Abstract :

Introduction The goal of using ultrasound-guided (USG) arthrocentesis is to reduce number of needle insertion attempts,
which is hypothesized to reduce procedure time, postoperative pain, and consequently, limitation in range of motion.
Purpose The objective of this study was to compare the therapeutic and operative efficiency of USG Single-Puncture Arthro-
centesis (SPA) Type 2 and SPA Type 2 arthrocentesis without ultrasound guidance in the treatment of temporomandibular
joint (TMJ) internal derangement (ID) “disc displacement without reduction (DDWOR).”
Materials and methods A double-blinded prospective randomized clinical trial (RCT) was conducted from December 2022
to December 2023 at Ain Shams University Hospital. It enrolled females with a mean age of 27.00
±
3.70 years with DDWOR
and failed conservative treatment, excluding those with malocclusion, parafunctional habits, systemic diseases, psychologi-
cal disorders or requiring special needs. In the study, 40 female patients with DDWOR were randomly divided into a control
group (SPA Type 2 arthrocentesis) and an intervention group (USG SPA Type 2 arthrocentesis). Patients were assessed for
needle insertion attempts

Learning objectives :

• The use of ultrasound as guidance for arthrocentesis
• Reduction of operative time
• Reduction of needle attempts