PMCF study to observe the routine application of Ostenil® in the treatment of pain and restricted mobility in degenerative and traumatic changes of the knee joint.

Inclusion Criteria:

• Subjects ≥ 18 years of age and in good general health condition
• Signed informed consent
• Existing Ostenil® recommendation for the treatment of gonarthrosis

Exclusion Criteria:

• Known hypersensitivity to one of the Ostenil® components
• Presence of articular effusion in study-relevant knee joint
• Known pregnancy or lactating females
• Subjects not capable of contracting and of understanding the nature, risks, significance and implications of the clinical investigation and unable to form a rational intention in the light of these facts
• Subjects unable to understand informed consent or having a high probability of non compliance to the study procedures and / or non completion of the study according to investigator's judgement (e.g. illiteracy, insufficient knowledge of local language)

Patients over 18 with Gonarthrosis and a Recommendation for Treatment with Ostenil®.