Sudden severe right hip & back pain, unable to straighten up.

Sounds like a lower back problem. I’ve had pain into each hip depending on what part of my back was injured. Both hips are arthritic as well. Had my right hip replaced in Nov.22 and it’s doing great, although no replacement part is as good as the original equipment.
My suggestion and what my doctor did was a shot of cortisone into the hip. If you absolutely get no relief the pain is most likely coming from an issue in the lower back.
Bulging disc, stenosis, degenerative disc disease, etc.
Good luck, I’ve fought this fight for forty five years. Multiple surgeries, every injection available, two years of pain nerve ablations. Finally had a spinal stimulator implanted and it is a change of life. It relieved minimum 80% of my lower back pain.

@aaronhurts
Have you had a MRI of your lumbar spine and hips/pelvis? You may have slipped a disc or pinched a nerve causing your right sided symptoms. You also could have a torn gluteal tendon on the right side or inflammation in your sacroiliac joint that can be detected in a MRI. The MRI can also check how things look post hip replacement last year. You may be able to get steroid pain injections to help reduce any inflammation contributing to your pain.

Getting help is difficult. All of our orthopaedic surgeons believe themselves to be psychiatrists. They listen to you and they are not looking at your hip, they are looking at your head. ‘The X-ray looks fine… go home and suck it up. Take a pill.’ I have been offered exactly nothing. I was in bed for most of yesterday as I was in such pain. I figured out by slow movements that I can stand as long as I lean forward and to the left. Apparently I did a job on my right SI joint doing too much and leaning on a cane with my right side. Yes, I need an MRI. But try to get help OMG.

Don't count on a surgeon! Get a physiatrist or a sports medicine doctor --try various specialists till someone finds whatever is wrong. It could be bone in the spine, joint, or some kind of muscle or nerve issue. Keep trying docs till you can get an answer and, yes, insist they do an MRI. Don't let them shove you aside. Doctors don't want to take blame any more than any other person. So, you should get a new doctor who isn't worried about that and can use an open mind. Keep fighting for yourself and good luck.

I fell and had my right hip fully replaced in 2019. Along with the fall, I had fractured my Before that I had issues with my lower back, piriformis and a few other, lumbar mostly, issues.

December 2023 I was accepted into the Mayo pain clinic. I first had trigger point injections across the lumbar region that helped. However the deeper pain that doubled me over when I got up in the morning and made breakfast, when I walked more than 10-15 mimutes, etc. were still present. I had had years of injections however at this point, that did not seem like the right course.

Mayo orderd an MRI and did two tests of a block in my back. I had relief for much longer each day--the drug wore off in 6 hours or so. Insurance approved radio frequency ablation (RFA) and I had that June 2024. I had two severe bouts of pain two weeks later and then all good until July this year. I had back to the Pain Clinic the end of this month.

Agree with all who said to get diagnosed first. And keep after it!

I feel your pain, literally. My right hip was replaced 6-months ago, and all is good on that side. Now my SI joint on the left side is complaining loudly. I had 6 weeks of PT for lower back pain, and was satisfied with the result, except that I couldn't walk upright, particularly up even a slight uphill grade. I'm hopeful that it's my right hip with transferred pain to my back. Headed back to the surgeon next week for evaluation. 74 YO male who likes to stay active.

All the best. My husband has leg pain when he turns it a certain way--going to be checked this Friday. He's had both knees replaced, one a second time. Not his first time with leg pain. Glad we have this forum

Best of luck with your health quest!