ROM Outcomes in Patients Undergoing a Primary TKA

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.

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