Knee osteoarthritis is a serious problem of chronic joint pain and reduced mobility of the knee joint (Iwamoto et al., 2011). Osteoarthritis is also one of the most common pathologies in the elderly. In January 2007, there were 240,366 men and 417,033 women affected by the condition osteoarthritis in the Netherlands. Osteoarthritis continues to increase with age. The number of daily admissions to hospitals increased markedly in the period between 1995 and 2010, from 2,229 in 1995 to 10,172 in 2010. Osteoarthritis is almost twice as common in women than in men (National Institute for Public Health and Environmental Hygiene (RIVM, 2013) ). The risk factors for arthrosis are age, sex, obesity, osteoporosis, sporting activity, previous traumas, muscle weakness, proprioceptive defect and hereditary factors (RIVM, 2009). medial osteoarthritis a varus position for lateral knee osteoarthritis (Iwamoto et al., 2011). Osteoarthritis is defined as loss of hyaline cartilage in the joint and is likely the cause of functional loss of the knee joint. Symptoms of knee osteoarthritis are morning stiffness, joint pain, and decreased upper leg muscle strength (Alnadhi et al., 2012). In the written literature, physical therapy is an important intervention to reduce pain and improve function. Physical therapy aims to increase thigh muscle strength in order to increase ROM (range of motion) and improve knee function (Van Baar et al., 1999). Many studies have also shown that resistance training increases muscle strength and therefore also improves knee function (Lange et al., 2008...... half of the document ...... The cry for help from this patient was reducing pain and making it easier to carry out daily activities. To ensure this, the KNGF looked at the biomedical process to reduce the deterioration and progression of pain and the functional activities guideline as a starting point limitations of ADL, the KOOS questionnaire was chosen, the (VAS) was chosen. The question in this clinical case is to what extent does this man have ADL and pain improves through muscle strength training of the legs and functional exercises within 10 weeks of referring a 77-year-old man with stage 2 osteoarthritis of the knee to a general practitioner. This is according to the guidelines on hip and knee osteoarthritis and forms of exercise described in recent literature. Schilke