At times,the ligaments are overstretched or torn. This condition is called:

Given below are two statements: one is labelled as Assertion $(A)$ and the other is labelled as Reason $(R)$.
Assertion $(A)$:
Osteoporosis is characterised by decreased bone mass and increased chances of fractures.
Reason $(R)$:
Common cause of osteoporosis is increased levels of estrogen.
In the light of the above statements,choose the most appropriate answer from the options given below:

$A$: Inflammation of a skeletal joint may immobilize the movements of the joint.
$R$: Uric acid crystals in the joint cavity and ossification of articular cartilage lead to this.

Choose the correct sentence for osteoporosis.

Hernia is a condition characterized by:

Osteoporosis,an age-related disorder of the skeletal system,is characterized by: