Vina ER, Kwoh CK. Epidemiology of osteoarthritis: literature update. Curr Opin Rheumatol. 2018;30(2):160–7.

Article  PubMed  PubMed Central  Google Scholar 

Postler A, Ramos AL, Goronzy J, Günther KP, Lange T, Schmitt J, et al. Prevalence and treatment of hip and knee osteoarthritis in people aged 60 years or older in Germany: an analysis based on health insurance claims data. Clin Interv Aging. 2018;13:2339–49.

Article  CAS  PubMed  PubMed Central  Google Scholar 

Mahir L, Belhaj K, Zahi S, Azanmasso H, Lmidmani F, El Fatimi A. Impact of knee osteoarthritis on the quality of life. Ann Phys Rehabil Med. 2016;59:e159.

Article  Google Scholar 

Swain S, Sarmanova A, Mallen C, Kuo CF, Coupland C, Doherty M, et al. Trends in incidence and prevalence of osteoarthritis in the United Kingdom: findings from the Clinical Practice Research Datalink (CPRD). Osteoarthritis Cartilage. 2020;28(6):792–801.

Article  CAS  PubMed  Google Scholar 

Wallace IJ, Worthington S, Felson DT, Jurmain RD, Wren KT, Maijanen H, et al. Knee osteoarthritis has doubled in prevalence since the mid-20th century. Proc Natl Acad Sci USA. 2017;114(35):9332–6.

Article  CAS  PubMed  PubMed Central  Google Scholar 

Heidari B. Knee osteoarthritis prevalence, risk factors, pathogenesis and features: Part I. Caspian J Intern Med. 2011;2(2):205–12.

PubMed  PubMed Central  Google Scholar 

Bannuru RR, Osani MC, Vaysbrot EE, Arden NK, Bennell K, Bierma-Zeinstra SMA, et al. OARSI guidelines for the non-surgical management of knee, hip, and polyarticular osteoarthritis. Osteoarthritis Cartilage. 2019;27(11):1578–89.

Article  CAS  PubMed  Google Scholar 

Stöve J, Steubesand N. AWMF- S2k-Leitlinie Gonarthrose. 2018.

van Doormaal MCM, Meerhoff GA, Vliet Vlieland TPM, Peter WF. A clinical practice guideline for physical therapy in patients with hip or knee osteoarthritis. Musculoskelet Care. 2020;18(4):575–95.

Article  Google Scholar 

Smink AJ, van den Ende CH, Vliet Vlieland TP, Swierstra BA, Kortland JH, Bijlsma JW, et al. “Beating osteoARThritis”: development of a stepped care strategy to optimize utilization and timing of non-surgical treatment modalities for patients with hip or knee osteoarthritis. Clin Rheumatol. 2011;30(12):1623–9.

Article  PubMed  Google Scholar 

Hagen KB, Smedslund G, Osteras N, Jamtvedt G. Quality of community-based osteoarthritis care: a systematic review and meta-analysis. Arthritis Care Res. 2016;68(10):1443–52.

Article  Google Scholar 

Jacobs H, Callhoff J, Albrecht K, Postler A, Saam J, Lange T, et al. Use of physiotherapy in patients with osteoarthritis in Germany- an analysis of a linkage of claims and survey data (from the PROCLAIR project). Arthritis Care Res. 2020;73(7):1013-22.

Li LC, Cott C, Jones CA, Badley EM, Davis AM. Improving primary health care in chronic musculoskeletal conditions through digital media: the PEOPLE meeting. JMIR Res Protoc. 2013;2(1):e13.

Article  PubMed  PubMed Central  Google Scholar 

Cottrell E, Roddy E, Foster NE. The attitudes, beliefs and behaviours of GPs regarding exercise for chronic knee pain: a systematic review. BMC Fam Pract. 2010;11(1):4.

Article  PubMed  PubMed Central  Google Scholar 

Schäfer AGM, Zalpour C, von Piekartz H, Hall TM, Paelke V. The efficacy of electronic health-supported home exercise interventions for patients with osteoarthritis of the knee: systematic review. J Med Internet Res. 2018;20(4):e152.

Article  PubMed  PubMed Central  Google Scholar 

Thiengwittayaporn S, Wattanapreechanon P, Sakon P, Peethong A, Ratisoontorn N, Charoenphandhu N, et al. Development of a mobile application to improve exercise accuracy and quality of life in knee osteoarthritis patients: a randomized controlled trial. Arch Orthop Trauma Surg. 2023;143(2):729–38.

Article  PubMed  Google Scholar 

Dicianno BE, Parmanto B, Fairman AD, Crytzer TM, Yu DX, Pramana G, et al. Perspectives on the evolution of mobile (mHealth) technologies and application to rehabilitation. Phys Ther. 2015;95(3):397–405.

Article  PubMed  Google Scholar 

Xie SH, Wang Q, Wang LQ, Wang L, Song KP, He CQ. Effect of internet-based rehabilitation programs on improvement of pain and physical function in patients with knee osteoarthritis: systematic review and meta-analysis of randomized controlled trials. J Med Internet Res. 2021;23(1):e21542.

Article  PubMed  PubMed Central  Google Scholar 

Bossen D, Veenhof C, Van Beek KE, Spreeuwenberg PM, Dekker J, De Bakker DH. Effectiveness of a web-based physical activity intervention in patients with knee and/or hip osteoarthritis: randomized controlled trial. J Med Internet Res. 2013;15(11):e257.

Article  PubMed  PubMed Central  Google Scholar 

Bossen D, Veenhof C, Dekker J, de Bakker D. The usability and preliminary effectiveness of a web-based physical activity intervention in patients with knee and/or hip osteoarthritis. BMC Med Inform Decis Mak. 2013;13:61.

