Spondy’sOnline version Lots of spondys by Jacqueline Nichols 1 . 2 , 3 1 4 Group 4 Weakening of joints allows anterior slippage of a vertebrae on top of another Typically affect L4-L5 Degenerative Spondylolisthesis Slippage of one vertebrae upon another due to a nueral tube abnormality Symptoms typically appear during growth spurts Congenital Spondylolisthesis Spinal arthritis that spurs newbone growth between discs May cause the spine to become fused Ankylosing Spondylitis Spondylosis Also known as spinal osteoartritis Develops bone spurs between joints