Letter template for patients previously treated with a viscosupplement Dear [Patient], I’d like to check in with you regarding your knee osteoarthritis. Please contact our office to schedule a follow-up appointment. Osteoarthritis is a chronic condition and it is important to continue to evaluate your pain to provide appropriate treatment options. If your pain has returned, it may be time for an injection or other treatments to continue to manage your knee pain. Please call us at xxx-xxx-xxxx to make an appointment. Sincerely, [Doctor name] SONE-00499. A 9/2010