Sixty patients will be identified in the clinic with rotator cuff tendonitis or a low-grade partial-thickness tear of the rotator cuff that are either insulin-dependent or insulin-independent diabetics. Patients will be informed about the current prospective study and written consent will be obtained. Patient information about kidney function, current diabetic medication type, dose and frequency will be obtained in clinic. If there is a diagnosed kidney function abnormality, the patient will be excluded from the study. Patients will be asked about their most recent HbA1C. If HbA1C has not been checked within the past 3 months, the patient will have HbA1C checked in the lab either same day as the injection or the following day. Patients will be randomized into two patient groups: Toradol (Ketorolac) injection group (n=30) and or Steroid injection group (n=30). The randomization will be done using an online randomization tool: http://www.graphpad.com/quickcalcs/index.cfm.