A one-sided hip ache can make ordinary moments surprisingly difficult: stepping out of a car, walking up stairs, turning in bed, or standing after a long day at a desk. If you are asking, “why does one hip hurt,” the answer is rarely just that the hip is weak or aging. The hip works closely with the lower back, pelvis, knees, and feet, so pain on one side can reflect a local hip issue, an irritated nerve, or a movement pattern that has gradually overloaded one area.
The location, timing, and behavior of the pain offer useful clues. A careful assessment can identify what is driving the problem and create a plan that supports better movement rather than simply encouraging you to push through it.
Why does one hip hurt on only one side?
Most people do not load both sides of their body equally. You may habitually cross the same leg, lean onto one hip while standing, carry a child or bag on one side, or rotate toward one monitor at work. A previous ankle sprain, knee injury, or back episode can also change the way you walk long after the original pain settles.
Over time, these small differences can affect how the pelvis and hip share force. One side may become stiff while the other works harder to stabilize your body. This does not mean posture alone is the cause of pain, and there is no single “perfect” posture. It does mean that repeated positions, reduced movement variety, and poor load tolerance can matter when symptoms are persistent.
Pain on one side can also begin after a distinct event, such as an awkward lift, a long run, a fall, or a sudden increase in exercise. The useful question is not only what structure hurts, but what movements provoke it, what movements ease it, and whether the pattern is changing.
The pain location can point to the source
The word “hip” covers a broad area. Pinpointing where you feel pain helps narrow down possible contributors.
Pain on the outside of the hip
Pain over the bony outer side of the hip is often related to irritation of the muscles and tendons that help stabilize the pelvis, especially the gluteal muscles. It may be worse when lying on that side, climbing stairs, walking longer distances, or standing on one leg to put on pants.
This pattern is sometimes labeled bursitis, but the bursa is not always the only issue. Tendon sensitivity and reduced hip control may be involved. Rest can calm a flare-up, but long-term improvement often requires gradually restoring strength, balance, and tolerance for daily activity.
Pain in the groin or front of the hip
Pain deep in the groin or at the front of the hip can be more closely related to the hip joint itself or to the hip flexor muscles. It may show up when rising from a low chair, squatting, getting in and out of a car, or bringing the knee toward the chest.
Arthritis, joint irritation, muscle strain, and certain joint-shape conditions can all contribute. The sensation may be aching, pinching, catching, or stiff. Because several conditions can feel similar, a diagnosis should not be made from location alone.
Pain in the buttock or back of the hip
Buttock pain is commonly assumed to be a hip problem, yet the lower back and sacroiliac region are frequent sources. Tightness or discomfort after sitting, pain with bending, or symptoms that travel into the thigh or lower leg may suggest that the lumbar spine or a nerve is involved.
Sciatica is one example. It typically causes pain that travels from the lower back or buttock down one leg and may include tingling, numbness, or weakness. Not every buttock ache is sciatica, but radiating symptoms deserve a thorough examination.
Pain that reaches the thigh or knee
The nervous system does not always report pain exactly where the source lies. Hip joint problems can sometimes be felt in the thigh or knee, while spinal problems can be felt around the hip. This is why evaluating the back, pelvis, gait, and hip together is often more useful than focusing only on the painful spot.
Common reasons for one-sided hip pain
A single cause is not always present. Several factors may combine, especially for desk-based professionals who sit for long periods and then ask their body to perform during workouts, weekend activities, or family responsibilities.
Muscle or tendon overload can develop after a jump in walking, running, lifting, or sport. Hip flexors, gluteal muscles, and the muscles around the pelvis can become sensitive when demand rises faster than the body can adapt.
Hip joint osteoarthritis becomes more common with age, but symptoms vary widely. Some people have stiffness and reduced range of motion with minimal pain, while others notice groin pain and difficulty walking or putting on shoes. Age-related change does not automatically mean you should stop moving. The right type and amount of movement often remains beneficial.
Lower back dysfunction can refer pain to the hip area or alter the way one side of the body moves. Prolonged sitting, repeated bending, heavy lifting, and a history of back pain can all be relevant. If symptoms extend below the knee or include numbness, the spine and nerves need particular attention.
A leg-length difference, pelvic asymmetry, foot mechanics, or scoliosis may influence loading patterns, although these findings do not automatically explain pain. A clinician should assess how they affect your actual movement instead of treating an image or measurement in isolation.
Less commonly, one-sided hip pain may follow a fall, involve a labral injury, or be connected to inflammatory conditions. These require appropriate medical evaluation rather than guesswork.
When hip pain needs urgent medical attention
Most mechanical hip pain is not an emergency, but some symptoms should not wait for a routine appointment. Seek urgent medical care if you cannot bear weight after an injury, have obvious deformity, severe or rapidly worsening pain, a hot swollen joint, fever, or feel unwell.
Prompt medical assessment is also needed for new loss of bladder or bowel control, numbness around the groin or inner thighs, or marked and worsening leg weakness. These can be signs of significant nerve involvement.
Unexplained weight loss, pain that is constant and severe at night, a history of cancer, prolonged steroid use, or pain after a significant fall should also be discussed with a physician. A responsible musculoskeletal care plan includes recognizing when imaging, medication, specialist care, or emergency treatment is the right next step.
What a careful assessment should examine
It can be tempting to stretch the painful hip aggressively or search for a single exercise online. Sometimes that helps, but it can also aggravate a sensitive tendon, joint, or nerve. The better starting point is understanding your individual pattern.
An evidence-informed assessment should consider how you walk, stand, sit, squat, and move through the hip and lower back. It should review range of motion, strength, balance, reflexes and sensation when nerve symptoms are present, as well as your work setup, activity level, training changes, and injury history.
At Everton Chiropractic, this type of assessment is used to look beyond temporary symptom relief. If spinal alignment, joint restriction, movement compensation, or posture-related loading is contributing to the problem, care may include precise chiropractic treatment alongside guidance on mobility, strengthening, and practical changes to daily habits. If the findings suggest a condition outside chiropractic scope, referral for medical evaluation is the appropriate course.
Practical steps while you arrange an assessment
Avoid the two extremes of complete rest and forcing painful movement. If walking or exercise causes sharp pain or a worsening limp, reduce the distance, pace, or intensity temporarily. Choose movement that stays tolerable, such as shorter walks, a gentler cycling session, or simple mobility work, depending on your symptoms.
Change positions regularly if you work at a desk. Standing up and moving for a few minutes each hour is often more useful than trying to hold one rigid posture all day. When sleeping on the painful side, a pillow between the knees may reduce pressure and help keep the pelvis more comfortable. If side sleeping remains painful, try the other side or your back with support under the knees.
Pay attention to patterns for several days. Notice whether pain is worse after sitting, walking, stairs, exercise, or lying on one side. Also note any tingling, weakness, or pain traveling down the leg. These details can make an assessment more precise and help distinguish a hip-driven problem from one involving the spine.
One-sided hip pain is a signal worth listening to, particularly when it changes the way you walk, work, exercise, or sleep. With the right assessment and a plan built around your movement needs, you can work toward steadier, more comfortable activity and protect the mobility that supports your independence for years to come.