Table 2. Recommendations by professional societies.

Treatment method	American Academy of Orthopaedic Surgeons (AAOS 2021) (e5)	Osteoarthritis Research Society International (OARSI 2019) (4)	American College of Rheumatology/Arthritis (ACR 2019) (6)	European Society for Clinical and Economic Aspects of Osteoporosis, Osteoarhritis and Musculosceletal Diseases (ESCEO 2019) (5)	AWMF Guideline knee osteoarthritis/osteoarthritis of the hip (2018/2019) (1, 2)
Glucocorticoids	Moderate recommendation (++) (++)	Moderate recommendation (++) (++)	Strong recommendation (+++) (+++)	Limited recommendation (+)	Moderate recommendation (++) (++)
Hyaluronic acid	Moderate recommendation (++) (++)	Moderate recommendation (++) (++)	No recommendation (-) (−)	Limited recommendation (+)	Moderate recommendation (++) (++)
PRP	Limited recommendation (+)	No recommendation (−)	No recommendation (-) (−)	No details	No details for current evidence level

PRP, platelet rich plasma