Article  PubMed  PubMed Central  Google Scholar 

Eldridge SM, Lancaster GA, Campbell MJ, Thabane L, Hopewell S, Coleman CL, et al. Defining feasibility and pilot studies in preparation for randomised controlled trials: development of a conceptual framework. PLoS ONE. 2016;11(3):e0150205.

Article  PubMed  PubMed Central  Google Scholar 

Altman R, Alarcon G, Appelrouth D, Bloch D, Borenstein D, Brandt K, et al. The American College of Rheumatology criteria for the classification and reporting of osteoarthritis of the hip. Arthritis Rheum. 1991;34(5):505–14.

Article  CAS  Google Scholar 

Altman R, Asch E, Bloch D, Bole G, Borenstein D, Brandt K, et al. Development of criteria for the classification and reporting of osteoarthritis. Classification of osteoarthritis of the knee. Diagnostic and Therapeutic Criteria Committee of the American Rheumatism Association. Arthritis Rheum. 1986;29(8):1039–49.

Article  CAS  PubMed  Google Scholar 

Jordan S, Hoebel J. Health literacy of adults in Germany: Findings from the German Health Update (GEDA) study. Bundesgesundheitsblatt Gesundheitsforschung Gesundheitsschutz. 2015;58(9):942–50.

Article  PubMed  Google Scholar 

Norman CD, Skinner HA. eHEALS: the eHealth literacy scale. J Med Internet Res. 2006;8(4):e27.

Article  PubMed  PubMed Central  Google Scholar 

Richtering SS, Hyun K, Neubeck L, Coorey G, Chalmers J, Usherwood T, et al. eHealth Literacy: predictors in a population with moderate-to-high cardiovascular risk. JMIR Hum Factors. 2017;4(1):e4.

Article  PubMed  PubMed Central  Google Scholar 

Jordan PW, Thomas B, McClelland IL, Weerdmeester B. Usability evaluation in industry. 1st ed. In: Jordan PW, Thomas B, McClelland IL, Weerdmeester B, editors. London: CRC Press; 1996.

Bangor A, Kortum P, Miller J. Determining what individual SUS scores mean: adding an adjective rating scale. J Usability Stud. 2009;4(3):114–23.

Google Scholar 

Blasimann A, Dauphinee SW, Staal JB. Translation, cross-cultural adaptation, and psychometric properties of the German version of the hip disability and osteoarthritis outcome score. J Orthop Sports Phys Ther. 2014;44(12):989–97.

Article  PubMed  Google Scholar 

Kessler S, Lang S, Puhl W, Stove J. The knee injury and osteoarthritis outcome score–a multifunctional questionnaire to measure outcome in knee arthroplasty. Z Orthop Ihre Grenzgeb. 2003;141(3):277–82.

Article  CAS  PubMed  Google Scholar 

Nielsen J. Usability engineering. San Francisco: Morgan Kaufmann; 1993.

Book  Google Scholar 

Schmidt J, Lamprecht F, Wittmann WW. Satisfaction with inpatient management. Development of a questionnaire and initial validity studies. Psychother Psychosom Med Psychol. 1989;39(7):248–55.

CAS  PubMed  Google Scholar 

Poulsen E, Christensen HW, Penny JØ, Overgaard S, Vach W, Hartvigsen J. Reproducibility of range of motion and muscle strength measurements in patients with hip osteoarthritis – an inter-rater study. BMC Musculoskelet Disord. 2012;13(1):242.

Article  PubMed  PubMed Central  Google Scholar 

Feiring DC, Ellenbecker TS, Derscheid GL. Test-retest reliability of the biodex isokinetic dynamometer. J Orthop Sports Phys Ther. 1990;11(7):298–300.

Article  CAS  PubMed  Google Scholar 

Wright AA, Cook CE, Baxter GD, Dockerty JD, Abbott JH. A comparison of 3 methodological approaches to defining major clinically important improvement of 4 performance measures in patients with hip osteoarthritis. J Orthop Sports Phys Ther. 2011;41(5):319–27.

Article  PubMed  Google Scholar 

Milanese S, Gordon S, Buettner P, Flavell C, Ruston S, Coe D, et al. Reliability and concurrent validity of knee angle measurement: smart phone app versus universal goniometer used by experienced and novice clinicians. Man Ther. 2014;19(6):569–74.

Article  PubMed  Google Scholar 

Lee PH, Macfarlane DJ, Lam TH, Stewart SM. Validity of the international physical activity questionnaire short form (IPAQ-SF): a systematic review. Int J Behav Nutr Phys Act. 2011;8(1):115.

Article  PubMed  PubMed Central  Google Scholar 

Zill JM, Dwinger S, Kriston L, Rohenkohl A, Härter M, Dirmaier J. Psychometric evaluation of the German version of the patient activation measure (PAM13). BMC Public Health. 2013;13(1):1027.

Article  PubMed  PubMed Central  Google Scholar 

Kloek C, Bossen D, Spreeuwenberg P, Dekker J, de Bakker D, Veenhof C. Effectiveness of a blended physical therapist intervention in people with hip osteoarthritis, knee osteoarthritis, or both: a cluster-randomized controlled trial. Phys Ther. 2018;98(7):560–70.

Article  PubMed  PubMed Central  Google Scholar 

Veenhof C, Koke AJ, Dekker J, Oostendorp RA, Bijlsma JW, van Tulder MW, et al. Effectiveness of behavioral graded activity in patients with osteoarthritis of the hip and/or knee: a randomized clinical trial. Arthritis Rheum. 2006;55(6):925–34.

Article  PubMed