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Table II

Parameters used in radiological assessment based on the study by Choi et al. [11].

Parameters Landmark Purpose
Paramedian line (PL) vertical line passing through the nasal septum and the centre of the occipital foramen As reference line
Transverse line (TL) line tangentially to the posterior borders of both condyles As reference line
Condylar Distance (CD) distance between the condyle and the paramedian line To measure magnitude of medial or lateral displacement
Condylar Length (CL) the longest diameter of the condyle To measure magnitude of deformity of condylar head
Condylar Angulation (CA) the angulation between the long axis of the condyle and the transverse line To measure magnitude of rotation of condylar head
Coronal Joint Space (CS) Superior joint space (in coronal view) To measure magnitude of superior or inferior displacement
Anterior joint space (S2) Closest anterior joint space To measure magnitude of anterior or posterior displacement

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