This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
In Bony ankylosis, there is - 
Select and explain. 
A. Painless, No movement, B. Painful complete movement, C. Painless complete movement, D. Painful incomplete movement
A: Painless, No movement
Answer: A: Painless, No movement 
Explanation: Ankylosis

Ankylosis is the fusion of bones in a joint leading to stiffness of the joint.
Ankylosis may be : -

1) Fibrous ankylosis: - Two articular surfaces are fused by fibrous tissue.
The feature are : -

Some movement of joint is possible (though just a jog of movement).


Movements may be painless or painful.
Most common cause is tubercular arthritis.


2) Bony ankylosis : - There is a bony union between two articular surfaces. The features are : -

No movements possible.
a Joint is painless
A most common cause is acute suppurative arthritis (septic arthritis).
Sometimes, stiffness may also occur due to extra-articular etiology such as in Bum contracture, myositis ossificans etc. It is called False ankylosis.