Background: Posterior shoulder tightness has been proposed to contribute to or cause a myriad of shoulder conditions. The tightness of the posteroinferior capsule and the teres minor and infraspinatus muscles of the posterior cuff has been hypothesized to cause osteokinematic [e. g. https://www.lightemupsequences.com/limited-value-Icicles-No-6-Textured-Glass-Dildo-8-5in-Clear-Pink-mega-pick/