Varies: The grade of the slip is based upon the percentage of one vertebrae slipped forward on the other. So, it is difficult to say with a number because it is based somewhat on the magnification of the X-ray. That being said, most of the time a 13 mm slip is grade II to grade III.
Answered 1/25/2016
1.7k views
5 doctors weighed in across 2 answers
4 doctors weighed in across 2 answers
5 doctors weighed in across 2 answers
6 doctors weighed in across 2 answers
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question