Explain what joints and muscle movement are involved in working at a computer and how they are involved?

Explain what joints and muscle movement are involved in working at a computer and how they are involved?
Answer:
At office when we work in front of computer our some joints are involved like
Metacrpo-Phlangeal Joints
Elbow Joint
Wrist Joints
Interphalemgeal Joints
And in Muscles we use Extensors of formarm
And our neck and shoulders are also involved while working our figures works continuously
while typing on computer .Our wrist, elbow, arms and muscles are...