Knee osteoarthritis affects millions worldwide, significantly impairing mobility and reducing quality of life. This study aims to develop a sensorized knee sleeve equipped with bioimpedance technology for non-invasive monitoring of knee joint health in osteoarthritis patients. A comprehensive state-of-the-art analysis identified bioimpedance as a promising indicator of knee osteoarthritis and edema, highlighting its potential to assess inflammation and fluid accumulation in joint tissues. To validate the measurement process, preliminary experiments were conducted to investigate factors influencing bioimpedance readings, like sweat and temperature and ensure reliability. Following these initial tests, we proceeded with the design and development of the knee sleeve. The device integrates a custom PCB, a rechargeable battery, and two inertial measurement units (IMUs) to evaluate the gait cycle and detect leg extension.