How To Aspirate or Inject a Prepatellar Bursa By Alexandra Villa-Forte, MD, MPH, Cleveland Clinic Reviewed / Revised Apr 2023 View Patient Education Indications Contraindications Complications Equipment Additional Considerations Relevant Anatomy Positioning Step-by-Step Description of Procedure Aftercare Warnings and Common Errors Tips and Tricks Reference Aspiration of the prepatellar bursa is done for diagnostic purposes (eg, particularly to exclude septic bursitis).