Related Experiment Videos
[The temporomandibular joint meniscus in MRI]
A Pujol1, J M Foucart, P Carpentier
1Service de Radiologie, HIA Bégin, St Mandé.
Journal De Radiologie
|September 1, 1995
Summary
Advanced MRI techniques reveal detailed temporomandibular joint (TMJ) disc displacements beyond anterior luxation. Dynamic MRI studies precisely time these displacements, aiding therapeutic decisions for TMJ disorders.
Area of Science:
- Radiology
- Orthopedics
- Biomedical Engineering
Background:
- Continuous advancements in MRI equipment and software necessitate adaptive examination techniques.
- Understanding temporomandibular joint (TMJ) disc displacement is crucial for diagnosing and treating TMJ disorders.
Purpose of the Study:
- To detail precise meniscal displacement patterns in the TMJ using advanced MRI.
- To evaluate the utility of dynamic MRI in assessing TMJ disc disturbances and their timing.
Main Methods:
- Utilized a bilateral coil technique with 4 mm thick sagittal slices and fast spin echo sequences.
- Performed oblique coronal cuts in T1-weighted spin echo sequences in closed and half-open positions.
- Analyzed dynamic MRI data from 350 subjects during a full jaw open/close cycle.
Main Results:
- Identified meniscal displacements including medial, lateral, and rotational slips, in addition to classic anterior luxation.
- Observed that these displacements can occur in isolation or combination.
- Demonstrated the value of dynamic MRI in pinpointing the timing of disc disturbances during reduction exams.
Conclusions:
- Dynamic MRI provides detailed insights into TMJ meniscal displacement beyond anterior luxation.
- The timing of disc disturbance identified through dynamic MRI is valuable for therapeutic decision-making in TMJ disorders.