<prompt> Osteomalacia is associated with -Decreases in osteoid volumeDecrease in osteoid surfaceIncrease in osteoid maturation timeIncrease in mineral apposition rate  <response>: First, see the structural composition of the bone.Bone is made up of : -Organic matrix Protein matrix also called osteoid: - This is mainly made up of collagen and non-collagen protein.Inorganic matrix mineral : - Hydroxyapatite .Bone cells.As osteoid organic matrix does not contain mineral hydroxyapatite, it is also called unmineralized bone.Mineralization of osteoid forms the complete mineralized bone.In ricketsosteomalacia mineralization of osteoid is defective, i.e., the osteoid formation is normal, but mineralization of osteoid is defective.On the other hand, In scurvy, Collagen synthesis is defective. Collagen is the major constituent of osteoid. Thus, In scurvy osteoid formation is defective.In osteoporosis, resorption is increased from the fully formed bone. Therefore, both the organic matrix osteoid as well as non-organic minerals are decreased. 