Is Your Posture Causing Your TMD? Jaw Dropping Facts About TMD Written by Seraj-Villanueva, DPT on April 5, 2016. Posted in Physical Therapy. The temporomandibular joint is probably the most used joint in the body and, as such, it takes a serious beating. Temporomandibular joint dysfunction (or TMD/TMJ) prevalence in the USA is estimated... Continue reading