The absence of the Achilles tendon reflex and motor weakness in determining the level of disc protrusion.
D000125:Achilles Tendon; D006801:Humans; D007405:Intervertebral Disc Displacement / Q000150:complications* / Q000175:diagnosis; D010243:Paralysis / Q000209:etiology*; D012026:Reflex, Stretch; D014034:Toes