T Sano1, P L Westesson, T A Larheim, R Takagi. 1. Department of Oral Radiology, Showa University School of Dentistry, Tokyo, Japan. tssano@senzoku.showa-u.ac.jp
Abstract
PURPOSE: This study investigated the association between temporomandibular joint pain and bone marrow alterations in the mandibular condyle seen on magnetic resonance (MR) images. PATIENTS AND METHODS: The study was based on 112 temporomandibular joints in 112 patients with disc displacement without reduction. Thirty-four patients with abnormal bone marrow on MR images were compared with a control group of 78 patients with normal bone marrow. The analysis was based on proton density and T2-weighted MR images in the oblique sagittal and coronal planes. The degree of pain was correlated to the status of the bone marrow using statistical methods. RESULTS: The degree of pain in joints with abnormal bone marrow was higher than in joints with normal bone marrow signal on MR images (P = .0045). CONCLUSION: Because the stage of internal derangement was similar in both groups, more intensive pain appears to be associated with bone marrow alterations.
PURPOSE: This study investigated the association between temporomandibular joint pain and bone marrow alterations in the mandibular condyle seen on magnetic resonance (MR) images. PATIENTS AND METHODS: The study was based on 112 temporomandibular joints in 112 patients with disc displacement without reduction. Thirty-four patients with abnormal bone marrow on MR images were compared with a control group of 78 patients with normal bone marrow. The analysis was based on proton density and T2-weighted MR images in the oblique sagittal and coronal planes. The degree of pain was correlated to the status of the bone marrow using statistical methods. RESULTS: The degree of pain in joints with abnormal bone marrow was higher than in joints with normal bone marrow signal on MR images (P = .0045). CONCLUSION: Because the stage of internal derangement was similar in both groups, more intensive pain appears to be associated with bone marrow alterations.
Authors: N Kakimoto; H Shimamoto; J Chindasombatjaroen; T Tsujimoto; S Tomita; Y Hasegawa; S Murakami; S Furukawa Journal: AJNR Am J Neuroradiol Date: 2014-04-17 Impact factor: 3.825