Relationship between systemic joint laxity, TMJ hypertranslation, and intra-articular disorders.

The aim of this study was to evaluate the correlation between general joint hypermobility, temporomandibular joint (TMJ) hypertranslation and signs and symptoms of TMJ intra-articular disorders. One hundred twenty individuals constituted the sample, divided into two groups: Group I (symptomatic) included 60 patients with complaints of joint noises, pain, or jaw locking, and Group II (nonsymptomatic) included 60 people with no TMD complaints. The Beighton's hypermobility score addressed the systemic laxity while lateral x-rays taken in both closed and full open mouth positions measured TMJ mobility (condyle hypertranslation). No association was found between intra-articular disorders and systemic hypermobility (p > 0.05). A significant negative correlation (p < 0.05) was found between age and systemic hypermobility, while no correlation was detected between systemic and TMJ hypermobility (condyle hypertranslation).