Hi, Thanks for your query. In fact after healing, pain should not be there . only possibility is- - weak bones ( osteoporosis ) pulled forcibly while doing sit upsto make the fracture site sore. - There might be some spinal injury at the accident.. which is showing it s symptoms with vertebral weakness/ disc problems..& this causes a sort of muscle pull causing pain at the site of fracture, * Solution would be after consultation of an orthopedic/ getting X ray done / blood counts for serum calcium & vitamin D.. . This will be followed by specific treatment with nutritional supplements/ pain medicine/ physiotherapy as per the cause. Thanks.