Mrs. Tora Mi Rotator is a 50 year-old cashier at Publix with…

Mrs. Tora Mi Rotator is a 50 year-old cashier at Publix with a diagnosis of shoulder impingement syndrome.  The diagnosis was made 5 days ago as she noted pain while scanning items at her register.  She has weakness in (L) shoulder flex, ER, abd, and weak scapular stabilizing muscles; painful external rotation with the (L) arm. Research indicates the major cause of balance deficits in the geriatric population is linked to: