This session will describe the missing link in correctly detecting contributions from the cervicothoracic spine and shoulder regions in patients with upper extremity disorders. Once properly identified, these interventions can be directed toward relevant impairments, thereby achieving optimal outcomes. Through the use of patient case examples from professional and collegiate athletics and members of the US military, this exciting and interactive session will provide physical therapists with key rehabilitation concepts of the cervicothoracic spine and shoulder regions for patients with upper extremity disorders.