EE was tying down & securing the train. As the EE was ready to dismount, the EE faced the ladder and placed right foot to pivot. The soles on EE's new boots gripped the catwalk not allowing the foot to pivot. Later EE felt soreness in knee. The EE was released to full duty on 10/1/18. On 11/19/18 an MRI determined a torn meniscus and EE was released to restricted duty.