Objective: To compare healthy and affected joints of patients with the unilateral temporomandibular disorder (TMD) via morphometric measurements of radiographic images. Material and Methods: Forty-one patients aged 16 to 56 years were included in the research. All individuals had chronic unilateral TMD and at least one of the following symptoms had to be unilaterally present in patients: joint pain, joint sound or movement limitation. In order to evaluate a total of 82 temporomandibular joints, 3 angular and 3 linear measurements on orthopantomogram (OPG) and 2 angular and 12 linear measurements on lateral temporomandibular joints image (LTI) were performed. AudaxCeph Version 5.X orthodontic software was used for morphometric measurements. The findings were compared using Student's t-test and Mann-Whitney U test. Results: No significant difference was found between the healthy side and the affected side in all parameters of both OPG and LTI assessments (p>0.05). Conclusion: In patients with unilateral TMD, the hard tissue characteristics of healthy and affected sides were similar.