Spondylolisthesis
Spondylolisthesis is the forward or backward slippage of a bone in the spine.

Symptoms
Mild to severe pain in the lower back, buttocks, back of the thigh, calf and foot
Pain in the neck, upper back, shoulder, hands and fingers
Difficulty or increasing pain with lifting and bending
Worsening pain when resting, sitting, walking or standing
Back or neck pain that comes and goes intermittently
Morning stiffness and pain that may increase or reduce with movement
Pain radiating from the buttocks or down one or both legs (Sciatica)
Tingling, numbness, burning, weakness or imbalance in legs and feet
Pain radiating from the neck or upper back to the hands and fingers
Dizziness or vertigo with movement or change of position
Difficulty urinating or passing motion; reduced bowel and bladder control
Spinal instability depending on the grade of spondylolisthesis