 [ Symptoms ] i have osteoarthritis my hips literally lock and i can not get up [ Disease ] from your story in my opinion you have either increased the severity of the arthritis in your back or due to the increased weight you may have developed lumbar disc bulge or protrusion this need s to be confirmed by a new mri physiotherapy is the treatment of choice for your case bursitis is not to cause all of the pain it is aside the inflammation of the area but not the main cause of pain