Why these two get confused so often
The hip joint and the lower spine sit close together, share overlapping nerve supply, and can each refer pain into the buttock, groin, and thigh. It is genuinely common for a patient to spend months in treatment for one while the other is the actual source — and not unusual for both to be contributing at once.
Imaging alone rarely settles it. Most adults past middle age have some degenerative change visible on both hip and lumbar spine films, so a radiologist's report describing arthritis in either place does not establish which one is generating your symptoms. The examination is what sorts it out.
Where hip arthritis typically hurts
The most characteristic location for hip joint arthritis is the groin, often described as a deep ache rather than a sharp pain. It commonly extends into the front of the thigh and sometimes as far as the knee — hip arthritis presenting as knee pain is a well-recognized pattern that catches patients and clinicians out.
Hip pain is usually provoked by weight-bearing and rotation: pivoting, getting out of a car, rolling over in bed. Two everyday signs point strongly at the joint itself — difficulty putting on shoes and socks because the hip will not bend and rotate far enough, and groin pain when you first stand after sitting. Stiffness after inactivity that eases as you move is also typical.
What tends to point at the spine instead
Pain that begins in the low back or buttock and travels down the back of the leg past the knee, particularly with numbness, tingling, or weakness in the foot, suggests a nerve origin in the spine rather than the hip joint. Symptoms that change with spine position — worse with prolonged standing or walking and relieved by sitting or leaning forward on a cart — fit a spinal pattern.
Pain that is present regardless of whether you are bearing weight, or that is provoked by coughing or sneezing, also points away from the joint. Notably, spine-driven leg pain often spares the groin, which is where hip arthritis concentrates.
When both are true at once
Hip and spine degeneration frequently coexist, and one can aggravate the other: a stiff, painful hip changes how you walk and stand, which loads the lower back differently. Sorting out which is dominant is a common reason for referral, and the answer sometimes determines which problem to treat first rather than which one to treat at all.
Clinicians use a combination of examination findings, the pattern of provocation, and sometimes a diagnostic injection of local anesthetic into the hip joint — if the pain substantially disappears for the duration of the anesthetic, the joint is implicated. That is a practical way to answer the question when the picture is genuinely mixed.
What to bring to an evaluation
Be prepared to describe exactly where the pain sits — point to it with one finger if you can — what movements reliably bring it on, whether it travels below the knee, whether it wakes you at night, and whether shoes and socks have become difficult. Those details do more diagnostic work than most patients realize.
This article describes typical patterns, not a way to diagnose yourself; the exceptions are common enough that examination remains necessary. If you have been treated for one of these without improvement, having the other evaluated is a reasonable next step.
Common Questions
Can hip arthritis cause lower back pain?
Yes, indirectly. A stiff or painful hip alters how you walk and stand, which can load the lower back differently and produce back symptoms. The two conditions also frequently coexist independently.
Does hip arthritis cause pain down the leg?
Hip arthritis commonly refers pain into the front of the thigh and sometimes to the knee. Pain travelling down the back of the leg below the knee, especially with numbness or tingling, more often suggests a spinal nerve origin.
Why does my knee hurt if the problem is my hip?
Referred pain from the hip joint to the knee is a well-recognized pattern, owing to shared nerve supply. It is one reason an unexplained knee complaint sometimes prompts examination of the hip.
This guide provides general educational information and is not a substitute for individualized medical advice. Treatment decisions should always be made in consultation with your surgeon based on your specific anatomy, imaging, and health history.