Back bone is a skeletal part of the body
Yes, I sometimes get back pain. It's quite common. 
What could be the cause of back pain?
There can be many causes, but the lumbar area is most often affected, becasue it supports the weight of the upper body. 
What part of the body is the Lumber area ?
I think it's the lower part of the spine. Injury there can impact bowel function, walking, and anything to do with the lower half of the body.  
OK that good! So are there any cure or remedy to back pain/ache
Acupuncture
Acupuncture is a form of alternative medicine and a key component of traditional Chinese medicine (TCM) in which thin needles are inserted into the body. Acupuncture is a pseudoscience because the theories and practices of TCM are not based on scientific knowledge. There is a range of acupuncture variants which originated in different philosophies, and techniques vary depending on the country in which it is performed. It is most often used to attempt pain relief, though it is also recommended by acupuncturists for a wide range of other conditions. Acupuncture
lumbar area is the most common area for pain, as it supports most of the weight in the upper body. Episodes of back pain may be acute, sub-acute, or chronic depending on the duration. The pain may be characterized as a dull ache, shooting or piercing pain, or a burning sensation. Discomfort can radiate into the arms and hands as well as the legs or feet, and may include numbness, or weakness in the legs and arms.
- Beta cell – Beta cells (β cells