Aside from known injuries to your lower back, you may often sit for long periods in uncomfortable seats. You are often subject to vibration and jarring on uneven ground.
Shoulder and elbow pain can be brought on through a specific injury such as pulling a load or getting an unexpected jolt. You perform repetitive actions such as pulling on a bar to get in and out of a vehicle as well as using tools and controls repetitively.
You may sit in cramped positions, climb in and out of vehicles and jump to the ground. Knee problems can be caused by traumatic incidents, but knee and foot pain are often made worse by: sitting still for too long; climbing stairs or ladders; or walking or standing in incorrect footwear.