The cause of pain in the back and thigh , could be lumbar spine stenosis . The knots that you feel could be contracted muscle fibers due to lack of calcium and improper nerve conduction . Please go for an MRI spine ,EMG and nerve conduction studies . Please consult a neurologist for the diagnosis and treatment . Hope this helps you . Take care and regards !
Thank you for your response. This web site is a great tool for people to use to gain some insight as to what may be wrong and what things to speak to their doctors about. Thank you again.