ROM Outcomes in Patients Undergoing a Primary TKA

Will Visual Affirmation of Knee Range of Motion (ROM) Affect Patient Outcomes in Patients Undergoing a Primary Total Knee Arthroplasty (TKA)? A Prospective, Randomized Study.

The goal of this prospective, randomized study is to compare the outcomes of patients undergoing primary TKA after photographing final knee range of motion immediately post-operatively and sharing these photographs with patients at their first follow-up appointment versus a group that does not see a photograph.

The goal of this prospective, randomized study is to compare the outcomes of patients undergoing primary total knee arthroplasty (TKA) after photographing final knee range of motion immediately postoperatively and sharing these photographs with patients at their first follow-up appointment versus a group that does not see a photograph. The knee will be photographed in maximum flexion and extension. The primary objectives will be to compare the range of motion of the operative knee at 2 weeks and 6 weeks postoperatively. In the investigator's institution, patients who have failed to achieve 90 degrees of flexion at a postoperative period of 6 weeks undergo manipulation of the knee under anesthesia (MUA). The investigators will also measure how many patients require MUA in the photograph group and non-photograph group. MUA will be performed if patients fail to achieve 90 degrees of flexion at 6 weeks post-op.

40-50 arms: patients undergoing a unilateral, cementless primary TKA, secondary to osteoarthritis will be shown a photograph of their knee, photographed in maximum flexion and extension, at 2 weeks postoperatively.

40-50 arms: patients undergoing a unilateral, cementless primary TKA, secondary to osteoarthritis will not be shown a photograph of their knee, photographed in maximum flexion and extension, at 2 weeks postoperatively.

Patients who undergo primary TKA surgery will then be shown a photograph of their knee at 2 weeks postoperative.

Patients who undergo primary TKA surgery will not be shown a photograph of their knee at 2 weeks postoperative.

WOMAC score. The score is on a scale from 0-100. In contrast to the Knee Society Score, on the WOMAC a lower value represents a better outcome

WOMAC score. The score is on a scale from 0-100. In contrast to the Knee Society Score, on the WOMAC a lower value represents a better outcome

Loss of knee motion is defined as failure to achieve greater than 100 degrees of active flexion. Manipulation under anesthesia is an outpatient procedure performed by orthopedic surgeon to help improve patient's range-of-motion.

Total Tourniquet Time is the number of minutes that the tourniquet is inflated, as defined in minutes.

Estimated Blood Loss as defined by the amount of intraoperative blood loss measured in cubic centimeters (cc).

Number of Participants with postoperative complications. A postoperative complication is defined as any diagnosis or condition that necessitates a re-operation or procedure on the surgical knee

Inclusion Criteria: Patient is between the age of 22-89 Patient is scheduled to undergo a unilateral, cementless primary TKA, secondary to osteoarthritis Patient agrees to participate as a study subject and signs the Informed Consent and Research Authorization documents Patient is able to read and speak English. Exclusion Criteria: Patient is under the age of 22 or over the age of 89 Patient has preoperative stiffness/contracture of the knee secondary to post-traumatic arthritis Patient is scheduled to undergo a bilateral TKA surgery Patient is unable to read and speak English