Retrodiscal zone
Citation, DOI, disclosures and article data
Citation:
Yu Y, Knipe H, Retrodiscal zone. Reference article, Radiopaedia.org (Accessed on 08 Jan 2025) https://doi.org/10.53347/rID-5537
rID:
5537
Article created:
Disclosures:
At the time the article was created Frank Gaillard had no recorded disclosures.
View Frank Gaillard's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Yoshi Yu had no financial relationships to ineligible companies to disclose.
View Yoshi Yu's current disclosures
Revisions:
2 times, by
2 contributors -
see full revision history and disclosures
Systems:
The retrodiscal (bilaminar) zone is located between the posterior band of the TMJ disc and the posterior portion of the TMJ capsule. The 'bilaminar' refers to the two posterior attachments of the disc:
superior layer: elastic to allow anterior translation of the disc over the articular eminence
inferior layer: inelastic collagen to maintain relationship with the mandibular condyle
It also contains a small neurovascular bundle.
Related pathology
In TMJ inflammation, the retrodiscal area is a prominant site of edema.
References
- 1. Tomas X, Pomes J, Berenguer J et-al. MR imaging of temporomandibular joint dysfunction: a pictorial review. Radiographics. 26 (3): 765-81. doi:10.1148/rg.263055091 - Pubmed citation
- 2. Sommer OJ, Aigner F, Rudisch A et-al. Cross-sectional and functional imaging of the temporomandibular joint: radiology, pathology, and basic biomechanics of the jaw. Radiographics. 23 (6): e14. doi:10.1148/rg.e14 - Pubmed citation
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