Condition
Instability
Spinal instability means a motion segment is not maintaining its normal alignment under everyday load, often because of degeneration, a slip, deformity, prior surgery, or trauma. Atlas can help explain why Dr. Iyer looks for both mechanical pain and nerve compression when deciding whether therapy alone is enough or whether stabilization should be part of treatment.
What instability means
Instability is not just looseness on an image because it describes abnormal or poorly controlled motion that can irritate joints, discs, nerves, or supporting tissues. It may develop gradually from degeneration or appear suddenly after trauma or surgery.
How it causes symptoms
Patients often report pain with position changes, standing, bending, twisting, or repeated loading because those movements stress the unstable level. If the motion narrows the canal or foramina, numbness, leg pain, or arm symptoms can be part of the picture as well.
How it is evaluated
Evaluation combines symptoms, exam findings, and imaging that may include standing X-rays or flexion-extension views to show movement at the level in question. The key is deciding whether the abnormal motion actually matches the pain pattern and functional limitation.
Treatment options
Physical therapy and core or postural support are often tried first when the instability is mild and neurologic function is preserved. Fusion or another stabilizing strategy is considered more often when the segment is clearly unstable and symptoms remain significant.
Use Atlas for the Next Step
Ask follow-up questions in plain language about symptoms, treatment pathways, and how this topic connects to your visit with Dr. Iyer.