Unstable Knee Condition: Reasons, Signs, Diagnosis, Risks, Management And Rehabilitation Instability of the knee joint is a widely reported orthopedic problem where the knee feels loose. Many patients describe it as the knee losing balance during walking or while standing up. At our orthopedic center, we commonly manage such cases https://www.tumblr.com/healpedia/814953828304699392/knee-joint-instability-causes-symptoms?source=share