Your concern is valid on having additional procedures. Orthos are put in a tough spot they need to resolve the patients pain so after exhausting the protocol, surgery becomes the last resort.
I would suggest to find an ortho with extensive knowledge of soft tissue around the hip. I have an issue similar yours and my OS only X-rays and uses MRIs, all looked good. The chronic pain and weakness continued. I went to a local ortho, he is a sports medicine ortho that's specializes in soft tissue injuries. He did a complete sonogram of my hip and found a disruption in the glute medius tendon. He injected it with cortisone and I just started basic balance excersises on the wobble board. After two days I was surprised my lateral hip pain reduced and my psoas pain as well. It felt like my hip was trying to function as it should.
I believe my glute medius muscle was completely shut down. This caused an overactive pattern in all my other muscles, adductors, hamstrings and hip flexor. Once it started firing my balance started improving as well. Also, the glute medius is a difficult muscle to gauge for strength.
I was surprised how much disfunction these muscles can cause when not working properly. Replacing the joint is just one piece of the puzzle. Hope this helps.
Larry