This position calls for standing for long periods and lifting up to 35 pounds. Are you able to fulfill those requirements?

Typically, when there are physical requirements for the job, they will be listed on the job announcement. If you applied to the position, you most likely could fulfill those requirements. Working as an orthopedic technician calls for standing for long periods and lifting objects. Describe if you can fulfill those requirements, and if not, explain why. However, if you cannot fulfill the company's physical requirements, you most likely will be passed over.