Preliminary clinical evaluation of lateral pterygoid muscle preservation in total temporomandibular joint reconstruction with stock prosthesis

doi:10.19438/j.cjoms.2022.06.005

Abstract

Abstract: PURPOSE: To investigate the clinical effect of retaining lateral pterygoid muscle (LPM) during standard temporomandibular joint（TMJ） prosthesis replacement. METHODS: A new method that LPM was kept attached to the pterygoid muscle fossa through proper condyle osteotomy was tried to preserve LPM during total joint reconstruction (TJR). Compared with the conventional operation, the feasibility and effectiveness of the new method for muscle preservation and reconstruction were verified. SPSS 25.0 software package was used for data analysis. RESULTS: Twelve patients with a total of 14 joints undergoing TJR with LPM preservation were included in this retrospective study. Lateral movement of all 7 joints in LPM(+) group that preserved LPM were restored post-operation, with an average 3.14 mm of lateral moving distance, much higher than that in LPM(-) group (0.29 mm, P<0.01). In addition, bone healed well and LPM located stably. CONCLUSIONS: LPM preservation is essential for function regain of mandible lateral movement post TJR operation and this new method can be utilized to preserve LPM.

Key words: Lateral pterygoid muscle preservation, Total joint reconstruction, Temporomandibular joint

CLC Number:

R782.6

YUE Shi-jing, ZHAO Jiong, BAI Guo, CHEN Min-jie, YANG Chi. Preliminary clinical evaluation of lateral pterygoid muscle preservation in total temporomandibular joint reconstruction with stock prosthesis[J]. China Journal of Oral and Maxillofacial Surgery, 2022, 20(6): 548-553.

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