Scrum and Appraisals

Most organizations depend heavily on the concept of "Appraisals" to give promotions to their employees. It might make some members of the team more competitive to score over another team members. It could be detrimental to the overall team structure. I'm not sure how Scrum and the current concept Appraisals will fit together unless the company comes up with some "scrum-compatible appraisal system", if there exists anything like that!