I have chronicle lower back and hip numbness/pain after a motorcycle accident, any suggestions to relief the pain?

Chronic back pain: Is due to nerve overactivity and can be very challenging to treat. A variety of medications can take the edge off along with physical therapy/pain clinic treatments although unfortunately the mainstay is managing rather than curing - some do resolve spontaneously. Here is some general information - for specifics consult doctor. https://patient.info/health/nonspecific-lower-back-pain-in-adults