Objective To analyse the condylar position through temporomandibular joint（TMJ）transcranial lateral oblique radiographs by analyzing the temporomandibular joint disorder（TMD） patients. Methods Seventy- six
patients with TMD（30 males, 46 females）were selected, aging from 17 to 53 years. TMJ transcranialateral oblique radiographs were measured and analyzed using the Cohlmia method. Results Among the 76 TMD patients, the mean value of PO1（the anteropsterior axes of condylar position） was 1.220±0.422 and that of PO2（the vertical axes of condylar position）was 0.386±0.085 on the left side, while the mean value of PO1 was 1.119±0.386 and that of PO2 was 0.397±0.098 on the right side. These condylar position and glenoid fossa difference were found to be insignificant（P>0.05）. Conclusion The difference of condylar position is not so obviously in the TMD patients, thus the significance of diagnosis is limited.
