There are multiple definitions:

1. patellofemoraal pijn syndroom(Dutch)

   • RPCP
   • Pain, Musculoskeletal system
   • https://www.umc…al-pijnsyndroom
   • https://www.thu…al-pijnsyndroom

2. patellofemoral pain syndrome(English)

   • a common cause of anterior knee pain, and successfully treated in over 2/3 of patients through rehabilitation protocols designed to reduce pain and return function to the individual
   • PFP, VMO
   • Shoulder and other joints, Pain, Rehabilitation
   • https://doi.org…6/1476-5918-7-9
   • https://doi.org…2891-015-0736-6