Unloader One Study on Knee Osteoarthritis Hässleholm Sweden

Inclusion Criteria: Patients fulfilling all criteria listed below will be considered to eligible for participation in the study: * Patient, men and women, age 30 to 70 with knee OA not scheduled for surgery who understand the given information and are willing to participate in this study. * Signed informed patient consent * BMI \< 35 * Knee pain for more than 3 month * Patients with Knee OA Ahlbäck grade 1 and 2 and/or Kellgren-Lawrence 1 and 2 * Patient with arthroscopic OA but do not have regular grade 1 OA Exclusion Criteria: Patient presenting with any of the following will not be included in the study: * prior major surgery to the same knee * patients with a history of stroke or neurological or psychiatric decease that potentially could affect the perception of pain * obesity (BMI \> 35) * active or suspected infection * patients taking opioids or steroids * patients suffering from rheumatoid arthritis or have a immunological depression * patients with other severe medical problems that could affect the perioperative course * the patient had an intraarticular steroid injection in the actual knee during the last 3 months * Patient participating in a clinical trial