I have a history of back pain with occasional numbness down my right leg. I’m managing it with exercise, walking, strength training, weight loss, and topical NSAIDs for pain. I do everything in a balanced manner, so why is my right leg weaker than my left?

Disclaimer: Please note, this reply is for informational purposes only. It’s not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician, physical therapist, or other qualified health provider with a medical condition.

Things to Know

  • Nerve compression can weaken one leg.
  • Strength differences may come from leg dominance.
  • Core exercises support spine and nerve health.

Thank you for your question. While we can’t provide a diagnosis without an exam, the symptoms you describe may indicate nerve compression in your lower back, which could be affecting strength and sensation in your right leg.

The nerves in your lower back control sensation and muscle activation in your legs. If a nerve root is compressed, it can lead to weakness and numbness in the affected limb. Other factors, such as leg dominance or past movement patterns, may also contribute to strength differences.

We recommend scheduling an evaluation with a doctor or physical therapist. A neurological exam can help determine whether your weakness is due to nerve involvement or another cause. In the meantime, strengthening your core can support spinal stability and nerve function. Try these exercises:

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