The affected knee can be treated in different ways which are non-surgical in nature. Some approaches that work well include-

• Physiotherapy – A certified physiotherapist will take you through a set of specific exercises and will teach you modified exercises which can help reduce strain on your joint. These can be regarded as a tool to improve mobility, range of motion and help you with pain management too.
• Pain medications – Specific NSAIDs , opioids, muscle relaxants and related medication may be prescribed as needed to help you manage your symptoms.  But, these cannot be a long term solution as they can be harmful to the stomach and gut, so talk to your doctor for more information and to opt for a more feasible solution in the long term. 
• Intra-articular injections for the knee – Corticosteroids, hyaluronic acid or other supplements are directly injected into the knee joint to help with pain management. This method also reduces the need for oral pain medication and improves joint function markedly. 
• Ablation of the Genicular Nerve – Radiofrequency waves are used to ablate or destroy the sensory nerves present in the knee. It is done with imaging, to locate the nerve accurately. This method is normally used if you have chronic pain even after getting a knee replacement surgery at times.