Question

In old age, Stiffness of joints is due to the
A. Hardening of bones
B. Inefficiency of muscles
C. Decrease in synovial fluid
D. Enlargement of bones

Answer 1

Hint: Aging brings aches and pains. In old age the ligaments and tendons that hold the joints together become “stiff and leathery,” . At the same time, osteoarthritis can cause the cartilage in a joint to wear away.

Complete answer:
Many people experience joint stiffness usually they feel it after sitting for prolonged periods or after first wakingup. Some people experience a mild difficulty that goes away after moving again. Others find that the stiffness lasts longer and is more uncomfortable.
In more worse situations, stiff joints may impact a person’s mobility. People may have difficulty putting weight on their joint or have some problems standing or during walking.
Old age stiffness is a normal sign of aging. Due to aging, the joint movement gets stiffer and also less flexible.
It is mainly because the lubricating fluid levels inside the joints start to decrease, while cartilage also starts to dry out and become stiffer and thinner.
Synovial fluid is produced by the synovial membrane that lubricates the joint.The stiffness of the synovial membrane with aging renders it less able to produce the synovial fluid and thereby, causes stiffness of joints.
It is also caused by inflammation usually, occurs or is worse immediately after awakening or may be after prolonged resting or immobility. Stiffness is common with arthritis.

So, the correct answer is 'Decrease in synovial fluid' Option C.

Note:
Poor circulation In the legs will affect the leg and feet to walk properly. Muscles that are not being used will cause immobility. Old age stiffness is a reality, but if we start forming good habits like exercise, the stiffness for free motion can be prevented or be reduced.