Episode 287: "Roman chair for thoracic kyphosis" A rounded upper back is also described as excessive thoracic kyphosis. The thoracic spine is an area designed for mobility, however the joints in this region tend to stiffen and become hypomobile due to lack of movement, and also general aging. Desk jobs, computers, and smartphones typically promote a rounded back position. But, it is important to note optimal osteokinematic and arthrokinematic motion at the shoulder and neck may be limited if the