In the scope of the Master Thesis “Classification of knee arthropathy with accelerometer-based vibroarthrography” (KneeGraphy), researchers are studying the knees of people with knee osteo-arthropathy, which is a condition that affects many seniors. In order to do so, researchers are developing an accelerometer-based system for knee data acquisition and data feature extraction for the differentiation between a pathological and a non-pathological knee. Several tests were conducted with seniors diagnosed with knee osteo-arthropathy and other volunteers for the control group.