West China Journal of Stomatology ›› 2021, Vol. 39 ›› Issue (2): 209-214.doi: 10.7518/hxkq.2021.02.013

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Clinical analysis of arthroscopy used in the diagnosis and treatment of synovial chondromatosis of the temporomandibular joint

Qiao Yongming(), Wang Ying, Li Rui   

  1. Dept. of Oral and Maxilloficial Surgery, the Stomatology Center of the First Affiliated Hospital of Zhengzhou University, Henan Provincial Key Laboratory of Oral Health Management and Cancer Prevention Medicine, Zhengzhou 450052, China
  • Received:2020-08-22 Revised:2020-12-14 Online:2021-04-01 Published:2021-04-09
  • Contact: Qiao Yongming E-mail:hnymqiao@aliyun.com
  • Supported by:
    Key Scientific Research Projects of Colleges and Universities of Henan Province(17A320054)

Abstract: Objective

To evaluate the value of arthroscopy in the diagnosis and treatment of synovial chondromatosis of the temporomandibular joint (TMJSC).


The cases of 16 patients preliminarily diagnosed with TMJSC by magnetic resonance imaging (MRI) from July 2011 to December 2018 were analyzed retrospectively. If the diagnosis was confirmed by arthroscopy, the opening operation was performed. The preoperative MRI, arthroscopy and opening operation, postoperative pathology and postoperative MRI of confirmed cases were analyzed, and clinical follow-up was performed to evaluate the curative effect of open surgery. The degree of mouth opening and visual analogue scale (VAS) scores for pain pre-operation and during follow-up of the confirmed cases were analyzed by t-test.


Fourteen cases of TMJSC were diagnosed by arthroscopy, consistent with the postoperative pathological diagnosis. Postoperative MRI examination showed that articular cavity lesions basically disappeared. Ten patients with synovial chondromatosis were followed-up (follow-up rate, 71.4%) from 6 months to 7 years and 8 months (average follow-up time, 17.6 months); no recurrence was found, and clinical symptoms improved by varying degrees. Before operation and at follow-up, t-test results of opening degree difference were t=7.757, P<0.05; t-test results of VAS were t=-3.274, P<0.05.


Arthroscopy is essential in the diagnosis and treatment of TMJ synovial chondromatosis.

Key words: temporomandibular joint, synovial chondromatosis, arthroscopy, opening surgery

CLC Number: