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The discomallear ligament and the anterior ligament of malleus: an anatomic study in human adults and fetuses

 H J Kim  ;  H S Jung  ;  H H Kwak  ;  K S Shim  ;  K S Hu  ;  H D Park  ;  H W Park  ;  I H Chung 
 SURGICAL AND RADIOLOGIC ANATOMY, Vol.26(1) : 39-45, 2004-02 
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Issue Date
Adult ; Aged ; Cadaver ; Cartilage, Articular / anatomy & histology ; Dissection ; Female ; Fetus ; Humans ; Ligaments, Articular / physiology* ; Male ; Malleus / anatomy & histology* ; Malleus / embryology* ; Middle Aged ; Morphogenesis ; Temporomandibular Joint / anatomy & histology
According to some reports, movement of the malleus, resulting from anterior hypertension on the discomallear ligament (DML), could produce aural symptoms related with damage to middle ear structures. The aim of this study was to examine the topographic relationship of the DML and the anterior ligament of malleus (ALM). Four fetuses and 16 adult hemi-sectioned heads were used to determine the anatomic-clinical relevance of DML and ALM in temporomandibular disorder. In fetal specimens, the DML was distinctly interposed between the malleus and the disc of the temporomandibular joint (TMJ), and the ALM had a structure apparently composed of the superior and inferior lamellae, running anteriorly in continuation with the sphenomandibular ligament (SML) through the future petrotympanic fissure (PTF). In all adult specimens, the DML was inserted into the malleus, and it expanded broadly toward the disc and capsular region of the TMJ in a triangular shape and inserted into the disc and capsule of the TMJ. The two-lamellae structure of the ALM was not distinguishable in adult specimens. The overstretched ALM resulted in movement of the malleus in five cases, but similar tension applied to the DML did not cause any movement of the malleus. This result provides an indication of the clinical significance of the ALM, a ligamentous structure continuous with the SML. It is apparent that the ALM has the potential to cause aural symptoms as a result of damage to the middle ear structure.
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2. College of Dentistry (치과대학) > Dept. of Oral Biology (구강생물학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Anatomy (해부학교실) > 1. Journal Papers
Yonsei Authors
Kim, Hee Jin(김희진) ORCID logo https://orcid.org/0000-0002-1139-6261
Park, Hyoung Woo(박형우) ORCID logo https://orcid.org/0000-0002-5341-9249
Jung, Han Sung(정한성) ORCID logo https://orcid.org/0000-0003-2795-531X
Hu, Kyung Seok(허경석) ORCID logo https://orcid.org/0000-0002-9048-3805
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