Greetings, sorry about the confusion. If you could have attached x ray image I will definitely help you make a wise decision. Not all arthritis needs surgery.
Next Steps
physiotherapy is the only alternative to proceed without replacement. you need to do physiotherapy for 6 months to get results, it involves trigger point therapy, massage and strength training program. see a dietitian to know what to eat to strengthen joints.
Health Tips
you have the option to stop surgery, if any other questions about the same do let me know.