee replacement with a posterior stabilized device.

 2. Patient is between the ages of 50 and 80 years old

 3. Patient has a Body Mass Index (BMI) < 35.0 using the following method (or comparable
 method)

 • BMI = Weight (lbs.) ÷ Height (in.)2 x 703

 4. Patient is skeletally mature.

 5. Patient is willing to participate by complying with pre and postoperative visit
 requirements, over at least a 1-year period, including completion of studyrequired
 questionnaires.

 6. Patient is willing and able to review and sign a study Informed Consent.

 Exclusion Criteria:

 1. Patient has a Body Mass Index (BMI) > 35.0 using the following method (or comparable
 method)

 • BMI = Weight (lbs.) ÷ Height (in.)2 x 703

 2. Patient is skeletally mature

 3. Patient is willing to participate by complying with pre and postoperative visit
 requirements, over at least a 1-year period, including completion of study required
 questionnaires.

 4. Patient is willing and able to review and sign a study Informed Consent.