Disc displacement without reduction (DDwoR) is a situation where the disc is permanently displaced mostly anteriorly or anteromedially to the condyle, which is resulting in a painful locking of the temporomandibular joint, which clinically is called a closed lock . Patients with DDwoR frequently exhibit unique combinations of symptoms, including a history of clicking sound followed by a sudden feeling of discomfort, restricted mouth opening, and reduced contralateral movement, mostly we can find these symptoms in an acute form of DDwoR .