Hard to say: A " water bag" is not a term typically used to describe any anatomist structure in the spine. You may be describing a facet cyst, which can become fluid filled and compress a nerve. If it has progressed to the point if causing numbness in the leg, surgical resection is usually required.
Answered 4/2/2015
3k views
12 doctors weighed in across 3 answers
3 doctors weighed in across 2 answers
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question