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Updated: Feb 7, 2026

Knee Arthrocentesis in Adults
Published on: February 25, 2022
Arthrocentesis with different irrigation volumes in patients with disc displacement without reduction: One-year
Eduardo Grossmann1, Rodrigo Lorenzi Poluha2, Lilian Cristina Vessoni Iwaki2
1Department of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Abstract:
Objective: This study evaluated the clinical efficacy of arthrocentesis when varying the irrigation volume in patients with disc displacement without reduction (DDWOR). Methods: Thirty DDWOR patients were equally divided into two groups: G1 (50 mL) and G2 (200 mL). Information was compared for pain, the maximum interincisal distance (MID), protrusion, and right and left laterality. Results: Arthrocentesis was able to reduce the pain and increase the MID, protrusion, and both laterality values significantly one year after the procedure (p < 0.001) in both groups. However, comparisons between the groups revealed no significant difference (p > 0.05). Furthermore, changes in volume did not affect the arthrocentesis results (p = 0.626, odds ratio = 1.625; 95% confidence interval = 0.230-11.461). Conclusion: Arthrocentesis techniques using 50- and 200-mL irrigation volumes were both effective, with no significant differences between techniques observed after one year of follow-up.
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