Display Settings:

Format

Send to:

Choose Destination
We are sorry, but NCBI web applications do not support your browser and may not function properly. More information
J Oral Maxillofac Surg. 1993 Jul;51(7):772-8; discussion 778-9.

The embryologic development of the human lateral pterygoid muscle and its relationships with the temporomandibular joint disc and Meckel's cartilage.

Author information

  • 1Department of Oral and Maxillofacial Surgery, John Radcliffe Hospital, Headington, Oxford, United Kingdom.

Abstract

The morphology of the developing lateral pterygoid muscle and its relationships with the temporomandibular joint disc and Meckel's cartilage were studied in 16 human embryos and fetuses ranging in age from 5 weeks to 14 weeks. All the temporomandibular joint structures and the lateral pterygoid muscle assumed their adult shapes by the 14th week of fetal life. At this stage, the lateral pterygoid muscle is a complex structure with several aponeuroses dividing the muscle into three main parts: superior, inferomedial, and inferoanterior. The superior part is attached to the disc superiorly and medially. The inferomedial part inserts into the anteromedial aspect of the condyle and disc. The inferoanterior portion is attached to the anterior aspect of the condyle. Anteriorly, the buccal nerve and associating blood vessels traverse the muscle in a mediolateral direction, dividing it into superior (small) and inferior (large) compartments. Posteriorly, the muscle remains intact with no separation. The lateral pterygoid muscle fibers show no direct attachment to Meckel's cartilage at any stage of development.

PMID:
8509918
[PubMed - indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Write to the Help Desk