Hi, Thanks for your query. Disc spaces loss means that the normal space between two vertebra has decreased markedly. Disc spaces are the normal space between two vertebra which is occupied by the disc, a mucous and cartilaginous part between two vertebra. It is not visible on x-ray and can be seem on CT scan and MRI. These discs act as shock absorbers for human body and provide enhanced flexibility and movements. Osteophyte formation is a process in which vertebral bodies undergo changes in normal aging and on the upper and lower margin of the vertebral body there are formation of the bony spikes like processes on x-ray but in reality there is change in shape of vertebra all around. There are ligaments around the discs to support them and keep these discs at proper place. Whenever there is rupture of these ligaments, the muscles around under into spasm in order to restrict the movement to avoid the pain. This pain is the result of compression of nerves roots coming out from both sides of these inter vertebral spaces. This gives rise to a more upright or straight back, referred in medical language as loss of lumbar curvature or Lordosis. Lumbar lordosis is a sign of muscles spasm and is usually seen in old age but can be seen in any age. The muscle relaxing medicines are helpful in relieving the spam and we have find out the reason of the so called lordosis; it is not a norm at all. I hope this will help you. Your further queries are welcome. Dr. Azeem Ullah, MBBS, MCPS, MRCGP