After the doctor puts Sheldon's X-ray on the lightboard, it disappears a few moments later.
Sheldon asks Missy to teach him how to ride a bike. However, in the earlier episode An Entrepreneurialist and a Swat on the Bottom (2019), he is seen riding a bike to the bus station all by himself. However, he was asking Missy to teach him how to ride without training wheels. All other times he has been shown riding with training wheels.
In The Big Bang Theory (2007), someone leaves a bike in the dorm hallway. Sheldon says that he would steal it to teach them a lesson, if he knew how to ride a bike. Yet, here he is, years before, riding a bike for "11 miles that day."