15. Skou u. Roos (2017) Good Life with osteoArthritis in Denmark (GLA: D™): evidence-based education and supervised neuromuscular exercise delivered by certified physiotherapists nationwide. BMC Musculoskeletal Disorders Volume 18, Article number: 72.

16. Iqbal SM et al. (2016) Lubricin/proteoglycan 4 binds to and regulates the activity of toll-like receptors in vitro. Sci Rep. 6:18910.

17. Kosinska MK et al. (2015) Articular joint lubricants during osteoarthritis and rheumatoid arthritis display altered levels and molecular species. PLoS One; 10(5): e0125192

18. Bannuru RR et al. (2016) Comparative safety profile of hyaluronic acid products for knee osteoarthritis: a systematic review and network meta-analysis. Osteoarthritis Cartilage 2016 Dec; 24(12): 2022–2041.

19. Debbi EM et al. (2011) Efficacy of methylsulfonylmethane supplementation on osteoarthritis of the knee: a randomized controlled study. BMC Complement Altern Med. Jun 27; 11:50.

20. Benito-Ruiz P et al. (2009): A randomized controlled trial on the efficacy and safety of a food ingredient, collagen hydrolysate, for improving joint comfort. Int J Food Sci Nutr. 60 Suppl 2: 99–113.

21. Manoy P et al. (2017) Vitamin D Supplementation Improves Quality of Life and Physical Performance in Osteoarthritis Patients. Nutrients. Jul 26; 9(8). pii: E799.

22. Gao XR et al. (2017) The effect of vitamin D supplementation on knee osteoarthritis: A meta-analysis of randomized controlled trials. Int J Surg Oct; 46: 14–20.

23. Gruenwald J et al. (2009) Effect of glucosamine sulfate with or without omega-3 fatty acids in patients with osteoarthritis. Adv Ther. Sep; 26(9): 858–71.

24. Guilak F et al. (2014) Dietary fatty acid content regulates wound repair and the pathogenesis of osteoarthritis following joint injury. Ann Rheum Dis. 2015 Nov; 74(11): 2076–2083. Published online 2014 Jul 10.

25. Rein E et al. (2004). A herbal remedy made from a subspecies of rose-hip Rosa canina, reduces symptoms of knee and hip osteoarthritis. Osteoarthritis Cartilage 12 (Suppl. 2): 80.

26.  Warholm O et al. (2003). The Effects of a Standardized Herbal Remedy Made from a Subtype of Rosa canina in Patients with Osteoarthritis: A Double-Blind, Randomized, Placebo-Controlled Clinical Trial. Curr Ther Res Clin Exp. Jan; 64(1): 21–31.

27. Cisár P et al. (2008) Effect of pine bark extract (Pycnogenol) on symptoms of knee osteoarthritis. Phytother Res. Aug; 22(8): 1087–92.

28. Belcaro G et al. (2008) Treatment of osteoarthritis with Pycnogenol. The SVOS (San Valentino Osteo-arthrosis Study). Evaluation of signs, symptoms, physical performance and vascular aspects. Phytother Res. Apr; 22(4): 518–23.

29. Jamison RN et al. (1995) Weather changes and pain: perceived influence of local climate on pain complaint in chronic pain patients. Pain May; 61(2): 309–15.

30. Otto-Lambertz C et al. (2017) Periprothetische Infektionen beim Gelenkersatz. Deutsches Ärzteblatt; 114: 374–353.

31. Trampuz A. et al. (2015) Management periprothetischer Infektionen des Kniegelenks. Der Orthopäde, Springer-Verlag Heidelberg.

32.  Wollmerstedt N et al. (2006) Aktivitätsmessung von Patienten mit Hüfttotalendoprothesen. Der Orthopäde Volume 35, Issue 12, 1237–1245.

33. Zeggini E et al. (2019) Identification of new therapeutic targets for osteoarthritis through genome-wide analyses of UK Biobank data. Nature Genetics Volume 51, 230–236.

34. Thaller PH et. al. (2018) O-Beine und intensives Fußballtraining im Wachstumsalter Systematisches Review und Metaanalyse. Deutsches Ärzteblatt; 115: 401–408.

35. De Cock L et al. (2018) Knee alignment in adolescents is correlated with participation in weight-bearing sports. International Orthopaedics; Volume 42, Issue 12, 2851–2858.

36. Englund M et al. (2009) Meniscal tear in knees without surgery and the development of radiographic osteoarthritis among middle-aged and elderly persons: The Multicenter Osteoarthritis Study. Arthritis Rheum 60: 831–9.

37. Badlani JT et al. (2013) The effects of meniscus injury on the development of knee osteoarthritis: data from the osteoarthritis initiative. Am J Sports Med 41(6): 1238–1244.

38. Ludwig, O. (2008): Aktuelle Ergebnisse der Kid-Check-Studie – Haltungs– und Motorikuntersuchungen an Kindern und Jugendlichen, www.kidcheck.de.

39. Dunlop D. (2014) Relation of physical activity time to incident disability in community dwelling adults with or at risk of knee arthritis: prospective cohort study. BMJ 2014; 348.

40. Anandacoomarasamy A. et al. (2009) Obesity and the musculoskeletal system. Curr Opin Rheumatol. Jan; 21(1): 71–77.

41. Bing Lu et al. (2014) Milk Consumption and Progression of Medial Tibiofemoral Knee Osteoarthritis: Data From the Osteoarthritis Initiative. Arthritis Care Res (Hoboken) Jun; 66(6); 802–809.