Background:  internal derangement of the temporomandibular joint is characterized as a disorder within the joint, in which there is a displacement of the disc from its usual anatomical position between the mandibular condyle and the articular eminence. Internal derangement often progresses from a stage of clicking with normal maximal mouth opening through one where clicking gradually ceases with varying degrees of restriction in mouth opening to a stage of closed lock. TMJ arthroscopy is a valuable diagnostic and therapeutic tool for various intraarticular diseases; this technique is especially useful for the treatment of disc displacement, avoiding the complex previous surgical procedures. Purpose: This study is to compare arthroscopic assisted release of lateral pterygoid muscle to retrodiscal scarification in the treatment of internal derangement of temporomandibular joint.Results: all clinical parameters regarding jaw opening, lateral excursion, and joint pain were improved and all patients reestablished normal position of the anteriorly displaced disc confirmed by postoperative MRI.
 

Dr. Ahmed Ellatif is working as a Lecturer of Oral and Maxillofacial Surgery, in Tanta University. As a faculty member in Oral and Maxillofacial Surgery Department, he worked and experienced in  Making and presenting many seminars in different Oral and Maxillofacial Surgery topics in the Department of Oral and Maxillofacial Surgery.