Zoology - Locomotion and Movement Question with Solution | TestHub

Bones become fragile in osteoporosis,$i.e.,$reduction in bone tissue mass causing weakness of skeletal strength. It is characterized by pain in the bone, specifically in the back and vertebral crush, usually in weight-bearing vertebrae.

Arthritis: Inflammation of joints.
Gout: Inflammation of joints due to the accumulation of uric acid crystals.