Left hip pain has dozens of possible causes, but most cases come down to a handful of common culprits: arthritis, bursitis, muscle strains, labral tears, or pain referred from the lower back. Where exactly you feel the pain, and what makes it worse, narrows the list considerably. The left side specifically isn’t more prone to problems than the right. What matters more is the location of the pain (front, side, or back of the hip), how it started, and what activities trigger it.
Where You Feel It Points to the Cause
Hip pain tends to settle into one of three zones, and each zone is associated with different conditions.
Front of the hip or groin: Pain here usually involves the hip joint itself. Osteoarthritis, labral tears, hip impingement, stress fractures, and hip flexor tendon problems all produce pain in this area. If it hurts to bring your knee toward your chest or rotate your leg inward, the joint or the cartilage lining it is the likely source.
Outside of the hip: Lateral pain, especially right over the bony point you can feel on the outer hip, points toward greater trochanteric pain syndrome. This umbrella term covers bursitis (inflammation of the fluid-filled sac cushioning the bone), tears or irritation of the gluteal tendons, and friction from the thick band of tissue running down the outside of your thigh. This is one of the most common causes of hip pain overall.
Back of the hip or buttock: Pain behind the hip often originates somewhere other than the hip joint. Lower back problems, sacroiliac joint dysfunction, deep gluteal syndrome, and hamstring tendon injuries all produce pain in this region. Deep gluteal syndrome tends to feel like a burning ache deep in the buttock that gets worse with prolonged sitting, especially in a car seat, and can send shooting pain down the leg.
Osteoarthritis
Osteoarthritis is the most common joint disease and one of the most frequent reasons for persistent hip pain in adults over 50. The cartilage lining the ball-and-socket joint gradually wears down, leaving bone surfaces with less cushioning. This produces stiffness, a deep ache in the groin or front of the thigh, and reduced range of motion. You might notice it most when getting up after sitting for a while or during the first few steps of a walk.
People with hip osteoarthritis also tend to lose gluteal muscle size and strength over time, which makes the hip less stable and can accelerate the cycle of pain and limited movement. Standing X-rays of the pelvis are the standard first step for evaluating suspected osteoarthritis, since they show joint space narrowing and bone changes clearly.
Greater Trochanteric Pain Syndrome
If the pain is on the outer side of your left hip, greater trochanteric pain syndrome (GTPS) is a strong possibility. The greater trochanter is the wide, bony bump at the top of your thighbone, and the tendons and bursae surrounding it are vulnerable to irritation, especially in people who are active, have recently increased their walking or running, or sleep on the affected side.
Common symptoms include sharp pain on the outside of the hip that may evolve into a broader ache over time, difficulty walking or a noticeable limp, joint stiffness, and a catching or clicking sensation. The pain typically flares when getting out of a chair or bed, sitting for a long time, walking up stairs, or lying on that side at night. During evaluation, a provider will press on the outer hip area, move your leg in different positions, and may measure leg length, since even a small discrepancy can contribute to the problem.
Labral Tears and Hip Impingement
The labrum is a ring of tough cartilage that lines the rim of your hip socket, helping seal the joint and keep the ball of the thighbone in place. A tear in this cartilage causes pain in the groin or front of the hip, often with clicking, locking, or a feeling of the hip “giving way.” Labral tears can happen from a single injury, but they more often develop gradually from repetitive motion or from a structural issue called femoroacetabular impingement (FAI).
FAI means extra bone has formed either on the top of the thighbone (cam type) or along the rim of the hip socket (pincer type), or both. This extra bone creates abnormal contact between the two surfaces during movement, and the added pressure can gouge the cartilage lining and eventually tear the labrum. FAI is often present from a young age but may not cause symptoms until your 20s, 30s, or later, when cumulative wear catches up. On physical exam, a provider will flex your hip while rotating it inward. This specific maneuver is highly sensitive for detecting labral tears, meaning it rarely misses one when it’s present.
Muscle Strains and Overuse
Hip flexor strains are among the most common soft tissue injuries around the hip. The hip flexors, a group of muscles at the front of the hip that lift your knee, are vulnerable during activities like sprinting, kicking, or sudden changes of direction. A strain typically causes a sharp pull at the front of the hip that worsens when you try to lift your leg or bend at the waist.
Iliotibial band syndrome, where the thick tissue band running from the outer hip to the knee becomes irritated, produces pain on the lateral hip and outer knee, especially in runners. Hamstring tendon problems at the back of the hip cause deep buttock pain that worsens with activities involving forceful hip extension, like sprinting or lunging. These overuse conditions generally respond well to rest, targeted stretching, and gradual return to activity.
Pain That Starts Somewhere Else
Not all hip pain comes from the hip. The lumbar spine, particularly the lower two disc levels, can send pain into the hip and buttock that feels nearly identical to a hip joint problem. Lower back issues tend to produce pain that radiates, changes with spinal position (bending forward or arching back), and may involve tingling or numbness in the leg. True hip joint problems, by contrast, usually worsen with hip rotation and weight-bearing activity rather than changes in spinal position.
Sacroiliac joint dysfunction, where the joint connecting the base of the spine to the pelvis becomes irritated, is another common mimic. It produces pain in the low back, buttock, and sometimes the back of the thigh. Distinguishing between these overlapping sources can be tricky. In some cases, a diagnostic injection into the hip joint or the spinal area helps clarify the true source by providing temporary relief in one location but not the other.
Managing Hip Pain at Home
For mild to moderate hip pain without red-flag symptoms, over-the-counter anti-inflammatory medications can help. Ibuprofen (Advil, Motrin) can be started at 400 mg, followed by 200 to 400 mg every four hours as needed, up to four doses in 24 hours. Naproxen (Aleve) starts at 440 mg, then 220 mg every 8 to 12 hours. If you’re over 65, the maximum naproxen dose is 220 mg every 12 hours unless your doctor says otherwise. Take either medication with food to reduce the chance of stomach upset, and don’t use them for more than 10 days without medical guidance.
Beyond medication, reducing aggravating activities is the most immediate thing you can do. If lying on your left side at night triggers pain, place a pillow between your knees or switch to the other side. If prolonged sitting worsens it, stand and walk briefly every 30 minutes. Ice can help with acute inflammation, particularly in the first 48 to 72 hours of a new flare.
Strengthening the Hip for Long-Term Relief
Exercise-based rehabilitation is one of the most effective interventions for many causes of hip pain, especially osteoarthritis and greater trochanteric pain syndrome. The key muscle groups are the gluteus medius and gluteus maximus, which stabilize the pelvis and control hip movement during walking, stair climbing, and single-leg activities. Weakness in these muscles is consistently found in people with hip pain and contributes to abnormal loading of the joint.
Programs targeting hip abductors (the muscles that move your leg outward), hip extensors, hip flexors, and hip rotators have shown measurable improvements in function. However, meaningful strength and muscle size changes require at least six weeks of consistent work. Most structured programs run 6 to 16 weeks, with short-term results typically visible by 6 to 13 weeks and continued improvement out to 24 weeks or more. Early improvements in the first couple of weeks are real but reflect your nervous system learning to activate muscles more efficiently rather than the muscles themselves getting bigger.
Signs That Need Immediate Attention
Most hip pain is not an emergency, but certain symptoms warrant urgent care. Severe pain after a fall or injury, an inability to walk or bear weight, sudden intense hip pain without a known cause, numbness or tingling in the leg after trauma, a hip that appears swollen and feels hot, visible skin color changes around the hip, or hip pain accompanied by a fever all call for immediate medical evaluation. These patterns can indicate fractures, joint infections, or vascular problems that require prompt treatment.