Which condition involves weak and brittle bones?

Osteoporosis is characterized by weak and brittle bones due to a reduction in bone density and mass. This condition occurs when the body loses too much bone, makes too little bone, or both, leading to an increased risk of fractures even with minor falls or injuries. The development of osteoporosis can be influenced by several factors, including aging, hormonal changes, nutritional deficiencies (such as a lack of calcium and vitamin D), and certain medical conditions or medications.

Maintaining strong bones is essential for overall skeletal health, and osteoporosis highlights the importance of preventive measures such as weight-bearing exercises, adequate nutrition, and, if necessary, medication to strengthen bones. The other conditions listed do not primarily involve the weakening of bones in the same way osteoporosis does. For instance, osteomyelitis is an infection in the bone, osteopenia refers to lower than normal bone density, which is a precursor to osteoporosis but not as severe, and rheumatoid arthritis is a chronic inflammatory disorder that primarily affects joints rather than bone density itself.