Hi, thanks for the brief history of your husband injury. Since he had met an accident. It will be recommended you get him checked once at least. It is only a safer side. There is no harm getting checked. Also to mention since you said he had torn ligament i am not able to understand what location it is torn. Also for back pain you can initially take hot water fermentation and muscle spasm can come down. Incase if the pain is not coming down you should take an X-ray or an MRI which can help if he has not injured his spine. Also for suspected torn ligament, you can get assessed by ortho and undergo an MRI or X-ray to confirm the same. Post any accident it is better to get checked once, because one can really not expect what injury can be caused. Any injury during the accident should not be taken lightly, before it becomes big one should act. There is a saying that - prevention is better than cure. I hope you will understand this small thing. With the grace of god i wish your husband a good health. Regards Jay Indravadan Patel