This thesis is based on following articles, which are referenced to in the text by Roman numerals:
I Yang XJ, Hong M, Hu XH. (1992) A New MRI Projection for the Temporomandibular Joint and Lateral Pterygoid Muscle. J Craniomandibular Disorders: Facial & Oral Pain. 6(1): 32-9
II Yang XJ, Pernu H, Pyhtinen J, Tiilikainen PA, Oikarinen KS, Raustia AM: (2001) MRI Findings of Lateral Pterygoid Muscle in the Patients with Symptomatic Temporomandibular Joint Hypermobility. J Craniomandibular Practice 19 (4): 260-268.
III Yang XJ, Pernu H, Pyhtinen J, Tiilikainen PA, Oikarinen KS, Raustia AM: MR Abnormalities of the Lateral Pterygoid Muscle in Patients with Nonreducing disc Displacement of the Temporomandibular Joint. J Craniomandibular Practice, in press.