Knee Instability: Reasons, Symptoms, Evaluation, Risks, Treatment And Recovery Knee joint instability is a widely reported musculoskeletal condition where the knee feels weak. Many patients describe it as the knee slipping suddenly during daily activities or while standing up. At our advanced clinic, we frequently diagnose such cases using both https://www.diigo.com/item/note/b2kov/mge3?k=26dcbc6d3797709a887dd5a10840a527