Injecting substances that stimulate cartilage repair (chondroprotective agents) has also had a measure of success, according to some European studies.
وتذكر بعض الدراسات الاوروپية ان حقن مواد تساعد على ترميم الغضروف (‏ chondroprotective agents‏ )‏ يشهد ايضا بعض النجاح .‏