The clearest sign you may need a hip replacement is hip pain that persists despite months of non-surgical treatment and limits your ability to do everyday activities like walking, climbing stairs, or sleeping through the night. No single symptom triggers the decision. It’s the combination of worsening pain, loss of function, and failure of other treatments that moves the conversation toward surgery.
Pain Patterns That Signal Advanced Hip Damage
Hip arthritis pain typically centers in the groin, not the outer hip where many people expect it. It often radiates into the thigh, buttocks, or even the knee, which leads some people to assume they have a knee problem when the hip is actually the source. Early on, you might only feel it during or after activity. As the joint deteriorates further, pain starts showing up at rest and waking you at night.
Morning stiffness is another hallmark. Your hip feels locked up when you first get out of bed or after sitting for a while, and it takes several minutes of movement before the joint loosens. Over time, you may notice you can’t put on shoes or socks without difficulty, can’t get in and out of a car comfortably, or have started limping. These aren’t just inconveniences. They reflect real structural changes inside the joint, where protective cartilage has worn thin enough that bone is grinding against bone.
What Needs to Happen Before Surgery Is on the Table
Hip replacement is not a first-line treatment. Surgeons typically expect you to have tried at least three months of conservative management before considering surgery. That usually includes a combination of anti-inflammatory medications (oral or topical), physical therapy or structured exercise for 12 weeks or more, activity modifications, and possibly a corticosteroid injection into the joint.
The key word is “failed.” If these approaches reduce your pain enough to maintain your quality of life, surgery can wait. The threshold for recommending a hip replacement is intractable pain, meaning pain that hasn’t responded adequately to non-surgical options, combined with significant functional impairment.
There is one exception to the conservative-treatment-first rule: if imaging already shows bone-on-bone contact in the joint, meaning the cartilage is essentially gone, a trial of physical therapy is not required before proceeding to surgery. At that point, there’s no cushion left to preserve, and the structural damage is driving the symptoms.
What Imaging Reveals About Your Joint
Your doctor will order X-rays to see how much cartilage remains. The critical measurement is the joint space width, which is the gap between the ball of the femur and the hip socket on an X-ray. In a healthy hip, that space is filled with cartilage. When it narrows below about 2 millimeters, that’s the radiographic definition of osteoarthritis. In severe cases, the space drops to around 1 millimeter or less, and the bones show visible deformity, cysts, and hardening at the surfaces.
Doctors grade the severity on a scale from mild to severe. Mild arthritis shows some narrowing and small bone spurs. Severe arthritis shows near-total loss of joint space, significant bone spurs, cyst formation, and changes to the shape of the femoral head and socket. Surgery is generally considered for moderate-to-severe grades, particularly when the imaging findings match your level of pain and disability. An X-ray alone doesn’t determine whether you need a replacement. Plenty of people have arthritic-looking hips on imaging but manageable symptoms, and vice versa.
Age and Candidacy
Hip replacement is most commonly performed in people over 70, but age alone doesn’t determine whether you’re a candidate. Younger patients do receive hip replacements when the pain and joint damage justify it. In a large French study tracking over one million hip replacements, about 0.4% were performed in patients aged 30 or younger. The surgery works in younger people, but their higher activity levels and longer remaining lifespan mean the artificial joint faces more wear over time. Reintervention rates were higher in the younger group (8.4% versus 6.3% for the general population), with loosening of the implant being the most common reason for a second procedure.
If you’re younger, your surgeon will likely discuss the realistic expectation that you may need a revision surgery at some point during your lifetime. That doesn’t mean the surgery isn’t worth it. It means the decision involves weighing years of pain relief and restored function against the possibility of a more complex second procedure down the road.
If You’ve Had a Steroid Injection
Corticosteroid injections into the hip joint are a common step in conservative treatment, and they can provide meaningful short-term relief. But if you eventually decide to proceed with a hip replacement, the timing between your last injection and surgery matters. Research shows that having a hip replacement within three months of a steroid injection nearly doubles the risk of post-surgical infection. That elevated risk was not seen when surgery was performed more than three months after the injection. If you’re considering both options, spacing them appropriately is important.
Health Factors That Affect Your Candidacy
Most people with severe hip arthritis are candidates for surgery, but certain health conditions can complicate things. Uncontrolled heart disease, unmanaged sleep apnea, or other significant medical conditions may need to be addressed before you can safely undergo the procedure. Surgeons evaluate your overall health to ensure you can tolerate anesthesia and recover well. Being motivated and having support at home during recovery also factors into the decision, particularly if outpatient surgery is being considered.
Obesity can increase surgical risks and may affect implant longevity, so some programs set BMI thresholds. If you’ve been told your weight is a barrier, that conversation is worth having in detail with your surgeon, since the threshold varies by institution and your individual risk profile.
What to Realistically Expect Afterward
Hip replacement has a strong track record for pain relief, but it’s not guaranteed to eliminate all discomfort. In the highest-quality studies, about 9% of patients reported an unfavorable pain outcome after hip replacement, meaning they still experienced moderate-to-severe pain or felt the surgery hadn’t relieved their symptoms. That means roughly 9 out of 10 patients achieve significant improvement, with most reporting no pain or only mild pain at follow-up.
Function also improves substantially for most people, though research consistently shows that patients’ perceived improvement tends to be somewhat more modest than what clinical measurements suggest. The practical takeaway: most people return to walking without a limp, sleeping without pain, and performing daily activities they had given up. But expecting a completely “new” hip that feels like it did at 25 may set you up for disappointment.
Signs It May Be Time
There’s no single test that tells you definitively it’s time. But if you recognize yourself in several of these scenarios, the conversation with an orthopedic surgeon is worth having:
- Pain is controlling your decisions. You’ve stopped doing things you enjoy, changed how you walk, or rearranged your life around avoiding hip pain.
- Sleep is disrupted. Hip pain wakes you up or prevents you from finding a comfortable position.
- Conservative treatments have stopped working. Medications, physical therapy, and injections no longer provide meaningful relief, or the relief doesn’t last.
- Stiffness limits basic tasks. Tying shoes, getting dressed, or standing up from a chair has become a struggle.
- You’re relying on a walking aid. Using a cane or walker because of hip pain, not just for balance, suggests the joint has deteriorated significantly.
The decision is ultimately a quality-of-life calculation. Surgery carries real risks and a recovery period of several weeks to months. But for people with advanced arthritis who have exhausted other options, hip replacement remains one of the most reliably successful operations in modern medicine.