Yes wearing boots and spending a significant amount of time sitting for work does come into play.
Many times boots have a raised heel.
Wearing a raised heel will systematically shorten your heel cord.
Your heel is meant to be flat on the ground.
this your heel cord shortens and you start to lose dorsiflexion, and
the problem is solved mechanically by turning the foot out.
With the heel raised the entire system is impacted.
Knee bends and over extension occurs to compensate for the entire system being forward.
The weight of your boots comes into play for every 500 grams on your feet =10lbs on your back.
Here are a couple episodes that hit different aspects of sitting
Why Sitting Wrecks Your Mad Hip Action
If you wear body armor while sitting
Pro Episode # 47 – Pro user Request Friday: Wear a gun and body armor? And sit? Save your spine.
Episode 276: MobilityWod Google Talk: Desk Bound
Episode 274: The Standing Athlete
Episode 272: TJ Murphy Edition and Hamstring Stiffness
Episode 251: High Skilled Sitting/Abdominal Bracing