Osteoarthritis in the hip is a condition where the cartilage lining the hip joint gradually breaks down, causing bone-on-bone contact that leads to pain, stiffness, and reduced mobility. It’s the most common form of hip arthritis, and the pain typically shows up in the groin, though it can spread to the thigh, buttock, or knee. Understanding what’s actually happening inside the joint helps explain why certain treatments work and what to expect as the condition progresses.
What Happens Inside the Joint
Your hip is a ball-and-socket joint, with the rounded top of your thighbone fitting into a cup-shaped socket in your pelvis. Both surfaces are covered in smooth cartilage that lets them glide against each other. In osteoarthritis, that cartilage wears away unevenly over time. But the damage isn’t limited to cartilage alone.
The bone just beneath the cartilage, called subchondral bone, changes too. In osteoarthritic hips, this layer thickens as bone-building cells ramp up dramatically. Research comparing osteoarthritic hips to healthy ones found roughly four times as many bone-building cells in the affected joints. Despite all that extra bone production, the new bone is actually softer and more uneven in its mineral content than healthy bone. This creates a foundation that’s thicker but less mechanically sound, which may accelerate cartilage breakdown above it.
The health of the bone and the cartilage are tightly linked. As bone quality deteriorates, cartilage integrity worsens in tandem. This explains why hip osteoarthritis tends to be progressive: damage in one tissue drives damage in the other.
Where It Hurts and How It Feels
The hallmark of hip osteoarthritis is groin pain. This catches many people off guard because they expect hip problems to hurt on the outside of the hip or in the buttock. While pain can radiate to the thigh, buttock, or even the knee, the groin is the most common location. If your primary pain is on the outer hip, that’s more likely a tendon or muscle issue than the joint itself.
Early on, pain tends to flare with vigorous activity and settle with rest. You might notice it most when climbing stairs, getting out of a car, or bending to tie your shoes. Over time, stiffness becomes more noticeable, especially in the morning or after sitting for a while. The joint may feel like it doesn’t move as far as it used to, particularly when rotating your leg inward or pulling your knee toward your chest. In more advanced stages, pain can persist even at rest or wake you at night.
Who Gets It and Why
Age is the biggest risk factor, but hip osteoarthritis isn’t simply a consequence of getting older. The shape of your hip joint plays a major role. A condition called femoroacetabular impingement, where the ball or socket has a slightly abnormal shape, creates friction during movement. A study tracking middle-aged adults over 10 years found that people with this type of impingement had nearly seven times the odds of developing hip osteoarthritis compared to those with normally shaped hips. Among those with impingement, 81% developed at least some radiographic signs of osteoarthritis within a decade, and a third progressed to end-stage disease.
Other risk factors include excess body weight, previous hip injuries, family history, and jobs or sports that place repetitive heavy loads on the joint. Women develop hip osteoarthritis more often than men, with hormonal changes after menopause likely contributing.
Managing Symptoms Without Surgery
Most people with hip osteoarthritis are managed without surgery for years, and many never need an operation. The first-line approaches focus on reducing load on the joint and building strength around it.
Weight Management
Losing weight is one of the most effective things you can do for a painful hip. Every pound of body weight you lose removes roughly three to four pounds of pressure from the joint. Dropping just 10 pounds translates to about 40 pounds less force on your hip with every step. For people who are overweight, even modest weight loss can meaningfully reduce pain and slow progression.
Exercise and Physical Therapy
Strengthening the muscles around the hip, particularly the muscles on the outer hip that stabilize your pelvis when you walk, is a core part of rehabilitation. People with hip osteoarthritis consistently show weakness in these stabilizing muscles. One study found that affected individuals had roughly 40% less hip abduction strength than matched controls. That weakness changes how you walk, increasing stress on the joint.
A physical therapy program typically includes strengthening exercises (step-ups, side-lying leg raises, resistance band work), flexibility exercises to maintain range of motion, and low-impact aerobic activity like swimming, cycling, or walking. The goal isn’t to reverse the arthritis but to reduce pain and keep you moving well. Many people see significant improvement within six to eight weeks of consistent exercise.
Injections
Steroid injections into the hip joint can provide short-term relief when pain is severe. They work best in the first two to six weeks, with guidelines recommending them primarily for acute flares rather than ongoing management. A large analysis found that steroid injections had a 90% probability of reaching a meaningful level of pain relief at six weeks, but data beyond six months is limited. They’re a useful tool for getting through a rough patch or confirming that the hip joint itself is the source of your pain.
Hyaluronic acid injections, which aim to supplement the joint’s natural lubricant, are a different story. Despite their popularity, strong evidence from large trials shows that hyaluronic acid performs no better than placebo in hip osteoarthritis. The effect is essentially the same as injecting saline.
When Surgery Becomes the Right Choice
Hip replacement is typically considered when pain significantly limits daily activities like walking, sleeping, or getting dressed, and when non-surgical treatments no longer provide adequate relief. There’s no specific X-ray finding or pain score that triggers the decision. It comes down to how much the condition is affecting your quality of life.
Total hip replacement is one of the most successful operations in modern medicine. The surgeon replaces the damaged ball and socket with metal, ceramic, or plastic components. A 2025 systematic review of global joint registry data found that modern hip replacements have a survivorship rate of 93.6% at 20 years, meaning more than 9 out of 10 implants are still functioning two decades later. Predicted survivorship at 30 years remains above 92%. These numbers have improved over time as implant materials and surgical techniques have advanced.
Recovery after hip replacement typically involves walking with support within a day of surgery, progressing to a cane within a few weeks, and returning to most daily activities within three to six months. Most people report dramatic pain relief within the first few weeks. High-impact activities like running are generally discouraged to protect the implant, but swimming, cycling, golf, and hiking are realistic long-term goals for most patients.
Living With Hip Osteoarthritis Long-Term
Hip osteoarthritis is a chronic condition, but it doesn’t follow a single trajectory. Some people have mild symptoms that remain stable for years. Others progress more quickly, especially if they have structural abnormalities in the joint or carry significant extra weight. Staying active, maintaining a healthy weight, and building hip strength are the most reliable ways to slow progression and preserve function. If you do eventually need a hip replacement, the outcomes are among the best of any surgical procedure, with most people returning to the activities they enjoy.