Based on the available information, there is no direct correlation found between Lipitor use and joint flexibility. Lipitor, also known as atorvastatin, is a medication used to treat high cholesterol and prevent heart disease [1]. It works by reducing the amount of cholesterol produced by the body [1].

Joint flexibility, on the other hand, is primarily affected by factors such as age, injury, and certain health conditions like arthritis [2]. There is no scientific evidence suggesting that Lipitor directly impacts joint flexibility.

However, it is important to note that statins like Lipitor can have side effects, including muscle pain and weakness [3]. While this does not directly affect joint flexibility, it could potentially impact a person's perception of joint flexibility if they are experiencing muscle-related side effects.

In conclusion, based on the available information, Lipitor use does not directly affect joint flexibility. Joint flexibility is primarily influenced by factors such as age, injury, and certain health conditions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/diabetes/in-depth/diabetes/art-20049314
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2949584/