f g h t w w ysis and lavage of the upper joint space is a safe and effecive way of managing disorders of the temporomandibular oint (TMJ), and some studies have attempted to find ways f making arthrocentesis comfortable.1 Identification of the pper joint space is important for successful lysis and lavage, o reference points have been laid down.2 However, use of he “blind” technique to reach the upper joint space requires xperience, and carries a risk of damage to the collateral ligments of the disc and the adjacent soft tissue. In addition, xtra-articular or intra-articular injections affect the success f treatments such as prolotherapy, injection of autologous lood, and arthrocentesis. Although magnetic resonance imaging (MRI) is the gold tandard for clinical diagnostic criteria for disorders of the MJ, ultrasound (US) is also effective.3 In addition, USuided lysis and lavage of the TMJ may permit real-time ynamic arthrocentesis, which we describe here.