Risser Model for Predicting the Prognosis of Adolescent Idiopathic Scoliosis (AIS) at Skeletal Maturity | University of Iowa Health Care Stead Family Children's Hospital

Risser Model (Simplified)

Estimates the probability of a poor prognosis (Cobb angle progression ≥45° prior to skeletal maturity) without treatment.

Age at initial visit in years (9-16)

Sex

Maximum Cobb Angle

Risser Grade

I understand that the information I receive here is not meant to replace my own physician's advice, and agree to the disclaimer.

I understand that the information I receive here is not meant to replace my own physician's advice, and agree to the disclaimer.

Risser Model (Complete)

Note: We have received reports that there are occasional issues with this form on Firefox or Chrome. If you are experiencing issues with this calculator, please try an alternative web browser. We will continue to try and address the issue shortly.

Estimates the probability of a poor prognosis (Cobb angle progression ≥45° prior to skeletal maturity) without treatment and with 6, 12 or 18 hours of brace wear per day.

Age at initial visit in years (9-16)

Sex

Maximum Cobb Angle

Risser Grade

I understand that the information I receive here is not meant to replace my own physician's advice, and agree to the disclaimer.

I understand that the information I receive here is not meant to replace my own physician's advice, and agree to the disclaimer.