Hip pain: what the location tells you, what helps, and red flags
Last updated September 3, 2026.
Where your hip hurts tells you most of what is wrong, because "hip pain" is really three different problems wearing one name. Pain deep in the groin crease points to the joint itself. Pain on the bony outer point of the hip, worst when lying on that side, is usually the tendons and tissue over it. Pain in the buttock is frequently the lower back referring trouble downward. Sorting that out changes everything about treatment.
What is your location telling you?
Groin-dominant pain in someone over 45, with morning stiffness that eases within about 30 minutes and pain that builds through an active day, is the classic shape of hip osteoarthritis. Outer hip pain (greater trochanteric pain syndrome, historically called bursitis) is tender right on the bony point, hurts lying on that side, and flares with stairs, walking, and standing on one leg; it is most common in middle-aged women. True hip joint pain can also show up as knee or thigh pain, a known quirk of the joint's wiring. In young adults, groin pain with clicking and catching after sport raises the question of a labral or impingement problem.
What actually helps?
- Exercise is the treatment, not the risk: for osteoarthritis, strengthening the hip and leg muscles and regular low-impact cardio (walking, cycling, swimming) reduce pain and improve function as reliably as medication, with the best long-term evidence. For outer hip pain, targeted gluteal strengthening under a physiotherapist outperforms steroid injections at the one-year mark.
- Weight, honestly stated: every kilogram of body weight multiplies across the hip joint with each step. In people carrying extra weight, modest weight loss measurably reduces hip OA pain; it is not moralizing, it is load math.
- Short-course pain relief: ibuprofen (if safe for you) or acetaminophen helps flares and makes exercise possible. Topical NSAID gels help some people and are gentler on the stomach.
- Outer hip specifics: stop compressing the tendon: do not sleep on the sore side (put a pillow between the knees if you sleep on the other), avoid crossing your legs, avoid standing hitched on one hip, and avoid long stretches that pull the outer hip. These small changes matter as much as the exercises.
- Walking aids are not defeat: a cane in the opposite hand offloads the hip meaningfully during flares and keeps you walking, which is the goal.
When is it an emergency?
A fall followed by hip pain and an inability to bear weight is a possible hip fracture, especially in older adults or anyone with osteoporosis: that is an ambulance call, not a wait-and-see, and early surgery matters. A hip that is severely painful at rest with fever and feeling unwell can be a joint infection and is a same-day emergency. Groin or hip pain in a child or teenager always deserves prompt review, as does new hip pain with unexplained weight loss or unrelenting night pain in an adult. Pymander's escalation routing is built and tested specifically for this class of decision; see the safety architecture working paper.
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Common questions
What does hip arthritis feel like?
A deep ache in the groin crease, sometimes wrapping toward the buttock or down the thigh, in someone usually over 45. Morning stiffness that loosens within about 30 minutes, pain that builds with walking and eases with rest, and gradually shrinking range: shoes and socks get awkward first. Hip joint pain famously refers to the knee, so an unexplained aching knee with a normal knee exam deserves a hip check.
Why does my hip hurt when I lie on my side?
That pattern is the signature of greater trochanteric pain syndrome, irritation of the tendons and tissue over the bony outer point of the hip, not usually the joint itself. Body weight compresses the sore tissue directly, and lying on the opposite side lets the sore leg drop across the midline, stretching the same structures. A pillow between the knees, avoiding the sore side, and treating the tendons with targeted strengthening addresses it far better than lying there suffering.
Do I need an X-ray for hip pain?
For pain persisting beyond a few weeks despite sensible measures, an X-ray is a reasonable first test: it shows joint space and bone changes and sorts arthritis from other causes. It does not show tendons, so a normal X-ray does not rule out outer hip tendon problems, which are diagnosed by examination. MRI is reserved for unclear cases, suspected labral tears in younger patients, or when a fracture or stress fracture is suspected but the X-ray is normal.
Can back problems cause hip pain?
Yes, constantly. The lower back and the hip share nerve territory, and a pinched or irritated lumbar nerve commonly produces pain felt in the buttock, outer hip, and thigh, sometimes with tingling below the knee or down the leg. Clues pointing to the back: pain below the knee, numbness or tingling, pain with prolonged sitting or bending, and a normal hip range of motion. Both can also coexist, which is why a proper exam beats guessing from location alone.
When do you actually need a hip replacement?
When arthritis pain meaningfully limits your life (walking distance, sleep, work) despite a real trial of exercise, weight management, and medication, and the X-ray shows joint damage to match. It is a quality-of-life operation, not an emergency one, and timing is personal: the evidence supports doing it when conservative care stops holding the line, not at the first sign of arthritis and not after years of avoidable disability. Modern hip replacements commonly last 15 to 20-plus years.
What exercises help hip pain?
For osteoarthritis: strengthening for the glutes and thighs (sit-to-stands, bridges, step-ups, side-lying leg lifts) plus regular low-impact cardio like walking, cycling, or swimming. For outer hip tendon pain: a physiotherapist-guided program of slow, progressive glute loading, starting with isometric holds (pressing without moving) that calm tendon pain, and avoiding aggressive stretching of the outer hip, which compresses the tendon further. Consistency over 8 to 12 weeks is what changes the pain; sporadic effort changes little.